SCC68692 datasheet(13/30 Pages) PHILIPS

13 / 30 page

Philips Semiconductors

Product specification

SCC68692

Dual asynchronous receiver/transmitter (DUART)

1998 Sep 04

2. Enable transmitter, if not already enabled

3. Assert RTSN via command

4. Send message

5. After the last character of the message is loaded to the THR,

disable the transmitter. (If the transmitter is underrun, a special

case exists. See note below.)

6. The last character will be transmitted and the RTSN will be reset

one bit time after the last stop bit is sent.

NOTE: The transmitter is in an underrun condition when both the

TxRDY and the TxEMT bits are set. This condition also exists

immediately after the transmitter is enabled from the disabled or

reset state. When using the above procedure with the transmitter in

the underrun condition, the issuing of the transmitter disable must be

delayed from the loading of a single, or last, character until the

TxRDY becomes active again after the character is loaded.

SCC68692 Datasheet(PDF) 13 Page - NXP Semiconductors