User`s guide

LZ87010 Advance User’s Guide Interrupts

1/15/03 12-11

12.3.5 IP1 and IPH1 (Interrupt Priority) Registers

The IP1 and IPH1 (Interrupt Priority) registers set the priority of the extended interrupts.

Priority level is a two-bit number, with priority 0b00 being the lowest priority and 0b11 the

highest. The least-significant bits of the individual interrupt priorities are in the IP and IP1

registers, while the most-significant bits are in the IPH and IPH1 registers.

Table 12-13. IP1 and IPH1 Register

BIT 7 6 5 4 3 2 1 0

FIELD PI13 PI12 PI11 PI10 PI9 PI8 PI7 PI6

RESET 0 0 0 0 0 000

RW RW RW RW RW RW RW RW RW

ADDR

IP1: 0xF8

IPH1: 0xF9

Table 12-14. IP1, IPH1 Register Bits

BIT NAME DESCRIPTION

7 PI13 Priority of Interrupt 13 (INT[7:2])

6 PI12 Priority of Interrupt 12 (DAC 1)

5 PI11 Priority of Interrupt 11 (DAC 0)

4 PI10 Priority of Interrupt 10 (ADC)

3 PI9 Priority of Interrupt 9 (UART 1)

2PI8

Priority of Interrupt 8 (I

1 PI7 Priority of Interrupt 7 (Timer 2 and Timer 3)

0 PI6 Priority of Interrupt 6 (Timer 4 and Timer 5)