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CHAPTER 21 400 kHz I
2
C INTERFACE
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Ten Bit Address Mask Register (ITMK) Contents
Table 21.2-4 Function of Each Bit of the Ten Bit Address Mask Register (ITMK)
Bit name
Function
bit15
ENTB:
Enable ten bit
slave address bit
This bit enables the ten bit slave address (and the acknowledging upon its reception).
Write access to this bit is only possible if the interface is disabled (EN= 0 in ICCR).
"0": Ten bit address disabled
"1": Ten bit address enabled
bit14
RAL:
Received slave
address length bit
This bit indicates whether the interface was addressed as a seven or ten bit slave. It is
read only.
"0": Addressed as seven bit slave
"1": Addressed as ten bit slave
This bit can be used to determine whether the interface was addressed as a seven or ten
bit slave if both slave addresses are enabled (ENTB = 1 and ENSB = 1). Its contents is
only valid if the AAS bit in the IBSR register is "1". This bit is also reset if the interface
is disabled (EN= 0 in ICCR).
bit13 to
bit10
Undefined
These bits always return "1" during reading.
bit9 to bit0
TMK:
Ten bit slave
address mask bits
This register is used to mask the ten bit slave address of the interface. Write access to
these bits is only possible if the interface is disabled (EN= 0 in ICCR).
"0": Bit is not used in slave address comparison
"1": Bit is used in slave address comparison
This can be used to make the interface acknowledge on multiple ten bit slave addresses.
Only the bits set to "1" in this register are used in the ten bit slave address comparison.
The received slave address is written back to the ITBA register and thus may be
determined by reading the ITBA register if the AAS bit in
the IBSR register is "1".
Note:
If the address mask is changed after the interface had been enabled, the slave address
should also be set again since it could have been overwritten by a previously
received slave address.
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 ...
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 ...
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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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