TCC720 Datasheet, PDF (36/143 Pages) List of Unclassifed Manufacturers – 32-bit RISC Microprocessor For Digital Media Player

TCC720
INTERRUPT CONTROLLER
32-bit RISC Microprocessor for Digital Media Player
Dec. 16. 2002
Preliminary Spec 0.51
E1 _[1]
E0 _[0]
External interrupt request 1 control
External interrupt request 0 control
Clear Interrupt Request Register (CREQ)
0x80000104
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
-
- DMA LCD CDIF - GS UB UT TC I2T I2R E3 E2 E1 E0
*) When writing “1” to each field, the interrupt request flag of corresponding interrupt is cleared.
Interrupt Request Register (IREQ)
0x80000108
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
-
- DMA LCD CDIF - GS UB UT TC I2T I2R E3 E2 E1 E0
*) When each field is “1”, the corresponding interrupt has been requested and not cleared.
IRQ Interrupt Select Register (IRQSEL)
0x8000010C
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
-
- DMA LCD CDIF - GS UB UT TC I2T I2R E3 E2 E1 E0
*) When each field is “1”, the corresponding interrupt is considered as IRQ interrupt, otherwise as FIQ
interrupt.
External Interrupt Configuration Register (ICFG)
15 14 13 12 11 10 9 8 7
FE3 DTYPE3 FT3 FE2 DTYPE2 FT2 FE1
65
DTYPE1
43
FT1 FE0
0x80000110
210
DTYPE0 FT0
FE3~FE0
Filter Enable
0
Noise filter is enabled (in case of DTYPEn != 3)
1
Noise filter is disabled (in case of DTYPEn != 3)
*) If DTYPEn == 3, noise filter is always enabled, and this field sets which level generates the interrupt. If it
is set to 1, level high triggers interrupt, and if it is set to 0, level low triggers interrupt.
DTYPE3~0
0
1
2
3
Detection Type
Falling edge triggered external interrupt
Rising edge triggered external interrupt
Both edge triggered external interrupt
Level high / low triggered external interrupt
FEn field determines which level triggers the interrupt. If FEn == 1, level high
triggers the interrupt and FEn == 0, level low triggers the interrupt.
4-3