
                          DS 2245M
                      Soft Modem w/MNP

-------------
-Bell 212A/103  CCITT V.22bis/V.22/V.21
- 㯫᭠   2400,1200  300 /ᥪ
-ᦠ⨥ MNP-5 訡 ४/
-᢮  訡 ।  㬫 
- 200% ७ ய᪭ ᯮᮡ  ᦠ 
-᪮⭠   ࠢ ⮪ ଠ樨
-᪮ DTE   9600 /ᥪ
-⨬騩  -
-⮬᪨ 맮 
-९ணࠬ Dallas Semiconductors and Softeners
-஢  ஢ DTMF ⮭ 뫮
-० ⮮⢥  ⠭ ᮥ
-ࠫ ᮥ 䥩    㣨 設
-⠭  +5 
-  ⠭ ॡ  400 
-।쭮  樥 (-䠪)
-뢮 ᮢ⨬  DS2245
-30-뢮 SIMM 奬 ᮥ


---------
DS2245 SofT Modem with MNP  ⥬ । , -
  2400/1200/300 ,  ᮥ  DSD2245 DAA.஥ 
DS2245M ᯮᮡ  ४樨 訡  ᦠ   ᯮ짮 ஢
5 MNP.  DS2245M  ॣ  ⤠   浪
। 襣 ஢ ⮪, ন .
DS2245M ন V.22bis ,V.22/V.21  Bell 212A/103 ⠭.⥫-
  ࠡ-⠭   MNP-5, (Soft Modem)  -
஢ 室騥 ⮭ 뫪 DTMF.  ᭮ ⥬ ਭ-
   ⤠ 㭪,  .DS2245M ⨬-
  ஥ ਬ,஥ ॡ  裡   
ॡ   . ० Teleservicing  業ࠫ-
 㭪   ⤠ ⥬  ஢ ,।஢ 
१㧪 ᮤন  ணࠬ/ ⮩ ⥬.DS2245M ⠪
ᯮᮡ 樠஢ 맮 , ᯮ Dallas Semiconductor
and Softeners  १㦠    ⥫䮭.

 
Ŀ   
    1    .2             11    D1                 21      AIN      
    2    CP.1             12    VCC                22      NC       
    3    OH               13    D0                 23      A2       
    4    RI               14    GND                24      A1       
    5    SPEN             15    CS                 25      A0       
    6    CP.3             16    D7                 26      OUT1     
    7    CP.0             17    D6                 27      UR       
    8    D4               18    WR                 28      AOUT     
    9    D3               19    D5                 29      INT      
   10    D2               20    RD                 30      PROG     


                                                 ⠡ 1
                   
------------------------------------------------------------------------------
 #      /    
          
------------------------------------------------------------------------------
    1      .2     /    .0-3  - 㭪樮 뢮 ࠢ 
                           DS2245M. ᨬ  ०, ᯮ ࠧ-
                            㭪樨.(.2 筮 ᯮ  ࠢ-
                            ஢ ஬ 譥 ,⠫쭮
                           .⠡.10)
    2      .1     뢮  .1 ᯥ稢  㭪   -
                           䫨. ᯮ  ᨣ 㧪  ०-
                            Teleservicing.  ⨢஢, ᨣ
                           ᯮ  ⨢樨 ᠬ㧪  uC.
    3             뢮   㡪.ᯮ  ࠢ ५
                           ꥬ 㡪 DAA.
    4      RI           . ஢  ⮬ 뢮 -
                           뢠,  ⥫䮭  
                           楢 ᨣ. ᨣ   DS2249
                           DAA.
    5      SPEN        ࠧ஢ .⠭  ⮬ 뢮 -
                           ᮪ ஢ ࠧ .2  .3  ࠢ-

                                2
                            ஬.
    6      .3     /     ᨬ  ०,.3 㦨 ࠧ
                           㭪..3 筮 ᯮ  ࠢ
                           ஢ ஬ 譥 . ,
                           樠 맮 ,᫨  
                            ஢   楯.
    7      .0     /    .0   㭪樨  ⭮襭  ࠢ
                           . 砥 㬮砭,  ᯮ-
                             뢮 ᨣ HOLD/PASS  ࠢ
                           䨪樥.    2  ࠭ -
                            祭 ࠢ ஢ ஬ -
                           .᫨ .0 㦠   ஢ -
                           ( 짮⥫), ⨢ ୠ⨢
                           奬 ࠢ ஬. ० 易 
                           DS2249PH DAA , ஥   ࠢ-
                            .
     8     D4       /    㭠ࠢ  4 設 
     9     D3       /    㭠ࠢ  3 設 
    10     D2       /    㭠ࠢ  2 設 
    11     D1       /    㭠ࠢ  1 設 
    12     VCC         ⠭ +5 
    13     D0       /    㭠ࠢ  0 設 
    14     GND         
    15     CS          롮 稯(奬) .७  ࠧ-
                             D0-7, CS 室   ஢.D0-7
                           ⠥   -ﭨ , CS 室
                            ᮪ ஢.
    16     D7       /    㭠ࠢ  7 設 
    17     D6       /    㭠ࠢ  6 設 
    18     WR          ஡ .ࠫ   D0-7 뢠-
                             ७ UART DS2245M,  뢮 -
                              ஢  CS ⨢. 䨪-
                             । ஭ WR.
    19     D5       /    㭠ࠢ  5 設 
    20     RD          ஡ ⥭. ஢ 室  ⮬ 뢮
                           ਢ  ⮬, ᮤন ७ UART -
                             D0-7, ⨢ CS.
    21     AIN          .  ਥ 
                           DS2245M. 뢮 易   뢮
                           DS2249 DAA.
    22                                  
    23     A2          㥬  2.   㥬  ⮢ 
                           㯠  ७ UART.
    24     A1          㥬  1.-/-
    25     0          㥬  0.-/-
    26     OUT1     뢮  UART OUT1 .室   ஢,  2
                           ॣ ࠢ (MCR)⠭  1.-
                            饣 祭.   ᮥ  PROG
                            祭  ஥   
                           樠樨  ᭮ .
    27     UR           UART.᮪ ஢  ⮬ 뢮 -
                            ॣ UART    ⠡ 5.
    28     AOUT     뢮   뢮.  뢮 
                           ।.筮   AIN ਥ DS2249.
    29     INT      뢮  뢮 뢠.뢠 ⨢ ᮪ ஢-
                           ,   প ᮡ ७
                           뢠. ᨣ ⠭,᫨ 뢠
                            ࠧ஢  MCR.3.
    30     PROG        ࠧ஢ ணࠬ.DS2245  ਭ -
                            ஥  ,  뢮 室 
                            ஢. ⠪   ᮬ
                            ஫   .
--------------------------------------------------------------------------------

