10
2-CHANNEL ASYNC TDM
2. Introduction
The 2-Channel Async TDM is a full-duplex,
character-interleaved time-division multiplexor,
enabling two asynchronous terminals to share one
asynchronous modem or a multiplexor port. Its two
async sub-channels operate at the same data rate,
selectable up to 9600 bps. The main channel
operates at twice that rate—up to 19200 bps.
The 2-Channel Async TDM is compatible with
async character formats using 5, 6, 7, or 8 data bits.
Both sub-channels must use the same number of
data bits and the same total number of bits. The
async character format should have 1 parity bit and 1
or 2 stop bits. If the parity bit is not generated by the
DTE, the characters must have 2 stop bits. Parity of
each sub-channel can be independently set to odd or
even.
2.1 Features
• Full-duplex TDM
• Selectable data rates from 150 bps to
9600 bps
• No AC power required
