SeaLevel ACB-ULTRA.LPCIe User Manual page 8

RS-232 Signals
When in External Sync mode, the external sync signal is fed into DCD.
RS-485 or RS-485T
© Sealevel Systems, Inc. 5104e & 5104es Manual | SL9273 8/2021
Pin # Signal
2 TD
3 RD
4 RTS Request To Send
5 CTS
6 DSR Data Set Ready
7 GND
8 DCD Data Carrier Detect *
15 TXC Transmit Clock
17 RXC
18 LL Local Loopback
20 DTR Data Terminal Ready
21 RL Remote Loopback
22 RI
24 TSET Transmit Signal Element Timing
25 TM
Pin # Signal
2 TDA TX–
3 RDA RX–
7 GND
9 RXCB RXC+
11 TSETB TSET+
12 TXCB TXC+
14 TDB TX+
15 TXCA TXC–
16 RDB RX+
17 RXCA RXC–
18 LL
20 DTRA DTR–
21 RL
23 DTRB DTR+
24 TSETA TSET–
Name Mode
Transmit Data Output
Receive Data Input
Output
Clear To Send Input
Input
Ground
Input
Input
Receive Clock Input
Output
Output
Output
Ring Indicator Input
Output
Test Mode Input
Name
Transmit Negative
Receive Negative
Ground
Receive Clock Positive
Transmit Signal Element Timing +
Transmit Clock Positive
Transmit Positive
Transmit Clock Negative
Receive Positive
Receive Clock Negative
Local Loopback
Data Terminal Ready Negative
Remote Loopback
Data Terminal Ready Positive
Transmit Signal Element Timing –
Mode
Output
Input
Input
Output
Input
Output
Input
Input
Input
Output
Output
Output
Output
Output
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