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18. Serial Bus Interface (SBI)
18.4 Functions
TMP89FM42
RA001
18.4.2 Selecting the slave address match detection and the GENERAL CALL detection
SBI0CR1<NOACK> enables and disables the slave address match detection and the GENERAL CALL
detection in the slave mode.
Clearing SBI0CR1<NOACK> to "0" enables the slave address match detection and the GENERAL CALL
detection.
Setting SBI0CR1<NOACK> to "1" disables the subsequent slave address match and GENERAL CALL
detections. The slave addresses and "GENERAL CALL" sent from the master are ignored. No acknowledge-
ment is returned and no interrupt request is generated.
In the master mode, SBI0CR1<NOACK> is ignored and has no influence on the operation.
Note:If SBI0CR1<NOACK> is cleared to "0" during data transfer in the slave mode, it remains at "1" and returns an
acknowledge signal of data transfer.
18.4.3 Selecting the number of clocks for data transfer and selecting the acknowledge-
ment or non-acknowledgment mode
1-word data transfer consists of data and an acknowledge signal. When the data transfer is finished, an inter-
rupt request is generated.
SBI0CR1<BC> is used to select the number of bits of data to be transmitted/received subsequently.
The acknowledgment mode is activated by setting SBI0CR1<ACK> to "1".
The master device generates the clocks for an acknowledge signal and outputs an acknowledge signal in the
receiver mode. The slave device counts the clocks for an acknowledge signal and outputs an acknowledge sig-
nal in the receiver mode.
The non-acknowledgment mode is activated by setting SBI0CR1<ACK> to "0".
The master device does not generate the clocks for an acknowledge signal. The slave device does not count
the clocks for an acknowledge signal.
18.4.3.1 Number of clocks for data transfer
The number of clocks for data transfer is set by using SBI0CR1<BC> and SBI0CR1<ACK>.
The acknowledgment mode is activated by setting SBI0CR1<ACK> to "1".
In the acknowledgment mode, the master device generates the clocks that correspond to the number of
data bits, generates the clocks for an acknowledge signal, and generates an interrupt request.
The slave device counts the clocks that correspond to the data bits, counts the clocks for an acknowl-
edge signal, and generates an interrupt request.
The non-acknowledgment mode is activated by setting SBI0CR1<ACK> to "0".
In the non-acknowledgment mode, the master device generates the clocks that correspond to the number
of data bits, and generates an interrupt request.
The slave device counts the clocks that correspond to the data bits, and generates an interrupt request.
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: ......