 
----------------
DS2245M ࠢ ஬ ⠭⨧஢ ,   --
.  訢 ᭮ ஬ १ ࠫ 䥩
設. ࠫ 䥩    ஥ UART ன⢮.
  , ᪮쪮 蠣,易  樠樥 ॣ஢ UART,
 ॡ । 뤠祩 . 蠣  ᫥⥫쭮
樠樨 祭 ⠭ , 믮 ᭮ ஬.-
 ਢ  ⠡ 2  ⠫쭮 ᬮ७  ⠡ 3.砫,
 樠஢ ॣ ࠢ (Line Control register). 樠-
  롮  ᫮   ⭮. 饬 ⠪ ⠭-
   ६ ᠬ 訩  ॣ ࠢ ப.⠭ ⮣
     ᪮   ,ࠧ ॣࠬ 䨪-

                                   3
樨 ⥫ (Divisor Latch registers)  ஬ 蠣.祭 䨪樨 -
⥫  ࠭ ᪮⥩   ਢ  ⠡ .ਬ,-
祭 䨪樨 ⥫ 96 ᮮ⢥   1200 /ᥪ.᫥ ⠭-
 䨪樨 ⥫, ᠬ 訩  ॣ ࠢ  㤥 -
饭.⥬,樠 ॣ ࠢ (Modem Control Register).
 筮 뢠 ⠭ DTR  RTS  ⨢ ﭨ  ࠧ஢
뢠,᫨  室.᫨ ᯮ 뢠,⮣ ॣ ࠧ-
஢ 뢠 (Interrupt Enable register) 樠 ᮣ᭮
ॡ㥬 .᫨ 뢠 ஢  ॣ ࠢ -
, 뢮 INT( 29)㤥 室   -ﭨ. 
६, ⮢ ਭ ASCII -.
 ,   ,⪫,   , ஢ १ UART-
 000.  祩 ॣ  ਥ (Receive Buffer register)
 ॣ ஢ ।(Transmit Buffer register).஡ ⥭  -
 ।,   ॣ஢ 㯥. । ਥ
ASCII AT . ᯮ  㣨 ᨬ,  ᯥ祭  -
.᫥  , ⢮   ᪮쪮  㪢,
 ᫥騬 ⮬ ⪨. ᯮ    ⮬ 浪, -
  ਭ.ᯮ ⠪ ந室  ASCII  ந室 ᫥
 ⪨  ॢ ப.(   㧠 ਬ୮  750 
  ⤥묨 묨 ப.᫨ ॡ (ATZ), ਭ-
 㧠 ਬ୮  2 ᥪ.)

 
----------------
DS2245M ন ⠭ V.22bis CCITT   2400 /ᥪ.⮪
V.22 । CCITT 1200 /ᥪ.⠭ Bell 212A  US V.21  Bell 103
  300 /ᥪ. ᪮ । ᮣᮢ
⮢  㤥  ᨬ쭮 ন. CCITT/Bell -
 ⢥騬 .  । ᯮ  Bell 
CCITT  ⢥  1200  300 /ᥪ. 樠 UART,롨-
ࠥ ᫥⥫ ଠ .ଠ , ন
DS2245M , 7  8     ⮢ . ⢮
஢ઠ   ,   .  ࠭    ⮯-
 .⠭묨 䨣ﬨ  :7S1,7M1,7E1,7O1,8N1.

   UART.
---------------------------------
 ஢  DS2245M १ ࠫ 䥩 UART.UART 㯥
8-⮢ 設  ६ 묨 ﬨ. UART ࠢ ଠ⮬
  뢠ﬨ,뢠  , ய᪠   
 ஫ . 2 뢠  ॣ UART.  -
樠 ,᪮   । १ ॣ 䨪樨 ⥫
(Divisor Latch registers),   㯭  ࢮ ⠭ -
 襣  ॣ ࠢ (Line Control register)( DLAB).

                                 ⠡ 2
                              UART
Ŀ
   DLAB *  A2  A1  A0     ॣ                                     
Ĵ
     0     0   0   0      ॣ  ਥ                       
                          (Receive Buffer register)                   
                          ॣ ஢ ।                 
                          (Transmit Holding register)                 
     0     0   0   1      ࠧ஢ 뢠                    
                          (Interrupt Enable)                          
     X     0   1   0      䨪 뢠                    
                          (Interrupt Identification)                  
     X     0   1   1      ࠢ                            
                          (Line Control)                              
     X     1   0   0      ࠢ                           
                          (Modem Control)                             
     X     1   0   1                                       
                          (Line Status)                               
     X     1   1   0                                      
                          (Modem Status)                              
     X     1   1   1      ᢥ宯⨢                      
                          (Scratchpad)                                
     1     0   0   0      ᠬ 訩  䨪樨 ⥫         
                          (Divisor Latch lsb)                         
     1     0   0   1      ᠬ 訩  䨪樨 ⥫         
                          (Divisor Latch msb)                         

* DLAB  ⮬ 7  ॣ ࠢ 

                                   4
                                           ⠡  3
             UART

ॣ  ਥ/䨪樨 ।                  000

  ᯮ  ய᪠      ஫ 
 ਥ   ⪫  ஫ . 䨣஢ UART,
  묨 ஢ १  ॣ.

ॣ ࠧ஢ 뢠(IER)                    001

ந室 ᨬ ࠧ஢  ࠧ 筨 뢠.
 筨 뢠 ࠧ஢, ᯮ  뢮 IMT   -
 IIR. INT ⢥ত,   ࠧ஢ 뢠 -
 ⨢. IER -ॣ ⥭/.

