TMP91C824
91C824-159
2008-02-20
Serial Bus Interface Baud Rate Regster 0
7 6 5 4 3 2 1 0
Bit symbol
−
I2SBI0
Read/Write
W
R/W
After
reset
0
0
Function Always
write 0
IDLE2
0: Stop
1: Run
Operation during IDLE 2 mode
0
Stop
1
Operation
Serial Bus Interface Baud Rate Register 1
7 6 5 4 3 2 1 0
Bit symbol
P4EN
−
Read/Write
W
W
After
reset
0
0
Function Internal
clock
0: Stop
1: Operate
Always
write 0
Baud rate clock control
0
Stop
1
Operate
Sirial Bus Interface Data Buffer Register
7 6 5 4 3 2 1 0
Bit
symbol
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Read/Write R
(Received)/W
(Transfer)
After reset
Undefined
Note 1: When writing transmitted data, start from the MSB (Bit7). Receiving data is placed from LSB (Bit0).
Note 2: SBIDBR can’t be read the written data. Therefore read-modify-write instruction (e.g., “BIT” instruction) is
prohibitted.
Note 3: Written data in SBI0DBR is cleared by INTSBI signal.
I
2
C Bus Address Register
7 6 5 4 3 2 1 0
Bit
symbol SA6 SA5 SA4 SA3 SA2 SA1 SA0 ALS
Read/Write W
After
reset
0 0 0 0 0 0 0 0
Function
Slave address selection for when device is operating as slave device
Address
recognition
mode
specification
Address recognition mode specification
0
Slave address recognition
1
Non slave address recognition
Figure 3.10.6 Registers for the I
2
C Bus Mode
SBI0BR0
(0244H)
SBI0DBR
(0241H)
I2C0AR
(0242H)
Prohibit
read-
modify-
write
Prohibit
read-
modify-
write
SBI0BR1
(0245H)
Prohibit
read-
modify-
write
Prohibit
read-
modify-
write