TMP91C824
91C824-170
Serial Bus Interface Control Register 2
7
6
5
4
3
2
1
0
Bit symbol
SBIM1
SBIM0
Read/Write
W
After Reset
0
0
Function
Serial bus interface operation
mode selection
00: Port mode
01: SIO mode
10: I
2
C bus mode
11: (reserved)
Serial bus interface operation mode selection
00 Port Mode (serial bus interface output disabled)
01 Clocked-Synchronous 8-Bit SIO Mode
10 I
2
C Bus Mode
11 (reserved)
Note:
Set the SBI0CR1<BC2 to 0> “000” before switching to a clocked-synchronous 8-bit SIO
mode.
Serial Bus Interface Status Register
7
6
5
4
3
2
1
0
bit Symbol
SIOF
SEF
Read/Write
R
After reset
0
0
Function
Serial transfer
operation
status monitor
Shift operation
status monitor
Shift operation status monitor
0
Shift operation terminated
1
Shift operation in progress
Serial transfer operating status monitor
0
Transfer terminated
1
Transfer in progress
SBI0CR2
(0243H)
SBI0SR
(0243H)
Prohibit
Read-
modify-write
Figure 3.10.21
Registers for the SIO Mode