Toshiba TLCS-900/L1 Series Manual page 156

3.10 Serial Bus Interface (SBI)
The TMP91C824FG has a 1-channel serial bus interface which employs a clocked-
synchronous 8-bit SIO mode and an I
The serial bus interface is connected to an external device through P71 (SDA) and P72
(SCL) in the I C bus mode; and through P70 (SCK), P71 (SO) and P72 (SI) in the clocked-
2
synchronous 8-bit SIO mode.
Each pin is specified as follows.
2
I C bus mode
Clocked synchronous
8-bit SIO mode
X: Don't care
3.10.1 Configuration
SIO
clock
control
φT
Divider
2
I C bus
clock sync
+
Noise
canceller control
SBI0CR2/
SBI0SR
SBI control register 2/
SBI status register
C bus mode.
2
P7ODE<ODE72:71>
11
XX
INTSBI interrupt request
Transfer
control
circuit
Shift
register
I2C0AR SBI0DBR
2
I C bus SBI data
address register buffer register
Figure 3.10.1 Serial Bus Interface (SBI)
91C824-154
P7CR<P72C:70C> P7FC<P72F:70F>
11X
011
010
SIO
data control
2
I C bus
Noise
data control
canceller
SBI0CR1 SBI0BR0, 1
SBI control SBI baud rate
register 1 register 0, 1
TMP91C824
11X
111
SCL
SCK
P70
(SCK)
Input/
Output
control
P71
SO
(SO/SDA)
SI
P72
(SI/SCL)
SDA
2008-02-20