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TMP92CM22
2007-02-16
92CM22-191
Serial Bus Interface 0 Control Register 2
7 6 5 4 3 2 1 0
Bit symbol SBIM1 SBIM0 − − SBI0CR2
(1243H)
Read/Write W
After reset 0 0 0 0
Read-
modify-write
instruction is
prohibited.
Function
Serial bus interface
operation mode selection
00: Port mode
01: SIO mode
10: I
2
C bus mode
11: (Reserved)
(Note 2) (Note 2)
00 Port mode (Serial bus interface output disabled)
01 Clocked-synchronous 8-bit SIO mode
10 I
2
C bus mode
11 (Reserved)
Serial Bus Interface 0 Status Register
7 6 5 4 3 2 1 0
Bit symbol SIOF SEF SBI0SR
(1243H)
Read/Write R
After reset 0 0
Function Serial
transfer
operation
status
monitor
Shift
operation
status
monitor
0 Transfer terminated 0 Shift operation terminated
1 Transfer in progress 1 Shift operation in progress
Serial Bus Interface 0 Baud Rate Register 0
7 6 5 4 3 2 1 0
Bit symbol − − SBI0BR0
(1244H)
Read/Write W R/W
After reset 0 0
Function Always write
“0”.
Always
write “0”.
Note: Clocked-syncronous mode cannot operate in IDEL2 mode.
Serial Bus Interface 0 Baud Rate Register 1
7 6 5 4 3 2 1 0
Bit symbol P4EN − SBI0BR1
(1245H)
Read/Write W
After reset 0 0
Function
Internal
clock
0: Stop
1: Operate
Always write
“0”.
0 Stop
1 Operate
Figure 3.10.21 Register for the SIO Mode
Serial bus interface operation mode selection
Note 1: Set the SBI0CR1<BC2:0> to “000” before switching
to a clocked-synchronous 8-bit SIO mode.
Note 2: Please always write “00” to SBICR2<1:0>.
Serial transfer operating status monitor Shift operation status monitor
Baud rate clock control
Read-
modify-write
instruction is
prohibited.
Read-
modify-write
instruction is
prohibited.