SP504 Datasheet, PDF (25/32 Pages) Sipex Corporation – WAN Multi-Mode Serial Transceiver

MODE: RS-485
DRIVER
RECEIVER
TDEC ₃ TDEC ₂ TDEC₁ TDEC₀ RDEC ₃ RDEC₂ RDEC ₁ RDEC ₀
0
1
0
1
0
1
0
1
RD(a) 70
RxD 1
RD(b) 71
RT(a) 37
RxC 20
RT(b) 38
CS(a) 66
CTS 80
CS(b) 67
DM(a) 68
DSR 78
DM(b) 69
RR(a) 35
DCD 19
RR(b) 36
IC(a) 39
RI 21
IC(b) 40
SCT(a) 76
SCT 79
SCTEN 7
SCT(b) 77
RECEIVERS DRIVERS
14 TxD
61 SD(a)
59 SD(b)
13 DTR
58 TR(a)
55 TR(b)
16 RTS
54 RS(a)
52 RS(b)
17 RL
47 RL(a)
45 RL(b)
24 LL
51 LL(a)
49 LL(b)
22 ST
42 ST(a)
44 ST(b)
23 STEN
15 TxC
63 TT(a)
65 TT(b)
6 TTEN
STEN
1
0
ST
TTEN TT SCTEN SCT
Disabled 1
Disabled 1
Enabled
Enabled 0
Enabled 0
Disabled
Figure 24. Mode Diagram — RS-485
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
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SP504_102_121708