SP503 Datasheet, PDF (26/29 Pages) Sipex Corporation – Multiprotocol Transceiver

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26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
EDGE
CONNECTOR
DUT PIN
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
CONNECTOR
DUT PIN
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.
Date: 7/29/04
SP503 Multiprotocol Transceiver
26
© Copyright 2004 Sipex Corporation