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Chapter 33 I2C Controller
2.I2C Interface Registers
[bit 14] BEIE (Bus Error Interrupt Enable)
This bit enables the bus error interrupt. It can only be changed by the user.
Setting this bit to ‘1’ enables MCU interrupt generation when the BER bit is set to ‘1’.
[bit 13] SCC (Start Condition Continue)
This bit is used to generate a repeated start condition. It is write only - it always reads ‘0’.
A repeated start condition is generated if a ‘1’ is written to this bit while an interrupt in master mode (MSS=‘1’
and INT=‘1’) and the INT bit is cleared automatically.
[bit 12] MSS (Master Slave Select)
This is the master/slave mode selection bit. It can only be set by the user, but it can be cleared by the user
and the hardware.
It is cleared if an arbitration loss event occurs during master sending.
If a ‘0’ is written to it during a master interrupt (MSS=‘1’ and INT=‘1’), the INT bit is cleared automatically, a
stop condition will be generated and the data transfer ends. Note that the MSS bit is reset immediately, the
generation of the stop condition can be checked by polling the BB bit in the IBSR0 register.
If a ‘1’ is written to it while the bus is idle (MSS=‘0’ and BB=‘0’), a start condition is generated and the contents
of the IDAR0 register (which should be address data) is sent.
If a ‘1’ is written to the MSS bit while the bus is in use (BB=‘1’ and TRX=‘0’ in IBSR2; MSS=‘0’ in IBCR0), the
interface waits until the bus is free and then starts sending.
If the interface is addressed as slave with write access (data reception) in the meantime, it will start sending
after the transfer ended and the bus is free again. If the interface is sending data as slave in the meantime
(AAS=‘1’ and TRX=‘1’ in IBSR0), it will not start sending data if the bus is free again. It is important to check
whether the interface was addressed as slave (AAS=‘1’ in IBSR0), sent the data byte successfully (MSS=‘1’ in
IBCR0) or failed to send the data byte (AL=‘1’ in IBSR0) at the next interrupt!
[bit 11] ACK (ACKnowledge)
This is the acknowledge generation on data byte reception enable bit. It can only be changed by the user.
0
Bus error interrupt disabled.
1
Bus error interrupt enabled.
0
No effect.
1
Generate repeated start condition during master transfer.
0
Go to slave mode.
1
Go to master mode, generate start condition and send address data byte in
IDAR0 register.
0
The interface will not acknowledge on data byte reception.
1
The interface will acknowledge on data byte reception.
Содержание FR Family FR60 Lite
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Страница 3: ...FR60 32 BIT MICROCONTROLLER MB91460 Series User s Manual ...
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Страница 128: ...112 Chapter 4 CPU Architecture 9 Addressing ...
Страница 153: ...137 Chapter 8 Device State Transition 3 State Transition Diagram ...
Страница 154: ...138 Chapter 8 Device State Transition 3 State Transition Diagram ...
Страница 169: ...153 Chapter 9 Reset 10 Caution ...
Страница 170: ...154 Chapter 9 Reset 10 Caution ...
Страница 180: ...164 Chapter 10 Standby 7 Q A ...
Страница 182: ...166 Chapter 10 Standby 8 Caution ...
Страница 199: ...183 Chapter 12 Instruction Cache 2 Main body structure Figure 2 3 I Cache Address Map ...
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Страница 222: ...206 Chapter 13 Clock Control 8 Caution ...
Страница 232: ...216 Chapter 14 PLL Interface 7 Caution ...
Страница 236: ...220 Chapter 15 CAN Clock Prescaler 3 Registers ...
Страница 288: ...272 Chapter 19 Timebase Timer 8 Caution ...
Страница 314: ...298 Chapter 22 Main Oscillation Stabilisation Timer 8 Caution ...
Страница 326: ...310 Chapter 23 Sub Oscillation Stabilisation Timer 8 Caution ...
Страница 348: ...332 Chapter 25 External Interrupt 8 Caution ...
Страница 398: ...382 Chapter 26 DMA Controller 6 DMA External Interface ...
Страница 402: ...386 Chapter 27 Delayed Interrupt 8 Caution ...
Страница 412: ...396 Chapter 28 Bit Search 8 Caution ...
Страница 521: ...505 Chapter 30 I O Ports 3 Port Register Settings ...
Страница 522: ...506 Chapter 30 I O Ports 3 Port Register Settings ...
Страница 549: ...533 Chapter 31 External Bus 2 External Bus Interface Registers is set to the high impedance state ...
Страница 574: ...558 Chapter 31 External Bus 4 Endian and Bus Access Byte Access ...
Страница 628: ...612 Chapter 31 External Bus 13 Notes on Using the External Bus Interface ...
Страница 706: ...690 Chapter 33 I2C Controller 4 Programming Flow Charts ...
Страница 748: ...732 Chapter 34 CAN Controller 4 CAN Application ...
Страница 762: ...746 Chapter 35 Free Run Timer 8 Caution ...
Страница 790: ...774 Chapter 37 Output Compare 8 Caution ...
Страница 838: ...822 Chapter 39 Programmable Pulse Generator 8 Caution ...
Страница 850: ...834 Chapter 40 Pulse Frequency Modulator 4 PFM Operation and Setting ...
Страница 886: ...870 Chapter 42 Sound Generator 3 Registers ...
Страница 900: ...884 Chapter 43 Stepper Motor Controller 4 Caution ...
Страница 939: ...923 Chapter 47 LCD Controller 3 Configuration Figure 3 2 Register List ...
Страница 943: ...927 Chapter 47 LCD Controller 4 Registers Correspondence between VRAM and Common Segment Pins ...
Страница 964: ...948 Chapter 48 Clock Monitor 8 Caution ...
Страница 994: ...978 Chapter 51 Low Voltage Reset Interrupt 3 Registers ...
Страница 998: ...982 Chapter 52 Regulator Control 3 Registers ...
Страница 1008: ...992 Chapter 53 Fixed Mode Reset Vector BOOT ROM 5 Bootloader Update Strategy ...
Страница 1024: ...1008 Chapter 54 Flash Memory 8 Caution ...
Страница 1032: ...1016 Chapter 55 Flash Security 4 Register ...
Страница 1034: ...1018 Chapter 56 Electrical Specification ...
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