Serial Port and User Equipment Connections
Memotec Inc. 5-9
5.7 Serial Port Connector and Custom HD-26 Cable Set
Connectivity
Table 5-1 on the next page provides the pinout and directionality of signals on the SDM-
9XXX Series serial port connectors and the custom HD-26 cable that connects to these
connectors.
NOTE: For V.24 and V.35, refer to V.35 for the ITU circuit number
Descriptions within parentheses refer to X.21 only
The abbreviation n/a means not applicable.
The abbreviation n/s means not supported.
Main Board Cable V.35
TIA-232/
V.24
TIA-530
TIA-449/
V.36
X.21
ïƒœï€ Interface
HD-26
Female
HD-26
Male
ISO 2593
DB-25/ISO -
2110
DB-25
DB-37/ISO-
4902
DB-15/ISO-
4903
ïƒœï€ Connector
Net-
Name
Pin
Pin
DTE
Pin
DCE
Circuit Pin Signal Pin Signal Pin Signal Pin Signal Pin
Signal
from
Description
TXDA 2 2 3 103 P TXD 2 TXDA 2 TXDA 4 T[A] 2 DTE Transmit Data
(Transmit on
wire)TXDB 14 14 16 103 S n/a n/a TXDB 14 TXDB 22 T[A] 9 DTE
RXDA 3 3 2 104 R RXD 3 RXDA 3 RXDA 6 R[A] 4 DCE Receive Data
(Receive on
wire)RXDB 16 16 14 104 T n/a n/a RXDB 16 RXDB 24 R[A] 11 DCE
TXCA 15 15 15 114 Y TXC 15 TXCA 15 TXCA 5 S[A] 6 DCE Transmit Clock
(Signal element
timing)TXCB 12 12 12 114 AA n/a n/a TXCB 12 TXCB 23 S[A] 13 DCE
RXCA 17 17 24 115 V RXC 17 RXCA 17 RXCA 8 B[A] 7 DCE Receive Clock
(Signal ele-ment
timing)RXCB 9 9 11 115 X n/a n/a RXCB 9 RXCB 26 B[B] 14 DCE
XTXCA 24 24 17 113 U XTXC 24 XTXCA 24 XTXCA 17 n/a n/a DTE External
Transmit Clock
XTXCB 11 11 9 113 W n/a n/a XTXCB 11 XTXCB 35 n/a n/a DTE
DTRA 20 20 6 108 H DTR 20 DTRA 20 DTRA 12 C[A] 3 DTE Data Terminal
Ready (Control on
wire)DTRB 23 23 22 n/a n/a n/a n/a DTRB 23 DTRB 30 C[B] 10 DTE
DSRA6620107EDSR6DSRA6DSRA11n/a n/a DCE Data Set Ready
DSRB 22 22 23 n/a n/a n/a n/a DSRB 22 DSRB 29 n/a n/a DCE
Table 5-1 Serial Connector and NetPerformer Custom HD-26 Cable Set
To Next Page
Loading...
Need help?
General
