參數(shù)資料
型號: SP502
英文描述: Multi-Mode Serial Transceiver
中文描述: 多模式串行收發(fā)器
文件頁數(shù): 16/32頁
文件大?。?/td> 345K
代理商: SP502
Rev. 7/21/03
SP502 Multi-Mode Serial Transceiver
16
Copyright 2003 Sipex Corporation
Figure 9. Mode Diagram — RS-422
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
0 1 0 0 0 1 0 0
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)
45 RL(b)
24 LL
51 LL(a)
49 LL(b)
ST/TT ST TT RxT*
1 Enabled Disabled Active
0 Disabled Enabled 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.
RxT 79
15 TxC
42 ST(a)
44 ST(b)
6 ST/TT
63 TT(a)
65 TT(b)
MODE: RS-422
DRIVER RECEIVER
TDEC
3
TDEC
2
TDEC
1
TDEC
0
RDEC
3
RDEC
2
RDEC
1
RDEC
0
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