  IER.0   ᮪ ஢ ࠧ஢ ⢨ 뢠 ਭ
          
  IER.1   ᮪ ஢ ࠧ஢ 뢠 ⮣ ॣ 䨪樨
          ।
  IER.2   ᮪ ஢ ࠧ஢ 뢠   ਥ
  IER.3   ᮪ ஢ ࠧ஢ 뢠  
  IER.4-7  ஢ 


ॣ 䨪樨 뢠 (IIR)                   010

ᯥ稢  ᫮ ७ 뢠. CS 室  -
 ஢, ॣ 묮ࠦ ﭨ 뢠 襣 ਮ-
.᫥⥫ 뢠 , 㦨  -
.ਮ 㪠  ⠡ 4.IIR -ॣ ⮫쪮 ⥭.

  IIR.0   প 뢠.  頥  0,  뢠 -
          .  室  ᮪ ஢,  ন -
           뢠.
  IIR.1-2 䨪 (ID)뢠.    樨 -
          筨 뢠,஥  訬. 4 뢠
          ਮ  ஢.
  IIR.3-7  㫨.

                                                 ⠡ 4
                                   
͸
 IIR IIR IIR  ਮ-     ⨯    筨                         
 D2  D1  D0                                                     
͵
 0   0   1     N/A                             N/A             
ĵ
 1   1   0   訩   訡 ९   ⥭          
                          訡 ⭮       LSR             
                       ਥ-  訡 ନ஢                   
                           ࠧ 뢠                     
Ĵ
 1   0   0   ன    - ⢨     ਥ RD     
                       ⢨   ਥ                ॣ   
                                                               
                       ਥ                                        
Ĵ
 0   1   0   ⨩    ⪠ ⪠ ॣ      ⥭ IIR      
                       ॣ- 䨪樨 ।      । 
                        -                                       
                       ஢                                       
                       ।稳                                      
Ĵ
 0   0   0   ⢥   ⪠ 뫪      ⥭ ॣ  
                         ⮢ -         
                                                          
                               楢 -                       
                                                                
                               ⥫ -                       
                               樨                                 


ॣ ࠢ (LCR)                            011

। ଠ ᫥⥫쭮 ᨭ஭  묨.LCR 
ॣ஬ ⥭/.

                            5

LCR.0-1  ᫮. D0  D1 롨 ଠ .ন ⮫쪮
        7  8 .

        LCR.0   LCR.1
         1       0      7 
         1       1      8 

LCR.2   ⢮  ⮯-.᫨  2 ⠭  ᪨ 0,⮣ -
         1 ⮯-.᫨  2 ⠭   1,  2
        ⮯-.

LCR.3   ࠧ஢ ⭮. ⠭   1,  ⭮-
           ஫.

LCR.4   롮 ⭮ ⭮(even parity).᪨ 0  LCR.4 ஫
        ,᪠ 1 ஫ .

LCR.5   ⭮ .᫨ ⭮ ࠧ஢,⠭ ⮣  ਢ-
         DS2245  ⠭  ⭮ ᭮   LCR.4

LCR.6   뢠 ⠭.   ⠭   1, UART
        ਭ㦤  ⠭ ᪮ 0  뢮. த  -
        ,  LCR.6  .

LCR.7    㯠 䨪樨 ⥫(DLAB). DLAB   ⠭  -
         1  㯠  ॣࠬ 䨪樨 ⥫  ᪮-
          .  室  ᪮ 0  㯠  ॣࠬ
        ਥ/।  ࠧ஢ 뢠.

ॣ ࠢ (MCR)                            100

ࠢ 䥩ᮬ  ७ UART   DS2245M.MCR 
ॣ஬ ⥭/.

MCR.0   ⮢ ନ (DTR). MCR.0 ⠭   1,
        ᪨ 뢮 DTR 室  ᪮ 0, ⨢.
        MCR.0 室  ᪮ 0, DTR 室  ᪮ 1,
        ⨢.

MCR.1    뫪 (RTS). MCR.1 ⠭   1,-
         뢮 RTS ⠭  ᪨ 0, ⨢ . MCR.1
        ⠭  ᪨ 0, RTS ⠭   1,  -
        ⨢.

MCR.2   OUT1. SR.2 ⠭   1,᪨ 뢮 OUT1
        ⠭  ᪨ 0, ⨢. MSR.2 ⠭ 
        ᪨ 0,OUT1 ⠭   1 , ⨢.

MCR.3   INT . SR.3 ⠭   1,᪨ 뢮 INT
        ⠭  ᪨ 0, ⨢. MSR.3 ⠭ 
        ᪨ 0,INT ⠭   1 , ⨢.

MCR.4   LOOP. MCR.4 ࠧ ᪮ 殢뢠  -
         ஢ 㭪樨 UART. MCR.4 ⠭, UART-᫥-
        ⥫ 뢮 ⠭   1,ᮥ ᫥⥫
         ਥ, ॣ ᤢ । 殢  ॣ ᤢ
        ਥ,   ࠢ  祭   뢮
        ࠢ .

MCR.5-7  㫨.


ॣ  (LSR)                               101

뢠 ଠ, ७   設  UART,  UART
 .LSR 㦨 ⮫쪮  ⥭.

LSR.0   ⮢ .  ⠭ , ਭ  ᨬ 
        ७ᥭ  ॣ  ਥ. LSR.0 頥  ⥭ 
        ਥ.

LSR.1   訡 १᪠.뢠, ᨬ   ਥ  ⠥
         ⮣, ᫥騩 ᨬ  ।  .  頥,
         ⠥ LSR.

                                6
LSR.2   訡 ⭮. ⠭  ,ᨬ    ୮ -
        . 뢠,  ⠥ LSR.

LSR.3   訡 ନ஢.뢠, ਭ ᨬ   ୮
        ⮯-.

LSR.4   뢠 ࠧ뢠.뢠, ࠧ ਭ. ⠢-
          䨪樨 ਭ   ﭨ ᪮ 0  -
         ᫮  (砫++⮯).  頥 , -
         LSR.

LSR.5   ⪠ ॣ 䨪樨 ।.  ⠭, ᨬ -
        ।  ॣ 䨪樨 ।  ॣ ᤢ ਥ. -
        뢠 , UART ⮢ ਭ 㣮 ᨬ.  頥,
        㦠 ᨬ  ॣ 䨪樨 ।.

LSR.6   ⪠ ।.뢠,  ॣ 䨪樨 ।  ॣ
        ᤢ ਥ 饭.LSR.6 頥  ⠪  ਭ ᨬ.

LSR.7   ᥣ 0.


