User's Manual

8XC196NP, 80C196NU USER’S MANUAL

C-40

SBUF_TX

Address:

Reset State:

1FBAH

00H

The serial port transmit buffer (SBUF_TX) register contains data that is ready for transmission. In

modes 1, 2, and 3, writing to SBUF_TX starts a transmission. In mode 0, writing to SBUF_TX starts a

transmission only if the receiver is disabled (SP_CON.3=0).

7 0

Data to Transmit

Bit

Number

Function

7:0 Data to Transmit

This register contains a byte of data to be transmitted by the serial port.