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SP522CT 数据表(PDF) 18 Page - Sipex Corporation |
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SP522CT 数据表(HTML) 18 Page - Sipex Corporation |
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18 / 22 page ![]() 18 Rev. 7/10/03 SP522 Multi–Mode Serial Transceivers © Copyright 2003 Sipex Corporation Figure 15. Adding extra channels using the SP522 and SP504 CIRCUIT CIRCUIT NAME CIRCUIT CIRCUIT MNEMONIC DIRECTION TYPE SG SIGNAL GROUND -------------- SC SEND COMMON TO DCE RC RECEIVE COMMON FROM DCE IS TERMINAL IN SERVICE TO DCE IC INCOMING CALL FROM DCE TR TERMINAL READY TO DCE DM DATA MODE FROM DCE SD SEND DATA TO DCE RD RECEIVE DATA FROM DCE TT TERMINAL TIMING TO DCE ST SEND TIMING FROM DCE RT RECEIVE TIMING FROM DCE RS REQUEST TO SEND TO DCE CS CLEAR TO SEND FROM DCE RR RECEIVER READY FROM DCE SQ SIGNAL QUALITY FROM DCE NS NEW SIGNAL TO DCE SF SELECT FREQUENCY TO DCE SR SIGNAL RATE SELECTOR TO DCE SI SIGNAL RATE INDICATOR FROM DCE SSD SECONDARY SEND DATA TO DCE SRD SECONDARY RD FROM DCE SRS SECONDARY RS TO DCE SCS SECONDARY CS FROM DCE SRR SECONDARY RR FROM DCE LL LOCAL LOOPBACK TO DCE RL REMOTE LOOPBACK TO DCE TM TEST MODE FROM DCE SS SELECT STANDBY TO DCE SB STANDBY INDICATOR FROM DCE RS-449 Interchange Circuits Table CONTROL COMMON DATA TIMING CONTROL DATA CONTROL CONTROL CONTROL VCC VDD 61 59 +5V SP504CF Drivers TxD 14 58 56 DTR 13 54 52 RTS 16 63 65 TxC 15 42 44 ST 22 47 45 RL 17 51 49 LL 24 70 71 RxD 1 37 38 RxC 20 66 67 CTS 80 68 69 DSR 78 35 36 DCD 19 39 40 RI 21 76 77 SCT 79 Receivers see pinout diagram for various ground pins 4 22 12 30 7 25 17 35 6 24 8 26 9 27 11 29 13 31 15 5 23 DB-37 Connector 10 14 32 VSS 22µF 22µF22µF 22µF various VCC supply pins 27 26 30 28 31 1N5819 C1- C2- C1+ C2+ 10µF 12 11 10 9 TDEC0 TDEC1 TDEC2 TDEC3 RDEC0 RDEC1 RDEC2 RDEC3 2 3 4 5 +5V 13 VCC SP522 1 20 21 22 10µF 10µF 11 15 10 9 18 24 1 0 0 1 Tied to TDEC0 Tied to TDEC1 DP1 DP0 +5V 10µF + + + + ++ + + VDD VSS 7 8 14 RS-423 Outputs RS-423 Inputs –5V 6 4 5 3 LATCH_EN 2 LOOPBCK GND |
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