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Chapter 4: Technical Description
4. Technical Description
The IC162A uses 16 USB UARTs. These chips feature programmable baud rate,
data format, 128-byte dual-port TX buffer, and 384-byte dual-port RX
buffer. The RS-232 transceivers support data rates up to 115.2 kbps and the
RS-485 transceivers support data rates up to 921.6 kbps.
4.1 Connector Pin Assignments (RJ-45)
Table 4-1. RJ-45 connector pin assignments for RS-232 and RS-485.
Pin Number Component Description Mode
1 D+ RS-485 Data +
2 RTS Request to Send Output
3 TX Transmit Data Output
4 GND Ground
5 NC Not connected
6 RX Receive Data Input
7 CTS Clear to Send Input
8 D- RS-485 Data -
NOTE: DCD, DSR, and RI are inputs that are not brought out on the RJ-45
connector. DSR and DCD are biased active and RI is biased inactive.
Figure 4-1. RS-232 pinning. Figure 4-2. RS-485 pinning.
