Serial Data Register 0/1 (Sdr0/Sdr1) - Fujitsu MB90480 Series Hardware Manual

CHAPTER 18 EXPANDED I/O SERIAL INTERFACE

18.3.2 Serial Data Register 0/1 (SDR0/SDR1)

This section describes the configuration and functions of the serial data register 0/1
(SDR0/SDR1).
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Serial data register 0/1 (SDR0/SD1)
The bit configuration of the serial data register 0/1 (SDR0/SDR1) is illustrated below.
SDR 0/1
ch.0 address: 000028
ch.1 00002C
The serial data register 0/1 (SDR0/SDR1) stores transfer data of the serial I/O unit.
The SDR cannot be written or read during data transfer.
394
7 6 5
D7 D6 D5 D4
H
R/W R/W R/W R/W R/W
H
4 3 2 1
D3 D2 D1
R/W R/W R/W
0 Initial value
D0 XXXXXXXX
B
(Undefined)