Toshiba TLCS-900/L1 Series Manual page 167

(14) Software reset function
The software reset function is used to initialize the SBI circuit, when SBI is locked
by external noises, etc.
An internal reset signal pulse can be generated by setting SBI0CR2<SWRST1:0> to
10 and 01. This initializes the SBI circuit internally. All command (except
SBI0CR2<SBIM1:0>) registers and status registers are initialized as well.
SBI0CR1<SWRMON> is automatically set to "1" after the SBI circuit has been
initialized.
(15) Serial bus interface data buffer register (SBI0DBR)
The received data can be read and transferred data can be written by reading or
writing the SBI0DBR.
In the master mode, after the start condition is generated the slave address and the
direction bit are set in this register.
(16) I C bus address register (I2C0AR)
2
I2C0AR<SA6:0> is used to set the slave address when the TMP91C824 functions as
a slave device.
The slave address output from the master device is recognized by setting the
I2C0AR<ALS> to 0. The data format is the addressing format. When the slave
address is not recognized at the <ALS> = 1, the data format is the free data format.
(17) Baud rate register (SBI0BR1)
Write 1 to SBI0BR1<P4EN> before operation commences.
(18) Setting register for IDLE2 mode operation (SBI0BR0)
SBI0BR0<I2SBI0> is the register setting operation/stop during IDLE2 mode.
Therefore, setting <I2SBI0> is necessary before the HALT instruction is executed.
91C824-165
TMP91C824
2008-02-20