tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 278

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

18.3 Control
18. Serial Bus Interface (SBI)
RA001
18.3 Control
Low power consumption register 1
Serial bus interface control register 1
POFFCR1
SBI0CR1
(0x0F75)
(0x0022)
face is not being used.
The following registers are used to control the serial bus interface and monitor the operation status.
In addition, the serial bus interface has low power consumption registers that save power when the serial bus inter-
Note 1: When SBI0EN is cleared to "0", the clock supply to the serial bus interface is stopped. At this time, the data written
• 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
UART1EN
UART0EN
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.
C bus address register (I2C0AR)
SBI0EN
Read/Write
Read/Write
Bit Symbol
Bit Symbol
After reset
After reset
I2C0 control
UART1 control
UART0 control
R/W
7
0
7
0
-
R/W
R/W
BC
6
0
6
0
-
R/W
5
0
5
0
-
Page 264
0
1
0
1
0
1
Disable
Enable
Disable
Enable
Disable
Enable
SBI0EN
ACK
R/W
R/W
4
0
4
0
NOACK
R/W
R/W
3
0
3
0
-
R/W
2
0
2
0
-
UART1EN
R/W
SCK
R/W
1
0
1
0
TMP89FM42
UART0EN
R/W
0
0
0
0