 ॣ  (MSR)                            110

뢠 ⥪饥 ﭨ ᨣ ࠢ . ଠ樨
⠪ 뢠    .

MSR.0   ⪠ 訡  뫪(DCTS).뢠, CTS  -
         ᫥ ᫥ ⥭ MSR

MSR.1   ⮢ ⠭ 訡 (DDSR).뢠, DSR 
        ﭨ ᫥ ᫥ ⥭ MSR

MSR.2    ஭ 楢 (TERI).뢠, RI -
          ᪮ 0  ᪮ 1.

MSR.3   ⥪஢ 饩 訡  (DDCD).뢠, DCD -
         ﭨ ᫥ ᫥  MSR.

MSR.4    뫪(CTS).  ᨣ CTS.  室 
        ᮪ ஢, CTS  ⨢ (᪨ 0).

MSR.5   ⮢ ⠭ (DSR). ᨣ DSR.

MSR.6    (RI). ᨣ  RI.

MSR.7   ⥪஢ 饩 (DCD). ᨣ DCD.


䨪 ⥫.              000-001       DLAB=1

  ⮢ ॣ ࠢ ᪮     ⥫.
  㯥 ⮫쪮   DLAB ⠭  LCR. ⥫
 ॣ஬ ⮫쪮  .

   Ŀ
     ᪮            祭 䨪樨 ⥫
     """"""""""""""""""        """"""""""""""""""""""""" 
   Ĵ
         50                      2304                    
         75                       536                    
        110                      1047                    
        150                       768                    
        300                       384                    
       1200                        96                    
       2400                        48                    
       9600                        12                    
      19200                         6                    
   
 
-----------------
DS2245M ন   ୠ⨢  ஫ . ୠ⨢ -
 뢮 CP.2  CP.3  ࠢ ஢ ஬  ﭨ -
祭/몫祭.  ,DS2245M   ᨣ ࠢ 
ࠧ묨 ﬨ. ୠ⨢ ᮢ⨬   묨 ﬨ NO
TAG,࠭ ᮢ⨬. ୠ⨢  ᮢ⨬ 
DS2249PH Phantom DAA  ஥ ன ࠢ ஬.᫨ ਪ-

                                   7
 楯 砥  ࠢ ஬,⠪    2, 
ॡ ⥫ ⢨. ⮬ 砥 ᨣ 䨪/宦 
뢮 7  ᯮ짮  ࠢ 䨪樥  ࠢ -
. 堭 ࠢ ஬  㬠稢 ᫮.᫨ -
 ᯮ DS2249PH Phantom DAA,⮣  ॡ ⥫쭮 -
  ࠢ ஬(᪫ ࠩ ). ⮬ 砥,ᨣ
䨪/宦  짮⥫  .  ⠭ ,
DS2245M । , ० ॡ   ⮣ 뢮.᫨  -
 騬(७ 㧪),⮣ ᮢ⨬  DS2245M ࠢ -
஬ ࠨ ( 㬮砭).᫨ 뢮 䨪/宦 㦠
 㬥襭,⮣ 㤥 ஥ ᮢ⨬  DS2245M ࠢ ஬ .
 ୠ⨢ 㪠   1   2.樨 뢮  ࠢ
  ⠡ 6.

                                        ⠡ 5
                         UART
Ŀ
 ॣ/ᨣ                    ࠢ    ﭨ          
                                    ᮬ                               
Ĵ
 ॣ ࠧ஢ 뢠       UR        㫨                 
 ॣ ID 뢠                  -/-      0 ᮪ ஢     
                                                ⠫ -         
 ॣ ࠢ               -/-      㫨                  
 ॣ ࠢ              -/-      㫨                  
 ॣ                    -/-      5  6-᮪ ஢
                                                ⠫-          
 ॣ                   -/-      0-3 - ஢, 
                                                ⠫ - ᮪       
 INTERRUPT(訡 RCVR)              ⥭      ஢            
                                     LSR/UR                               
 INTERRUPT(⮢  RCVR)   ⥭      ஢            
                                     RBR/UR                               
                                                                    
                                     THR/UR                               
 INTERRUPT(THRE)                     ⥭      ஢            
                                     IIR/                                 
 INTERRUPT(  )           ⥭      ஢            
                                     MSR/UR                               
 OUT1                                 UR        ᮪ ஢           
 RTS                                  -/-          -/-                    
 DTR                                  -/-          -/-                    



                                             ⠡ 6
               
Ŀ
          .2(1)  .3(6)        .0(7)                            
Ĵ
   L0/1       0       0         뢮 ࠢ 䨪樥             
   L2         0       1              -/-                               
   L3         1       0              -/-                               
   M0         1       1              -/-                               

 ᯮ DS2249PH ᮢ⨬ ࠢ ஬,
ࠢ ࠡ ᫥騬 ࠧ:
Ŀ
         -/-        -/-            -/-                               
Ĵ
   L0/1      0         1          㧪  ஢       
   L2        1         0             -/-                               
   L3        0         0             -/-                               
   M0        1         1             -/-                               


                        1    2

    
---------------------------------
DS2245M ॠ MNP ஢ 5 ४樨 訡  ᦠ . ⤠-
  ⠪ ॠ  ⮪,᮪    
।  ⨢஢ ᮪䥪⨢ ந⥫쭮. 200% ᮢ-
襭⢮   筮 ।    400% -
⥫ । ᫮.-  ⮯- ᪠ , ᯮ-
 訥 ஢ MNP, ࠭ ந⢥ 室 ᪮
. 浪 뫪 ᢮  訡 , ⨧ 

