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SP504 Datasheet(PDF) 12 Page - Exar Corporation |
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SP504 Datasheet(HTML) 12 Page - Exar Corporation |
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12 / 32 page  2 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 PINOUT… PIN ASSIGNMENTS… CLOCK AND DATA GROUP Pin 1 — RxD — Receive Data; TTL output, sourced from RD(a) and RD(b) inputs. Pin 14 — TxD — TTL input ; transmit data source for SD(a) and SD(b) outputs. Pin 15 — TxC — Transmit Clock; TTL input for TT driver outputs. Pin 20 — RxC — Receive Clock;TTLoutput sourced from RT(a) and RT(b) inputs. Pin 22 — ST — Send Timing; TTL input; source for ST(a) and ST(b) outputs. Pin 37 — RT(a) — Receive Timing; analog input, inverted; source for RxC. Pin 38 — RT(b) — Receive Timing; analog input, non-inverted; source for RxC. Pin 42 — ST(a) — Send Timing; analog output, inverted; sourced from ST. Pin 44 — ST(b) — Send Timing; analog output, non-inverted; sourced from ST. Pin 59 — SD(b) —Analog Out — Send data, non-inverted; sourced from TxD. Pin 6 — SD(a) — Analog Out — Send data, inverted; sourced from TxD. Pin 63 — TT(a) — Analog Out — Terminal Timing, inverted; sourced from TxC Pin 65 — TT(b) — Analog Out — Terminal Timing, non–inverted; sourced from TxC. Pin 70 — RD(a) — Receive Data, analog input; inverted; source for RxD. Pin 71 — RD(b) — Receive Data; analog input; non-inverted; source for RxD. Pin 76 — SCT(a) — Serial Clock Transmit; analog input, inverted; source for SCT. Pin 77 — SCT(b) — Serial Clock Transmit: analog input, non–inverted; source for SCT Pin 79 — SCT — Serial Clock Transmit; TTL output; sources from SCT(a) and SCT(b) inputs. CONTROL LINE GROUP Pin 13 — DTR — Data Terminal Ready; TTL input; source for TR(a) and TR(b) outputs. Pin 16 — RTS — Ready To Send; TTL input; source for RS(a) and RS(b) outputs. Pin17—RL—RemoteLoopback;TTLinput; source for RL(a) and RL(b) outputs. Pin 18 — V35_STAT — V.35 Status; TTL output; outputs logic high when in V.35 mode. Pin 19 — DCD— Data Carrier Detect; TTL output; sourced from RR(a) and RR(b) inputs. Pin 21 — RI — Ring Indicate; TTL output; sourced from IC(a) and IC(b) inputs. Pin 24 — LL — Local Loopback; TTL input; source for LL(a) and LL(b) outputs. Pin 35 — RR(a)— Receiver Ready; analog input, inverted; source for DCD. Pin 36 — RR(b)— Receiver Ready; analog input, non-inverted; source for DCD. Pin 39 — IC(a)— Incoming Call; analog input, inverted; source for RI. RxD 1 RDEC 0 2 RDEC 1 3 RDEC 2 4 RDEC 3 5 TTEN 6 SCTEN 7 N/C 8 TDEC 3 9 TDEC 2 10 TDEC 1 11 TDEC 0 12 DTR 13 TxD 14 TxC 15 RTS 16 RL 17 V35_STAT 18 DCD 19 RxC 20 60 GND 59 SD(b) 58 TR(a) 57 GND 56 TR(b) 55 V CC 54 RS(a) 53 GND 52 RS(b) 51 LL(a) 50 GND 49 LL(b) 48 V CC 47 RL(a) 46 GND 45 RL(b) 44 ST(b) 43 GND 42 ST(a) 41 V CC SP504 |
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