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18. Serial Bus Interface (SBI)
18.3 Control
TMP89FM42
RA001
Note 1: When SBI0CR2<SBIM> is "0", no value can be written to SBI0CR2 except SBI0CR2<SBIM>. Before writing values to
SBI0CR2, write "1" to SBI0CR2<SBIM> to activate the serial bus interface mode.
Note 2: Don't change the contents of the registers, except SBI0CR2<SWRST>, when the start condition is generated, the stop
condition is generated or the data transfer is in progress. Write data to the registers before the start condition is generated
or during the period from when an interrupt request is generated for stopping the data transfer until it is released.
Note 3: Make sure that the port is in a high state before switching the port mode to the serial bus interface mode. Make sure that
the bus is free before switching the serial bus interface mode to the port mode.
Note 4: SBI0CR2 is a write-only register, and must not be accessed by using a read-modify-write instruction, such as a bit opera-
tion.
Note 5: After a software reset is generated, all the bits of SBI0CR2 register except SBI0CR2<SBIM> and the SBI0CR1, I2C0AR
and SBI0SR2 registers are initialized.
Note 6: When the operation is switched to STOP, IDLE0 or SLOW mode, the SBI0CR2 register, except SBI0CR2<SBIM>, and the
SBI0CR1, I2C0AR and SBI0DBR registers are initialized.
Note 1: * : Unstable
Note 2: When SBI0CR2<SBIM> becomes "0", SBI0SR is initialized.
Note 3: After a software reset is generated, all the bits of the SBI0CR2 register except SBI0CR2<SBIM> and the SBI0CR1,
I2C0AR and SBI0SR2 registers are initialized.
Note 4: When the operation is switched to STOP, IDLE0 or SLOW mode, the SBI0CR2 register, except SBI0CR2<SBIM>, and the
SBI0CR1, I2C0AR and SBI0DBR registers are initialized.
MST
Master/slave selection
0: Slave
1: Master
TRX
Transmitter/receiver selection
0: Receiver
1: Transmitter
BB
Start/stop generation
0: Generate the stop condition (when MST, TRX and PIN are "1")
1: Generate the start condition (when MST, TRX and PIN are "1")
PIN
Cancel interrupt service request
0: - (Cannot clear this bit by the software)
1: Cancel interrupt service request
SBIM
Serial bus interface operation
mode register
0: Port mode
1: Serial bus interface mode
SWRST
Software reset start bit
The software reset starts by first writing "10" and next writing "01"
Serial bus interface status register 2
SBI0SR2
(0x0023)
7
6
5
4
3
2
1
0
Bit Symbol
MST
TRX
BB
PIN
AL
AAS
AD0
LRB
Read/Write
R
R
R
R
R
R
R
R
After reset
0
0
0
1
0
0
0
*
MST
Master/slave selection status
monitor
0: Slave
1: Master
TRX
Transmitter/receiver selection
status monitor
0: Receiver
1: Transmitter
BB
Bus status monitor
0: Bus free
1: Bus busy
PIN
Interrupt service requests sta-
tus monitor
0: Requesting interrupt service
1: Releasing interrupt service request
AL
Arbitration lost detection monitor
0: -
1: Arbitration lost detected
AAS
Slave address match detection
monitor
0: -
1: Detect slave address match or "GENERAL CALL"
AD0
"GENERAL CALL" detection
monitor
0: -
1: Detect "GENERAL CALL"
LRB
Last received bit monitor
0: Last received bit is "0"
1: Last received bit is "1"
Summary of Contents for TLCS-870/C1 Series
Page 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Page 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Page 4: ......
Page 14: ......
Page 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Page 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Page 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Page 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Page 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Page 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Page 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Page 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Page 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Page 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Page 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Page 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Page 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Page 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Page 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Page 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Page 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Page 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Page 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Page 406: ...26 Package Dimensions TMP89FM42 ...
Page 408: ......