                                   8
 뫠   ⤥쭮.᫨ ।  ᪠  㬮,-
 㤥 ९।.  ஢ 蠥  宦 -
   । 讣 䠩  ९뫪 .᫨  筮 -
㬫,ࠧ    楫 祭 ᯥ譮 ।.
᫨ ⤠  ॠ ஢ MNP  祬 5,  ᮣ -
訩 饯ন ஢. 砥 ⢨ ॠ樨 ⤠
 MNP ,  筮 ஢ .⨣ ᮪ந-
⥫쭮 ᪮ MNP-5,DTE ᪮   㢥祭.뫪 
DS2245M  9600 /ᥪ  DS2245M ᨬ஢ ந⥫쭮.
ᮢ ᪮  ࠢ ⮪     -
 .
MNP 易⥫쭮  ࠡ  ᯮ짮  \N. \N0  뢠
ଠ ०  ᯮ짮 ᮣᮢ ᪮  㪠 .\N1
뢠 אַ ०,  אַ   .\N2 
 ०. 뢠  MNP  ४頥 맮,᫨  ᯥ譠.
\N3  ⮭ ०, 뢠 訩 , -
 ন.᫨ ⤠   ন MNP ,⮣ ⠭-
 ⠭ .
 ஢ ᮣᮢ MNP ,DS2245M  ६   
⪫  㣨 .᫨   -MNP    ୮ ⪫,
 ६ ࠭稢 12 ᥪ㭤. 設⢥ 砥,প  뢠-
 㤮.᫨  ந室, DS2245M   S-ॣ  㬥襭
⮣ ६.⠭  S43=1  ࠧ ⮭ ࠢ ࠢ-
. 㤥 ᮬ, ஬ DS3345M 뢠 ᮣᮢ MNP ,᫨
ਭ ࠭ ᨬ. 㬮砭 S43=0 :  ࠢ ࠢ-
. ࠢ ࠢ 롨ࠥ १ S44.ᯮ 㬠-
 祭 13d (0Dh). ᮮ⢥  ⪨  ASCII.⨬,
 짮⥫ ஫ ⭮ 㦤    ⮣  롮 ᨬ-
 ࠢ ࠢ. ᮫⭮  롮  ᨬ
ࠢ ࠢ.⠭⭮ ᮣᮢ MNP  ᯮ짮 
  256 祭, .⮬ ⮭ ࠢ -
ࠢ 㤥 ࠧ஢  ᫨ ⥬   ਭ 
  .


                 -      /   .      
                                              .
                       ᥪ                       

EXECUTABLE     66520       192           346.5      3465        144%
ASCII TXT      70102       180           389.5      3895        162%
POSTSCRIPT    101156       230           439.8      4398        183%
TIFF           29668        61.5         482.5      4825        201%

ਬ砭   : TIFF 䠩 ᨫ쭮   ⠢,
                   筮  ⭮襭 ᦠ.

    

ᮢ ᪮  DTE-᪮ ।   ᨬ
  ᪮ ⥫䮭.᫨ DTE 뫠  9600 /ᥪ,⮣ 
 묨.  㤥 , DS2245M ᯮ ࠢ
⮪  ⠭ 室 . 孨  ᯮ㥬,
ᯮ MNP ,⠪  ᦠ⨥   뫠 䥪⨢ ᪮-
,訥 祬 2400 /ᥪ.  , DS2245M ᦨ  -
  ⠪    .ᮢ   ⠪ 
䥪⨢  -MNP 짮⥫,  ਭ  㯭 -
  2400 /ᥪ,⠪    (᪥). ⮬ 砥,᫨ 
ᯮ ᮣᮢ ᪮⥩,⮣ DTE ॡ ᪠  1200 /ᥪ
⠪  2400 /ᥪ  ᫨誮 묨.ᮢ ᪮ 
  ᪮ ७ .\N0 ⨢ ᮣᮢ ᪮,
MNP  ᯮ. ᯮ MNP,ᮡ ᮣᮢ ᪮
ᯮ ⮬᪨.ࠢ ⮪ ।  \Q.

  
-----------
DS2245M   ⨬஢  .  ࠧࠡ뢠
⠭⭮  ஥ ⥬   㦭 㭪樨,ॡ㥬  ࠡ
. DS2245M 室   ﭨ (⥫䮭 ), 
.᫨ 짮⥫ ॡ ୮   ﭨ,
᫥⥫쭮 +++   ᫠   ६  1 ᥪ । 
᫥. ୥ ࠢ  짮⥫.


                                9
                                                          ⠡  7
                           
Ŀ
     ᠭ                                                       
Ĵ
AT        䨪  ப,।騩 ᥬ ,᪫   
            +++  A/                                                
A         祭 ⢥ ⮭ 뫮 .騩 ⢥ -  
          䮭.                                                          
/        ७ ᫥  ப                            
0        롮 CCITT V.22  V.21 裡  1200 /ᥪ  300 /ᥪ 
          ᮮ⢥⢥                                                   
1        롮 Bell 212A  103  1200  300 /ᥪ ᮮ⢥⢥. 
           ஢ 㬮砭.                                           
D          ᫥饣 .᫨  ஢,D ࠥ - 
            ०(  ⮭ 뫪), ᯮ짮 
          ᫥.騥 ०   ન .
           ६(饭).ਭ  㬮砭.     
          ᫥饣 DTMF (⮭ 뫪). ,-  
           ४砥 ० 㬮砭    ⮭ 뫪.  
 ,        㧠  2 ᥪ㭤                                                
  ;             ०.                        
 !        祭 ਢ離                                             
 @         ᢮  । ஬                     
 W         ⮭ 뫪                             
0         -ᨬ   ﭨ                           
1        -ᨬ   ﭨ.稢 ஢.          
0        ࠧꥤ ⥫䮭                                            
I0        ந⢮ ID                                              
L0/L1      ஢ ஬ .砭                       
L2        । ஢ ஬                                 
L3        ᮪ ஢ ஬ .                               
            ࠢ ᮬ 뢮  .2  .3              
0        ⪫祭                                                
1        祭  ⮫쪮  ६ ᮥ.砭.          
0        ꥬ 㡪  ⠭ ᮥ.᫨ ᮥ 㦥      
          ⠭,饭  ⮭ ﭨ .砭.     
SR=N      ⠭  S ॣ r 祭 n                             
SR?       뢥 祭 S ॣ r.                                   
Z          .२樠 ᥣ,᪫ ⠭ UART.    
&D0       ஢ DTR.砭.                                     
&D2        㡪, DTR ⨢.                             
&P0           ⭮襭 ᮧ/ࠧ 39/61 ().
          砭                                                        
&1          33/67 ()                           
  >       맮 . 㬮砭 \N3\V1\Q2 S0=1 S45=1                   
 \N0      ଠ ० (⮫쪮 ᮣᮢ ᪮)                  
 \N1      אַ ०. 砭.                                         
 \N2       ०                                                   
 \N3      - ०                                              
 \Q0       ࠢ ⮪.砭.                                
 \Q1      \몫 ࠢ ⮪.                                   
 \Q2      ࠢ ⮪ (RTS&CTS)                           
 \Q3      ࠢ ⮪  ,                              
 \V0      ⮫쪮 ᮮ饭 裡.砭.                                
 \V1      ᮮ饭 REL  裡 MNP.                                     
 \V2      ⮫쪮 ଠ  אַ ०                               
 \V3      ଠ,אַ  ᮮ饭 REL                              
 %0      ᦠ⨥  ஢                                        
 %1      ᦠ⨥  ࠧ஢.砭                           


