* Not included in the official RS-232-D specification
Comm. Reg. bit 7
TM
TEST MODE
X
25
TRxCA pin
DA
TXCLK (DTE)
X
24
N/C
23
PCMCIA STSCHG signal
CE
RING
X
22
Comm. Reg. bit 4
RL
RLBK
X
21
DTR/REQA pin
CD
DTR
X
20
N/C
19
Comm. Reg. bit 5
LL
LLBK
X
18
RTxCA pin
DD
RXCLK (DCE)
X
17
N/C
16
TRxCA pin
DB
TXCLK (DCE)
X
15
N/C
14
N/C
13
N/C
12
RTxCA or TRxCB pin
*
RXCLK (DTE)
X
11
SYNCA pin
*
SYNCA
X
10
N/C
9
DCDA pin
CF
CD
X
8
AB
DGND
7
DCDB pin
CC
DSR
X
6
CTSA pin
CB
CTS
X
5
RTSA pin
CA
RTS
X
4
RxDA pin
BB
RXD
X
3
TxDA pin
BA
TXD
X
2
CGND
1
Table 17 --- Connector Pin Definitions
19.3 Null-modem cables
The MPAP-100 does not use a standard asynchronous PC serial port connector pinout.
Typical off-the-shelf null-modem cables cannot be used with this card!