417
CHAPTER 21 400 kHz I
2
C INTERFACE
bit8
INT:
Interrupt flag bit
This bit is the transfer end interrupt request flag. It is changed by the hardware and can
be cleared by the user. It always reads "1" in a Read-Modify-Write access.
Write access:
"0": Clear transfer end interrupt request flag
"1": No effect
Read access:
"0": Transfer not ended or not involved in current transfer or bus is idle
"1": Set at the end of a 1-byte data transfer or reception including the acknowledge bit
under the following conditions:
- Device is bus master.
- Device is addressed as slave.
- General call address received.
- Arbitration loss occurred.
Set at the end of an address data reception (after first byte if seven bit address received,
after second byte if ten bit address received) including the acknowledge bit if the device
is addressed as slave.
While this bit is "1" the SCL line will hold an "L" level signal. Writing "0" to this bit
clears the setting, releases the SCL line, and executes transfer of the next byte or a
repeated start or stop condition is generated. Additionally, this bit is cleared if a "1" is
written to the SCC bit or the MSS bit is being cleared.
Table 21.2-2 Function of Each Bit of the Bus Control Register (IBCR) (3/3)
Bit name
Function
Содержание MB90390 Series
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Страница 17: ...xiii APPENDIX D List of Interrupt Vectors 690 INDEX 695 ...
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Страница 132: ...104 CHAPTER 5 CLOCKS ...
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Страница 274: ...246 CHAPTER 15 WATCH TIMER ...
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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 ...
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Страница 723: ...695 INDEX The index follows on the next page This is listed in alphabetic order ...
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