                                              ⠡ 8
                  
Ŀ
#    ᫮      ᠭ                                           
Ĵ
  0     OK             ᯮ                                  
  1     CONNECT        맮,易  300 /ᥪ                     
  2    RING            ⥪஢ 楢 ᨣ                      
  3    NO CARRIER        ⥪஢   ᨣ 饩  
  4    ERROR           ୠ ,筠 ஫쭠 㬬        
  5    ONNECT 1200    맮,易  1200 /ᥪ                    
  6    NO DIAL TONE     ⥪஢ ⮭                 
  7    BUSY            ᨣ ⮢ ⥪஢  ६ ࠡ - 
                                                                    
 10    ONNECT 2400     ᮥ 맮  2400 /ᥪ                  
     TMF = X         ⥪஢  DTMF ,X =                 


                           10
                                              ⠡  9
                S-
Ŀ
ॣ        㬮砭   ᠭ                              
ĳ
 S0     0-255 쥢   0       ⢮  쥢 । ⢥⮬ 맮.
                                 ࠬ ࣮ᨬ.           
 S1     0-255  -/-      0       ࠡ稩  ⢠ 쥢       
 S7     1-255 c㭤    30        DS2245M  饩 - 
                                  ⤠                  
 S11    0-255 ᥪ      70      ⥫쭮  DTMF                  
 S30    2-255 ᥪ㭤     2       ਮ  ॡ ⮭- 
                                 뫪 ⢥. ६ ८-  
                                 ᫥  室饩  DTMF  
 S42    0-1              0      ࠧ஢ ४饭 室 ᨬ-
                                  , S42=0:஢- 
                                 ४饭 ᨬ, S42=1.  
                                ࠬ ࣮ᨬ.                
 S43    0-1              0      ࠧ஢ ࠫ樨 ࠢ-  
                                 ⮭  S44,᫨ S43=1.  
                                ࠫ ࠢ,᫨ S43=0  
 S44    0-255           13      ᨬ ࠫ樨 ࠢ -   
                                ⮭ . 㬮砭 ਭ   
                                 ⪨. (CR).                   
 S45    0-1              0      ᯥ஢ ࠧ஢  -    
                                ᫥⥫쭮 #S+S# Teleservicing,    
                                ᫨ S45=1 ,⢨ ᯥ஢,  
                                ᫨ S45=0. ࠬ ࣮ᨬ.
 S46    0-255 ஢   5      ⢮ 맮  ஢   
                                ,  ⢥. -
                                 ࣮ᨬ.                    
 S47    1-255            3      ⢮ ⮪ ᡮ 室 ᫮ 
                                 ० ⥫㦨                
 S48    1-255       5      ६  맮 ஢     
                                . ࠬ ⠪ ࣮-  
                                ᨬ.                                   
 S49    0-1              0      ஫ ⮭ 뫪     
                                । ஬ ,᫨ S49=0, -  
                                ⢨ ஫ ,᫨  S49=1.             


               

⤠ 㤮  ᯮ짮  ࠧࠧ묨 ᯮᮡ.-
    ஭ । ४஢ , 㣨 -
 ᮮ饭 ॣ樨  .  ⠪ ᯮ짮-
  ६ ⨪ 㧪   ᪠ ࠢ⥩,᫨ -
 ⥪஢ ⤠ ⥬ ஬.ப஫ Dallas Se-
miconductor  ⠪   ᯮ짮 ࣮ᨬ RAM
  ணࠬ ,⠪    .DS2245M ᯮ 㭨-
 ० leservicing,  짮⥫  業ࠫ쭮 
뢮  ࠭  ।஢    १㦠 ணࠬ
 ⤠ ⥬,᭮  ப஫ Dallas Semiconductor
 ⥫䮭.  ⥬ ८ࠧ ॣ   ⥬-
 ᯥ஢  뢠  ࠢ  ⥫䮭.⤠ -
⥫  ⥬ ஢  ,㧨 ᮡ ᪮
  ४஢ ।  १ .   ᤥ 
裡  ⥬ ਪ .DS2245M 蠥   ᯥ஢ 室-
  ( ஭ ⥫䮭  ) ᫥⥫쭮 ASCII
#S+S#PASSWORD ,᫨ S-ॣ 45 ⠭  1."PASSWORD" 㪠뢠 롮 
㬮砭.    ᫥騬 ࠧ:#S+S#PASSWORD/NEWPASS/NEWPASS
(cr).᫨  ᮡ ࠧ஢, ਭ ᫥⥫쭮 #S+S# ,
DS2245M ४頥 ਭ ᨬ  DTE  ᥪ⭮ 祢 ᫮.
㦤 த ,   蠥   
ப ୮ 祢 ᫮. ⮫쪮 ਭ 襭 ᫥-
⥫쭮 leservicing ( ୮ 祢 ᫮),DS2245M ⠢ .1 
᪨  ஢.  ᨣ  樠樨 ᫥-
⥫쭮 ᠬ稪  DS2340 Soft V40 Stik  筮 ன⢮.
ப஫  ⥬,ᮢ⨬  ,᭮  ࣮-
ᨬ RAM  ணࠬ    .᫥ ⮣  ਭ ᫥-
⥫쭮 祢 ᫮,⤠ 짮⥫ 㤥    ᠬ-
稪 ப஫.ঠ  ⮣ ப஫  
뢥  ࠭,।஢  १㦥 ,᫨ 室. -
㧪   襭,ਬ    뫪  
᫥⥫쭮 #S+S#.C 㧨(Load) 㤥 ⥬ ⠭ 
 ⠭  ࠫ쭮 䥩. leservicing  
ࠧ஢ । ᬮ஬ #S+S#, 㤥 ᤥ. 㪠 ,

