Serial Data Register (Sdr) - Fujitsu F2MC-16LX Hardware Manual

CHAPTER 20 EXTENDED I/O SERIAL INTERFACE
20.2.2

Serial Data Register (SDR)

The configuration and functions of Serial data register (SDR) are described.
Serial Data Register (SDR)
Figure 20.2-3 shows the bit configuration of the serial data register (SDR).
SDR
Address
: 00005A
R/W : Readable/Writable
X : Indeterminate
The serial data register (SDR) is a serial data register to hold transfer data of the serial I/O.
Both writing and reading to and from SDR during transfer are disabled.
466
Figure 20.2-3 Bit Configuration of Serial Data Register (SDR)
7 6 5
D7
D6 D5
H
(R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W)
4 3 2 1
D1
D4 D3 D2
0
Serial data register
D0
XXXXXXXX
Initial value
B