Serial I/O Registers - Fujitsu MB90390 Series Hardware Manual

22.2

Serial I/O Registers

The serial I/O has the following two registers:
• Serial mode control status register (SMCS)
• Serial data register (SDR)
■ Serial I/O Registers
bit
Address : 00002D
H
bit
Address : 00002C
H
bit
Address : 00002E
H
15 14 13 12
SMD2 SMD1 SMD0 SIE
7 6 5 4
7 6 5 4
D7 D6 D5 D4
11 10 9
SIR BUSY STOP STRT
3 2 1
MODE BDS SOE SCOE
3 2 1
D3 D2 D1 D0
CHAPTER 22 SERIAL I/O
8
Serial mode control
status register (SMCS)
0
0
Serial data register (SDR)
439