Toshiba TLCS-870/C1 Series, Manual

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18. Serial Bus Interface (SBI)
18.3 Control
TMP89FM42
RA001
18.3 Control
The following registers are used to control the serial bus interface and monitor the operation status.
• Serial bus interface control register 1 (SBI0CR1)
• Serial bus interface control register 2 (SBI0CR2)
• Serial bus interface status register 2 (SBI0SR2)
• Serial bus interface data buffer register (SBI0DBR)
• I
2
C bus address register (I2C0AR)
In addition, the serial bus interface has low power consumption registers that save power when the serial bus inter-
face is not being used.
Note 1: When SBI0EN is cleared to "0", the clock supply to the serial bus interface is stopped. At this time, the data written
to the serial bus interface control registers is invalid. When the serial bus interface is used, set SBI0EN to "1" and
then write the data to the serial bus interface control registers.
Low power consumption register 1
POFFCR1 7 6 5 4 3 2 1 0
(0x0F75) Bit Symbol - - - SBI0EN - - UART1EN UART0EN
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
After reset 0 0 0 0 0 0 0 0
SBI0EN I2C0 control
0
1
Disable
Enable
UART1EN UART1 control
0
1
Disable
Enable
UART0EN UART0 control
0
1
Disable
Enable
Serial bus interface control register 1
SBI0CR1
(0x0022)
7 6 5 4 3 2 1 0
Bit Symbol BC ACK NOACK SCK
Read/Write R/W R/W R/W R/W
After reset 0 0 0 0 0 0 0 0