Interrupt Control Unit
7-12
7.3
MASTER MODE INTERRUPT CONTROLLER REGISTERS
The interrupt controller registers for master mode are shown in Table 7-2. All the registers
can be read and written unless otherwise specified.
Registers can be redefined in slave mode. See section 7.4 on page 7-28 for detailed
information regarding slave mode register usage. On reset, the microcontroller is in master
mode. Bit 14 of the relocation register (see Figure 4-2) must be set to initiate slave mode
operation.
Table 7-2
Interrupt Controller Registers in Master Mode
Offset
Register
Mnemonic Register Name
Associated
Pins
Comments
3Ah
I1CON
INT1 Control
INT1
38h
I0CON
INT0 Control
INT0
3Eh
I3CON
INT3 Control
INT3
3Ch
I2CON
INT2 Control
INT2
40h
I4CON
INT4 Control
INT4
36h
DMA1CON DMA1 Interrupt Control
DRQ1
34h
DMA0CON DMA0 Interrupt Control
DRQ0
32h
TCUCON
Timer Interrupt Control
TMRIN1
TMRIN0
TMROUT1
TMROUT0
42h
WDCON
Watchdog Timer Interrupt Control
44h
SPICON
Serial Port Interrupt Control
TXD, RXD
30h
INTSTS
Interrupt Status
2Eh
REQST
Interrupt Request
INT4–INT0
DRQ1–DRQ0
Read-only register
2Ch
INSERV
In-Service
INT4–INT0
DRQ1–DRQ0
2Ah
PRIMSK
Priority Mask
28h
IMASK
Interrupt Mask
INT4–INT0
DRQ1–DRQ0
26h
POLLST
Poll Status
Read-only register
24h
POLL
Poll
Read-only register
22h
EOI
End of Interrupt
Write-only register
Содержание AM186EM
Страница 1: ...Am186 EM and Am188 EM Microcontrollers User s Manual...
Страница 4: ...iv...
Страница 12: ...Table of Contents xii...
Страница 62: ...Peripheral Control Block 4 10...
Страница 76: ...Chip Select Unit 5 14...
Страница 122: ...Timer Control Unit 8 8...
Страница 136: ...DMA Controller 9 14...
Страница 144: ...Asynchronous Serial Port 10 8...
Страница 158: ...Programmable I O Pins 12 6...
Страница 186: ...Index I 12...