                                  11
ந室  ⠭ S45 =1. ࠬ ࣮ᨬ,⠪   
⠭   ࠧ.᫨ S45=0 , ᬮ  ந室.᫨  室
樠樨 ० leservicing,砥 ୮ 祢 ᫮, -
⮬  筠 .⤠ 짮⥫   -
  ᫥⥫쭮 ᭮.,⢮ 㤠 ( ୮ -
 ᫮ )ࠢ 祭  S-ॣ 47.᫨ ᫮ ᯮ ॢ-
襭,DS2245M ४頥 맮 䮭.
⨬, ᬮ #S+S#   ᤥ   ଠ쭮,   -
 ०.    த  אַ ०., -
 S45=1,ਬ  AT\N0,AT\N2,AT\N3.
 浪 ᯥ祭 ⮣,  DS2245M ᯮᮡ ⢥  ⥫䮭 -
  DTE ﭨ,S-ॣ 0  ࣮ᨬ ࠬ஬.᫨ 
ࠬ 樠  㫥 祭, ६ ७ ணࠬ-
 ⥬,DS2245M ᥣ 㤥 ᯮᮡ ⢥.,  १-
 ⤠, ᫨ ஫ DTE  .⢥ ⮤
  S0  諥     祭 (ATZ,UR 
祭-   䥪).⥫쭮,S-ॣ 42  
஢ ᨬ,室騥  DTE  ६ ᫥⥫쭮 ⠭
ᮥ. ᨬ 筮 ४ ᮥ.᫨ S42=0, 
㤭 ᮥ   ࠢ塞 ப஫஬.⠭ S42=1
 ४饭 祭 室饣 ᨬ. ࠬ ⠪ 
࣮ᨬ.
⨬, DS2245M ᯮ 뢮()  ࠢ ࠧ묨 ᯮᮡ-
. 10 㬬 ᯮ짮  ᫮   ३.ࠢ -
஬ 㤥 㯭  室 ० leservicing,  ६   ࠢ-
  ୠ⨢묨 ᯮ짮ﬨ.

   
--------------
த  Dallas ⠪ ᯥ稢   ࠧ襭 "⥬⨧-
"   ⥪஢    ⮬⨧᪮ -
맮 . 맮  ন DS2245M.業਩ 맮 -
 ࠡ⠥ ᫥騬 ࠧ. 祭 ⠭, ८ࠧ CRC-16 -
१   .᫨ CRC  ,⮣ ᠬ稪
 Dallas 㤥 樠஢ ⮬᪨.  Dallas ࠢ ᢮
 ஢ 뢮 .0,⮣ DS2245M ⠢ Out1  ⨢ ﭨ.Out1
易  뢮 PROG (30) 뢮 .0  뢮 DS2245M CP3.6(6). ⥪-
, 뢮 6 室   ஢  ६  ,
 맮 ᨣ .   ,DS2245M ⮬᪨
 楤, ।  AT.   ।-
। ᫥⥫쭮 ⢨,  ࣮ᨬ -
.   ⢨,।   ப,᫥饩  >
८ࠧ, ਭ 맮 ᨣ . 楤  -
   ।। 䮭 ᫠ ,⠭   MNP  -
⠭ S0=1  ⢥ 䮭.⨬, S45 ⠭  1   ᪮
  ०  ᯮ   맮 ப .
 . > ࠭   ⠭,    
㬠 .᫨ ७ 맮 ᯥ襭, 맮 楤 
ᯮ  ࠬ.祭,  S46 ,। ⢮
ࠧ,஥ DS2245M ਭ 맮  楤   祭 S48 ।-
 ࢠ ६    ⠭ﬨ.
 ᮥ ⠭,  室騥 .  ६,DS2245M
।࠭ 室  ( ஭ ⥫䮭 ) ᫥⥫쭮
leservicing,᫨ S45=1.᫥⥫쭮 ASCII  #S+S#PASSWORD  
ਭ  ᫥饬 ⢨.祢 ᫮ 㪠뢠⭠ 롮  㬮砭.
 ⮫쪮 ਭ ४ ᫥⥫쭮,DS2245M ॠ 
⮤.,뢮 .1(2)   ஢.ன,⨢-
 DSR. ⢨ 뢠 , 祢 ᫮ ୮    -
㦥. १㧪 襭,᭮  뢠 DS2245M
 ४饭 맮 .
맮  㬮砭 ப  :  \N3\V1\Q2 S0=1 S45=1 .  ப
ন,   짮⥫.⨬ ᪨ ६:
 1. ᯮ ᪮⭮ ० /.
 2. DS2245M ⢥,᫨   蠥(S0=1)
 3. ᬮ 祢 ᫮ ࠧ஢

DTMF 
------------------
㣠 㭨쭠 ᮡ DS2245M 砥  ⥪஢  -
 室 ᨣ DTMF , । १ ⥫䮭 .
ᮡ ᯮ, ⤠ 㭪   ,  -
 ଠ    ⥬. DS2245M ⢥砥  ⥫䮭,
  ਮ ६,। S30.᫨ ⮭ 뫪 DTMF ਭ
 ६ ⮣ ࢠ,  ஢. ਥ ⮭ 뫮
DTNF  S30 롨ࠥ ⠩.,ਬ,S30=5,⮣ ࠧ襭 5 ᥪ㭤
砭  ⥪஢ DTMF.᫨  ६ ⠩ ਭ ⮭ 뫪
DTMF,⮣ ࠧ ⥫ 5 ᥪ㭤.  த,

                          12
ਮ ६,। S30  ன  ⮭ 뫪. ⮭
뫪 ⢥ ਭ,   ࠧꥤ. 祭 S30
 2 ᥪ㭤, । FCC  ।ᠭ প. 3 뢠
楤  ஢ ᨣ DTMF,   ᫥⥫쭮 ᮥ-
.

                       3        135

ॢ   奬    3

楢 ᨣ ⥪஢  RI

  ᫮  S0 ?

""㡪    

 ⠩  祭  S30

ਭ  DTMF?                       ᫠   १
                                           DTMF

祭  ⠩?

