386
CHAPTER 22 I
2
C
22.5.2
I
2
C Bus Status Register (IBSR0)
The IBSR0 register contains the status of the I
2
C interface.
■
I
2
C Bus Status Register (IBSR0)
Figure 22.5-4 I
2
C Bus Status Register (IBSR0)
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Initial value
BB
RSC
-
LRB
TRX
AAS
GCA
BTF
00000000
B
R/WX
R/WX
R0/WX
R/WX
R/WX
R/WX
R/WX
R/WX
AAS
Addressing detection bit
0
Not addressed in slave mode.
1
Addressed in slave mode.
RSC
Repeated start condition detection bit
0
Repeated start condition not detected
1
Repeated start condition detected with bus in use
BB
Bus busy bit
0
Bus idle
1
Bus busy
TRX
Data transfer status bit
0
Receive mode
1
Transmit mode
LRB
Acknowledge storage bit
0
Acknowledgment detected in ninth shift clock cycle.
1
Acknowledgment not detected in ninth shift clock cycle.
GCA
General call address detection bit
0
General call address (00
H
) not received in slave mode.
1
General call address (00
H
) received in slave mode.
FBT
First byte detection bit
0
Data received is not the first byte.
1
Data received is the first byte (address data)
R/WX : Read only (Readable, writting has no effect on operation)
R0/WX : Undefined bit
(Read value is "0", writting has no effect on operation)
-
: Unused
: Initial value
Address
0062
H
IBSR0
Содержание F2 MC-8FX Family
Страница 2: ......
Страница 4: ......
Страница 30: ...16 CHAPTER 1 DESCRIPTION 1 FPT 64P M23 FPT 64P M24 2 For the I O circuit type refer to 1 8 I O Circuit Type ...
Страница 34: ...20 CHAPTER 1 DESCRIPTION ...
Страница 35: ...21 CHAPTER 2 HANDLING DEVICES This chapter gives notes on using 2 1 Device Handling Precautions ...
Страница 38: ...24 CHAPTER 2 HANDLING DEVICES ...
Страница 39: ...25 CHAPTER 3 MEMORY SPACE This chapter describes memory space 3 1 Memory Space 3 2 Memory Map ...
Страница 43: ...29 CHAPTER 4 MEMORY ACCESS MODE This chapter describes the memory access mode 4 1 Memory Access Mode ...
Страница 56: ...42 CHAPTER 5 CPU ...
Страница 73: ...59 CHAPTER 6 CLOCK CONTROLLER ...
Страница 96: ...82 CHAPTER 6 CLOCK CONTROLLER ...
Страница 104: ...90 CHAPTER 7 RESET ...
Страница 105: ...91 CHAPTER 8 INTERRUPTS This chapter explains the interrupts 8 1 Interrupts ...
Страница 174: ...160 CHAPTER 10 TIMEBASE TIMER ...
Страница 184: ...170 CHAPTER 10 TIMEBASE TIMER ...
Страница 218: ...204 CHAPTER 13 WATCH PRESCALER ...
Страница 257: ...243 CHAPTER 16 8 16 BIT COMPOSITE TIMER ...
Страница 261: ...247 CHAPTER 16 8 16 BIT COMPOSITE TIMER ...
Страница 288: ...274 CHAPTER 16 8 16 BIT COMPOSITE TIMER ...
Страница 301: ...287 CHAPTER 17 16 BIT PPG TIMER ...
Страница 316: ...302 CHAPTER 17 16 BIT PPG TIMER ...
Страница 382: ...368 CHAPTER 21 UART SIO DEDICATED BAUD RATE GENERATOR ...
Страница 390: ...376 CHAPTER 22 I2C ...
Страница 395: ...381 CHAPTER 22 I2C ...
Страница 399: ...385 CHAPTER 22 I2C ...
Страница 430: ...416 CHAPTER 23 10 BIT A D CONVERTER ...
Страница 476: ...462 CHAPTER 24 LCD CONTROLLER ...
Страница 482: ...468 CHAPTER 25 LOW VOLTAGE DETECTION RESET CIRCUIT ...
Страница 494: ...480 CHAPTER 26 CLOCK SUPERVISOR ...
Страница 507: ...493 CHAPTER 27 REAL TIME CLOCK ...
Страница 523: ...509 CHAPTER 27 REAL TIME CLOCK ...
Страница 532: ...518 CHAPTER 27 REAL TIME CLOCK ...
Страница 536: ...522 CHAPTER 28 256 KBIT FLASH MEMORY ...
Страница 554: ...540 CHAPTER 28 256 KBIT FLASH MEMORY ...
Страница 564: ...550 CHAPTER 29 EXAMPLE OF SERIAL PROGRAMMING CONNECTION ...
Страница 595: ...581 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Страница 596: ...582 INDEX Index ...
Страница 597: ...583 INDEX ...
Страница 599: ...585 Pin Function Index V2 LCD power supply driving pin 2 439 V3 LCD power supply driving pin 3 439 ...
Страница 600: ...586 Pin Function Index ...
Страница 602: ......