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| Datasheet File OCR Text: |
| MB89371APF(1/3) IL00D C-MOS DUAL SERIAL DATA TRANSMITTER / RECEIVER UNIT --TOP VIEW-- 36 35 34 33 32 31 30 29 28 27 26 25 37 38 39 40 41 42 43 44 45 46 47 48 NC NC VDD OPEN OPEN GND NC NC 24 23 22 21 20 19 18 17 16 15 14 13 NC ; NON CONNECT TERMINAL (OPEN) OPEN ; NEVER CONNECT TERMINAL w w w .d ee sh ta a u. t4 om c www..com PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 I/O I/O I/O I/O I/O I I I I I O I I I -- I O SIGNAL DB4 DB5 DB6 DB7 TRNCLK1 W CS1 RSLCT0 R RCVRDY1 RSLCT1 CS2 RCVDT2 NC TRNCLK2 RCVRDY2 PIN NO. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 I/O O I/O -- I O O O -- O O I O I/O I O O SIGNAL TRNRDY2 SYNC/BRK2 OPEN CTS2 TRNEMP2/ST1-2 TRNDT2 DSR2 NC RTS2 DTR2 RCVCLK2 TRNRDY1 SYNC/BRK1 CTS1 TRNEMP1/ST1-1 TRNDT1 PIN NO. 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 I/O I I I O I -- I -- I/O I/O -- I/O I/O I -- -- SIGNAL CLOCK RST DSR1 RTS1 DTR1 NC RCVCLK1 VDD DB0 DB1 OPEN DB2 DB3 RCVDT1 GND NC MB89371APF(2/3) INPUT CLOCK CSn CTSn DSRn R RCVCLKn RCVDTn RSLCTn RST TRNCLKn W OUTPUT DTRn RCVRDYn RTSn TRNDTn TRNEMPn/ST1-n TRNRDYn INPUT/OUTPUT DBn SYNC/BRKn ; ; ; ; ; ; ; ; ; ; ; CLOCK (4,9152 MHz) FOR REFERENCE OF TIMING CHIP SELECT OF CHANNELn. (n = 1 OR 2) CLEAR TO SEND OF CHANNELn. (n = 1 OR 2) DATA SET READY OF CHANNELn. (n = 1 OR 2) READ ENABLE RECEIVER CLOCK OF CHANNELn. (n = 1 OR 2) RECEIVE DATA OF CHANNELn. (n = 1 OR 2) REGISTERS SELECT LINEn. (n = 0 AND 1) RESET PULSE TRANSMITTER CLOCK OF CHANNELn. (n = 1 OR 2) WRITE ENABLE TRANSMITTER EMPTY / BAUD RATE CLOCK OUT OF CHANNELn. (n = 1 OR 2) ; TRANSMIT READY OF CHANNELn. (n = 1 OR 2) ; ; ; ; ; DATA TERMINAL READY OF CHANNELn. (n = 1 OR 2) RECEIVER READY OF CHANNELn. (n = 1 OR 2) REQUEST TO SEND OF CHANNELn. (n = 1 OR 2) TRANSMIT DATA OF CHANNELn. (n = 1 OR 2) ; DATA BUS LINEn. (n = 0 TO 7) ; SYNCHRONIZATION CHARACTOR / BREAK CODE DETECT OF CHANNELn. (n = 1 OR 2) ; NON CONNECT TERMINAL (OPEN) ; NEVER CONNECT TERMINAL NC OPEN MB89371APF (3/3) RCVCLK1 RCVCLK2 27 TRNCLK1 TRNCLK2 RCVDT1 RCVDT2 TRNDT1 TRNDT2 DSR1 32 36 37 46 30 35 5 39 22 25 26 13 20 23 DSR2 DTR1 DTR2 RTS1 CTS1 RTS2 CTS2 LOOP BACK CONTROL CHANNEL 1 LOOP BACK CONTROL CHANNEL 2 SERIAL DATA TRANSMITTER / RECEIVER CLOCK CONTROL SERIAL DATA TRANSMITTER / RECEIVER CLOCK CONTROL 41, 42, 44, 45, 1 - 4 DB0 - DB7 ADDRESS DECODER INTERRUPT MASK MODE SETTING REGISTOR BAUD RATE SETTING REGISTOR BAUD RATE GENERATOR INTERRUPT MASK MODE SETTING REGISTOR 15 BAUD RATE SETTING REGISTOR 28 10 29 31 17 16 18 21 33 11 12 8 7 6 9 TRNEMP1/ST1-1 TRNEMP2/ST1-2 CS1 CS2 W TRNRDY1 RCVRDY1 SYNC/BRK1 TRNRDY2 RCVRDY2 SYNC/BRK2 RSLCT0 RSLCT1 R CLOCK RST 34 |
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