 ᫥⥫쭮 ⢥



ୠ⨢ ਬ  ஢ DTMF  ࠧ饭 -
 ⥬   ⥫䮭      ᫥⥫쭮
DTMF . ⥫䮭 殢뢠, DS2245M   ⨥ 㡪 
稭 ணࠬ㥬 砭  ६. 祭 ⮣ ࢠ,⤠-
 짮⥫ 뫠 ᫥⥫쭮 DTMF   DS2245M 
.쪮 ਭ ⥬  ⢥. 㣨 뢠 ࠧꥤ
 ᯮ짮  ᨬ ४饭 ᫨ S42=0  ४祭 DTR,᫨
AT  D2 㦥 뤠.

͸
 뢮   㭪         ᫮       㭪           ᫮    
                                                               
͵
 .0    䨪/              DS2245 ⨯      .0 -   
         ய                       ࠢ        ⮫  
                                ஬               
                                                         ஢    
Ĵ
 .1                     뢮 -         #S+S#      
                                       㧪                       
Ĵ
 .2    ࠢ                         #S+S#      
         ஬                                                   
Ĵ
 .3     -/-             -/-          맮              -/-       
                                                              
                                                                    


 
--------------------
 砥 ७   DS2245M   ९ணࠬ஢.-
 뢮 RG  ᪨  ஢,樠㥬 १ ᠬ-
稪  ஥ ப஫ DS5000. ᯮ짮 ⮩ 㭪樨,
 ⢥ত  ᨣ  뫠  ⪨ ASCII. ⢥-
  ᪠. ⮩ ᪠,  ᫠    ASCII.
ࢮ,DS2245M   ࠧ஢  ᯮ짮  U.⥬
ॡ ᫠ L.᫥ ⮣,  ਥ 䠩  ⭠筮
ଠ Intel. ⮫쪮 䠩  㦥,   ஢ 
뫪 V  ९뫪 䠩.,   ஢ 뫪 Z.-
   ६,᪠ 稪  頥  ஬⮪ ६,
  ᫠ ^.   DS2245M १㧨  ᯮ-
 ⮣  ⭮ 䥩, ᯮ  ଠ쭮 -
. ⠪  騬  樠樨 稪  ᮥ OUT1
 PROG  ᯮ짮   ⠢ ⮣ ᫮ १ UART. ଠ-
樨  稪   㪮⢥ DS5000.DS2245M ⠪   ९ணࠬ-
஢  ᯮ짮 DS2245K  Evaluation Kit.

                    4  5        136

                                13
 

  
殮   뢮 ⭮⥫쭮            -0.3 - +7.0 
 ࠡ                                       0 - 70 ..
 ࠭                                    -40 - +70 ..
 ࠧ襭                                  +260 .  10 ᥪ

        =0 - +70 ., Vcc=+5  +-10%
͸
   ࠬ             ᨬ      ଳ    栳 ਬ砭
͵
殮 ⠭         Vcc    4.5  5.0   5.5      B         1    
⮪  ⠭               Icc         50    100              1    
殮         Vil               0.8      B         1    
 ஢                                                       
殮         Vih    2.0        Vcc      B         1    
᮪ ஢                                                      
⮪         Iil              +-10                  
஢ @ V il min                                                    
殮 뢮 -   Voh    2.4  4.8           B          1    
᮪ ஢ Ioh=80                                              
殮 뢮    Vol         0.15 0.45     B          1    
᮪ ஢ Ioh=80                                              


  

   /   =0 - +70 ., Vcc=+5  +-10%
͸
 ࠬ               ᨬ          栳 ਬ砭

 &S ⠭      tACS      60                            
 &S 䨪       t      20                            
 ਭ ஡ ⥭    tRD      125                            
 প 横 ⥭   tRCD     175                            
 饥 ६ 横 RD    tRCT     360                       2    
 ୮  RD to Data      tRVD     125                            
 RD to Data Hi-Z         tHZ                  100                
 ਭ ஡ WR        tWR      100                            
 প 横    tWCD     200                            
 饥 ६ 横 WR    tWC     360                       2    
 ⠭         tDS       40                            
           tDH       40                            
 ਭ  UR      tURW      40                           



   
͸
 ࠬ                    ᫮        ଳ      
͵
  ६ -                      200  300           
 室 AOUT                                                          
 㧪 뢮  AOUT                     10                    
 筮  DTMF                    -0.25     +0.25     %     
 㤠        DTMF     㧪    -10       -8       dBm0   
                           ப ᠳ -8        -6       dBm0   
                                                                    
 DTMF twist                 ᮪ .-  1.0  2.0  3.0           
                             .                              
 㤠 ⮭ -                    -11  -10  -9       dBm0   
 뫪 ⢥ 2100                                                
 ᪠ ⮭ -                              -40           
 뫪 ⢥ 2100                                                
 㤠        砩     -11  -10  -9       dBm0   
 QAM,DPSK,FSK ०                                           



                                   14

   
͸
 ࠬ                    ᫮        ଳ     栳
͵
  ६       AIN=0.5. 10                    
  AIN                 ᨭᮨ                               
                              1                                 
 ஢ ⥪஢     2 ⮭ --34                dBm0   
 室 ࠡ                뫪  -                           
                             350-                            
                            620                                  
                                                                   
 ஢ ⪠ 室                                               
 ࠡ                       -/-                   -40      -/-   
                                                                   
 ⥫쭮 ⮭                                              
 뫪 室 ࠡ        蠣  -70  25                   
  ୮ ⥪-      -30 dBm0                               
                                                              
                                                                   
 ஢ ⥪஢      ⮭ -32        -2     dBm0   
 DTMF                       뫪                                
                                                                   
 ⥫쭮 DTMF                     40                   
 ⥪஢                                                    
                                                                   
 ஢ ⥪஢                   -48        -43    dBm0   
 饩                                                           
                                                                   
 (QAM,DPSK,FSK)                                                    
                                                                   
 १ ஢ -                    2.0               dBm0   
 ⥪஢ 饩                                              
                                                                   
 ⥫쭮 饩                     15                   
  ⥪஢                                                




1. 殮 
2. tRCT  = tASC + tRD + tRCD
3. tWCT  = tACS + tWR + tWCD

                          ͸
                               ࠧ                 
                                                           
                          ͵
                                           3.500          
                                B           3.234          
                                C           0.850          
                                D           0.400          
                                E           0.250          
                                F           0.100          
                                G           0.080          
                                H           0.300          
                                I           2.900          
                                J           0.125      
                                K           0.360          
                                L           0.125          
                                M           0.050          
                          


