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SP503 数据表(PDF) 26 Page - Sipex Corporation |
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SP503 数据表(HTML) 26 Page - Sipex Corporation |
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26 / 29 page ![]() Date: 7/29/04 SP503 Multiprotocol Transceiver © Copyright 2004 Sipex Corporation 26 EDGE DUT PIN CONNECTOR DESCRIPTIONS 26 ST (pin 22) – TTL Input – Send Tim- ing; source for ST(a) and ST(b) out- puts. SP503 only. 27 STEN (pin 23) – TTL Input — Driver enable control pin; active low. SP503 only, 28 SCT(a) (pin 76) – Analog Input – In- verting; input for SCT receiver; SP503 only. 29 SCT(b) (pin 77) – Analog Input – Non– inverting; input for SCT receiver. SP503 only. 30 V CC — +5V for all circuitry. 31 GND — signal and power ground. 32 LL(a) (pin 51) – Analog Out – Local loopback, inverted; sourced from LL. 33 LL(b) (pin 49) – Analog Out – Local loopback, non–inverted sourced from LL. 34 RL(a) (pin 47) – Analog Out – Remote loopback; inverted; sourced from RL. 35 RL(b) (pin 45) – Analog Out – Remote loopback; non–inverted; sourced from RL. 36 ST(b) (pin 44) – Analog Out – Send timing, non–inverted; sourced from TxC. 37 ST(a) (pin 42) – Analog Output –Send timing, inverted; sourced from TxC. 38 IC(b) (pin 40) – Analog In – Incoming call; non–inverted; source for Rl. EDGE DUT PIN CONNECTOR DESCRIPTIONS 39 IC(a) (pin 39) – Analog In – Incoming call; inverted; source for Rl. 40 RT(b) (pin 38) – Analog In – Receive timing, non–inverted; source for RxC. 41 RT(a) (pin 37) – Analog In – Receive timing; inverted; source from RxC. 42 RR(b) (pin 36) – Analog In – Receiver ready; non–inverted; source for DCD. 43 RR(a) (pin 35) – Analog In – Receiver ready; inverted; source for DCD. 44 LL (pin 24) – TTL Input – Local loopback; source for LL(a) and LL(b) outputs. 45 Rl (pin 21) – TTL Output – Ring indicator; sourced from IC(a) and IC(b) inputs. 46 RxC (pin 20) – TTL Output – Receive clock; sourced from RT(a) and RT(b) inputs. 47 DCD (pin 19) – TTL Output – Data carrier detect; sourced from RR(a) and RR(b) inputs. 48 RL (pin 17) – Analog Out – Remote loopback; source for RL(a) and RL(b) outputs. 49 RTS (pin 16) – TTL Input – Ready to send; source for RS(a) and RS(b) out- puts. 50 TxC (pin 15) – TTL Input – Transmit clock; source for TT(A) and TT(B) outputs. 1 26 2 27 3 28 4 29 5 30 6 31 7 32 8 33 9 34 10 35 11 36 12 37 13 38 14 39 15 40 16 41 17 42 18 43 19 44 20 45 21 46 22 47 23 48 24 49 25 50 |
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