ÛZIATECH
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8. SERIAL CONTROLLER
The ZT 8907 includes two serial ports that are compatible with the industry standard
16C550. The interface for each serial port is implemented with a 5 V charge pump
technology to eliminate the need for a ±12 V supply. The serial ports include a complete
set of handshaking and modem control signals, maskable interrupt generation, and data
transfer rates up to 115.2 Kbaud. The major features of the serial ports are listed below.
•
Loopback diagnostics
•
Does not require ±12 V
•
Baud rates up to 115 Kbaud
•
Two independent RS-232 channels
•
Polled and interrupt operation
The serial ports are configured as DTE and are available through 10-pin frontplane
connectors J3 (COM2) and J4 (COM1). Optional cables interface the frontplane
connectors to 9-pin D-shell connectors. Ziatech also offers a ZT 2592 RS-232-to-
RS-485 interface conversion frontplate for the ZT 260/ZT 310 enclosures. The ZT 2592
is also offered in an optically isolated version.
Note:
Pins 1 through 9 of J3 and J4 are organized for direct ribbon cable connection to
a 9-pin D-shell connector. Pin 10 is a 5 V output.