Page 204
16. Serial Bus Interface(I2C Bus) Ver.-D (SBI)
16.5 I2C Bus Control
T
5CL8
When the AL is set to “1”, the MST and TRX are cleared to “0” and the mode is switched to a slave receiver
mode. Thus, the serial bus interface circuit stops output of clock pulses during data transfer after the AL is set
to “1”.
The AL is cleared to “0” by writing data to the SBIDBR, reading data from the SBIDBR or writing data to
the SBICRB.
Figure 16-8 Example of when a Serial Bus Interface Circuit is a Master B
16.5.11Slave address match detection monitor
In the slave mode, the AAS (Bit2 in SBISRB) is set to “1” when the received data is “GENERAL CALL” or
the received data matches the slave address setting by I2CAR with an address recognition mode (ALS = 0).
When a serial bus interface circuit operates in the free data format (ALS = 1), the AAS is set to “1” after
receiving the first 1-word of data.
The AAS is cleared to “0” by writing data to the SBIDBR or reading data from the SBIDBR.
16.5.12GENERAL CALL detection monitor
The AD0 (Bit1 in SBISRB) is set to “1” when all 8-bit received data is “0” immediately after a start condi-
tion in a slave mode. The AD0 is cleared to “0” when a start or stop condition is detected on a bus.
16.5.13Last received bit monitor
The SDA line value stored at the rising edge of the SCL line is set to the LRB (Bit0 in SBISRB). In the
acknowledge mode, immediately after an INTSBI interrupt request is generated, an acknowledge signal is read
by reading the contents of the LRB.
SCL pin
SDA pin
SCL pin
SDA pin
AL
MST
TRX
D7A D6A D5A D4A
D7B D6B
D3A D2A D1A
D6A’
D7A’
D5A’
D0A
1
2
3
4
1
2
3
4
5
6
7
8
9
1
2
3
Master A
Master B
Stop clock output
Releasing SDA pin and SCL pin to high level as losing arbitration.
5
6
7
8
9
Accessed to SBIDBR or SBICRB
INTSBI
Содержание CEM2100/00
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Страница 18: ...PCB LAYOUT TUNER BOARD BOTTOM SIDE VIEW 18 ...
Страница 19: ...PCB LAYOUT SD BOARD TOP SIDE VIEW ...
Страница 20: ...20 PCB LAYOUT CD CONNECTOR TOP SIDE VIEW ...
Страница 21: ...PCB LAYOUT ISO BOARD BOTTOM SIDE VIEW 21 ...
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Страница 126: ...Page 4 1 3 Block Diagram T5CL8 1 3 Block Diagram Figure 1 2 Block Diagram ...
Страница 130: ...Page 8 1 4 Pin Names and Functions T5CL8 ...
Страница 155: ...Page 33 T5CL8 ...
Страница 156: ...Page 34 2 Operational Description 2 3 Reset Circuit T5CL8 ...
Страница 186: ...Page 64 5 I O Ports 5 8 Port P7 P77 to P70 T5CL8 ...
Страница 194: ...Page 72 6 Watchdog Timer WDT 6 3 Address Trap T5CL8 ...
Страница 214: ...Page 92 8 16 Bit TimerCounter 1 TC1 8 3 Function T5CL8 ...
Страница 270: ...Page 148 12 Asynchronous Serial interface UART1 12 9 Status Flag T5CL8 ...
Страница 280: ...Page 158 13 Asynchronous Serial interface UART2 13 9 Status Flag T5CL8 ...
Страница 332: ...Page 210 16 Serial Bus Interface I2C Bus Ver D SBI 16 6 Data Transfer of I2C Bus T5CL8 ...
Страница 342: ...Page 220 17 10 bit AD Converter ADC 17 6 Precautions about AD Converter T5CL8 ...
Страница 354: ...Page 232 19 Flash Memory 19 4 Access to the Flash Memory Area T5CL8 ...
Страница 388: ...Page 266 21 Input Output Circuit 21 2 Input Output Ports T5CL8 ...
Страница 397: ...Page 275 T5CL8 23 Package Dimensions LQFP64 P 1010 0 50D Rev 01 Unit mm ...
Страница 398: ...Page 276 23 Package Dimensions T5CL8 ...
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Страница 428: ...TC94B14MFG 2010 01 12 28 Package LQFP80 P 1212 0 50F Weight 0 6 g Typical ...