SP502 Datasheet, PDF (14/32 Pages) Sipex Corporation – Multi-Mode Serial Transceiver

MODE: RS-232
DRIVER
RECEIVER
TDEC₃ TDEC₂ TDEC₁ TDEC₀ RDEC₃ RDEC₂ RDEC₁ RDEC₀
0
0
1
0
0
0
1
0
RD(a) 70
RxD 1
RT(a) 37
RxC 20
CS(a) 66
CTS 80
DM(a) 68
DSR 78
RR(a) 35
DCD 19
IC(a) 39
RI 21
RxT 79
14 TxD
61 SD(a)
13 DTR
58 TR(a)
16 RTS
54 RS(a)
17 RL
47 RL(a)
24 LL
51 LL(a)
15 TxC
42 ST(a)
6 ST/TT
63 TT(a)
ST/TT
1
0
ST
Enabled
Disabled
TT
Disabled
Enabled
RxT*
Active
Inactive
* TT driver must be disabled to allow TT(a) and TT(b)
to serve as receiver inputs.
* When the RxT receiver is active, TT(a) and TT(b) act
as receiver inputs. When the RxT receiver is inactive,
it cannot serve as a receiver since its inputs are internally
connected to the TT(a) and TT(b) driver outputs.
Figure 7. Mode Diagram — RS-232
Rev. 7/21/03
SP502 Multi-Mode Serial Transceiver
14
© Copyright 2003 Sipex Corporation