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Chapter 50 Subclock Calibration Unit
5.Register Description
BIT[0]: INTEN - Interrupt enable
This is the interrupt enable bit corresponding to the INT bit. When this bit is set to 1 and the
INT bit is set by the hardware, the calibration module signals an interrupt to the CPU. The
INT-bit itself is not affected by the INTEN bit and is set by hardware even if interrupts are
disabled (INTEN=0).
BIT[1]: INT - Interrupt
This bit indicates the end of the calibration. When the 32KHz/100kHz timer reaches zero after
the start of calibration, the 4MHz Timer Data Register stores the last 4MHz timer value and
the INT bit is set to 1.
The read-modify-write operation to this bit results in reading 1 and writing 0 to this bit clears
this flag(INT=0). Writing 1 to this bit has no effect.
The interrupt flag INT is not reset by hardware. Therefor it must be reset by software before
starting a new calibration. Otherwise the end of the calibration process is only signalized by
the STRT bit (the INT flag stays 1 also during calibration).
BIT[4]: STRT - Calibration Start
When the STRT bit is set to 1 by the software, the calibration starts. The 32kHz/100kHz
Timer starts counting down from the value stored in the 32KHz/100kHz Timer Data Register
and the 4MHz Timer starts counting up from zero.
When the 32KHz/100kHz Timer reaches zero, this bit is reset to 0 by the hardware.
If 0 is written into this bit by the software during the calibration process, the calibration is
immediately stopped. If writing 0 by the software and reset to 0 by the hardware happens at
the same time, the hardware operation supersede the software operation. This means the
calibration is properly completed and the INT bit is set to “1”. Writing 1 to this bit during the
calibration has no effect.
0
interrupt disabled (default)
1
interrupt enabled
0
calibration ongoing / module inactive (default)
1
calibration completed
0
calibration stopped, module switched off (default)
1
start calibration
Summary of Contents for FR Family FR60 Lite
Page 2: ...FUJITSU LIMITED ...
Page 3: ...FR60 32 BIT MICROCONTROLLER MB91460 Series User s Manual ...
Page 15: ...xi ...
Page 16: ...xii ...
Page 38: ...22 Chapter 2 MB91460 Rev A Rev B Overview 4 Block Diagram ...
Page 128: ...112 Chapter 4 CPU Architecture 9 Addressing ...
Page 153: ...137 Chapter 8 Device State Transition 3 State Transition Diagram ...
Page 154: ...138 Chapter 8 Device State Transition 3 State Transition Diagram ...
Page 169: ...153 Chapter 9 Reset 10 Caution ...
Page 170: ...154 Chapter 9 Reset 10 Caution ...
Page 180: ...164 Chapter 10 Standby 7 Q A ...
Page 182: ...166 Chapter 10 Standby 8 Caution ...
Page 199: ...183 Chapter 12 Instruction Cache 2 Main body structure Figure 2 3 I Cache Address Map ...
Page 200: ...184 Chapter 12 Instruction Cache 2 Main body structure Figure 2 4 I Cacheable Area ...
Page 222: ...206 Chapter 13 Clock Control 8 Caution ...
Page 232: ...216 Chapter 14 PLL Interface 7 Caution ...
Page 236: ...220 Chapter 15 CAN Clock Prescaler 3 Registers ...
Page 288: ...272 Chapter 19 Timebase Timer 8 Caution ...
Page 314: ...298 Chapter 22 Main Oscillation Stabilisation Timer 8 Caution ...
Page 326: ...310 Chapter 23 Sub Oscillation Stabilisation Timer 8 Caution ...
Page 348: ...332 Chapter 25 External Interrupt 8 Caution ...
Page 398: ...382 Chapter 26 DMA Controller 6 DMA External Interface ...
Page 402: ...386 Chapter 27 Delayed Interrupt 8 Caution ...
Page 412: ...396 Chapter 28 Bit Search 8 Caution ...
Page 521: ...505 Chapter 30 I O Ports 3 Port Register Settings ...
Page 522: ...506 Chapter 30 I O Ports 3 Port Register Settings ...
Page 574: ...558 Chapter 31 External Bus 4 Endian and Bus Access Byte Access ...
Page 628: ...612 Chapter 31 External Bus 13 Notes on Using the External Bus Interface ...
Page 706: ...690 Chapter 33 I2C Controller 4 Programming Flow Charts ...
Page 748: ...732 Chapter 34 CAN Controller 4 CAN Application ...
Page 762: ...746 Chapter 35 Free Run Timer 8 Caution ...
Page 790: ...774 Chapter 37 Output Compare 8 Caution ...
Page 838: ...822 Chapter 39 Programmable Pulse Generator 8 Caution ...
Page 850: ...834 Chapter 40 Pulse Frequency Modulator 4 PFM Operation and Setting ...
Page 886: ...870 Chapter 42 Sound Generator 3 Registers ...
Page 900: ...884 Chapter 43 Stepper Motor Controller 4 Caution ...
Page 939: ...923 Chapter 47 LCD Controller 3 Configuration Figure 3 2 Register List ...
Page 943: ...927 Chapter 47 LCD Controller 4 Registers Correspondence between VRAM and Common Segment Pins ...
Page 964: ...948 Chapter 48 Clock Monitor 8 Caution ...
Page 994: ...978 Chapter 51 Low Voltage Reset Interrupt 3 Registers ...
Page 998: ...982 Chapter 52 Regulator Control 3 Registers ...
Page 1008: ...992 Chapter 53 Fixed Mode Reset Vector BOOT ROM 5 Bootloader Update Strategy ...
Page 1024: ...1008 Chapter 54 Flash Memory 8 Caution ...
Page 1032: ...1016 Chapter 55 Flash Security 4 Register ...
Page 1034: ...1018 Chapter 56 Electrical Specification ...
Page 1035: ...FR60 MB91460 Series Hardware Manual European Microcontroller Design Centre Author MBo ...
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