SP503 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'SP503' PDF : 28 Pages View PDF
MODE: RS-449
DRIVER
RECEIVER
TDEC3 TDEC2 TDEC1 TDEC0 RDEC3 RDEC2 RDEC1 RDEC0
1
1
0
0
1
1
0
0
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
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)
56 TR(b)
16 RTS
54 RS(a)
52 RS(b)
17 RL
47 RL(a)
24 LL
51 LL(a)
22 ST
42 ST(a)
44 ST(b)
23 STEN
15 TxC
63 TT(a)
65 TT(b)
6 TTEN
STEN ST TTEN TT SCTEN SCT
1 Disabled 1 Disabled 1 Enabled
0 Enabled 0 Enabled 0 Disabled
Figure 10. Mode Diagram — RS-449
SP503_101_101508
SP503 Multiprotocol Transceiver
17
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