425
CHAPTER 21 400 kHz I
2
C INTERFACE
21.2.5
I
2
C Seven Bit Slave Address Register (ISBA)
This register designates the seven bit slave address.
■
I
2
C Seven Bit Slave Address Register
Write access to this register is only possible if the interface is disabled (EN= 0 in ICCR).
■
I
2
C Seven Bit Slave Address Register Contents
7
6
5
4
3
2
1
0
Initial value
0 0 0 0 0 0 0 0
B
- R/W R/W R/W
R/W
R/W
R/W
R/W
H
0035A6
ISBA
-
SA6 SA5 SA4 SA3 SA2 SA1 SA0
R/
-
:
Undefined
W
:
Readable and
w
ritable
Address:
bit
Table 21.2-5 Function of Each Bit of the I
2
C Seven Bit Slave Address Register
Bit name
Function
bit7
Undefined
This bit always returns "0" during reading.
bit6 to bit0
SA6 to SA0:
Seven bit slave
address bits
When address data is received in slave mode, it is compared to the ISBA register if the
seven bit address is enabled (ENSB = 1 in the ISMK register). If a match is detected, an
acknowledge signal is sent to the master device and the AAS bit is set.
All bits of the slave address may be masked using the ISMK register. The received
seven bit slave address is written back to the ISBA register, it is only valid while the
AAS bit in the IBSR register is "1".
The interface does not compare the contents of this register to the incoming data if a ten
bit header or a general call is received.
Содержание MB90390 Series
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Страница 17: ...xiii APPENDIX D List of Interrupt Vectors 690 INDEX 695 ...
Страница 18: ...xiv ...
Страница 132: ...104 CHAPTER 5 CLOCKS ...
Страница 152: ...124 CHAPTER 6 CLOCK MODULATOR ...
Страница 210: ...182 CHAPTER 11 TIME BASE TIMER ...
Страница 218: ...190 CHAPTER 12 WATCHDOG TIMER ...
Страница 264: ...236 CHAPTER 14 16 BIT RELOAD TIMER WITH EVENT COUNT FUNCTION ...
Страница 274: ...246 CHAPTER 15 WATCH TIMER ...
Страница 306: ...278 CHAPTER 17 DTP EXTERNAL INTERRUPTS ...
Страница 338: ...310 CHAPTER 18 8 10 BIT A D CONVERTER ...
Страница 364: ...336 CHAPTER 19 UART0 UART1 ...
Страница 398: ...370 CHAPTER 20 UART2 UART3 Figure 20 5 2 ORE Set Timing Receive data RDRF ORE ...
Страница 432: ...404 CHAPTER 20 UART2 UART3 ...
Страница 482: ...454 CHAPTER 22 SERIAL I O ...
Страница 560: ...532 CHAPTER 24 STEPPING MOTOR CONTROLLER ...
Страница 582: ...554 CHAPTER 27 ROM MIRRORING MODULE ...
Страница 632: ...604 CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION ...
Страница 722: ...694 APPENDIX ...
Страница 723: ...695 INDEX The index follows on the next page This is listed in alphabetic order ...
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