Ipr — Interrupt Priority Register: Ffh, Bank0 - Samsung S3F84B8 User Manual

S3F84B8_UM_REV 1.00
4.1.19 IPR — INTERRUPT PRIORITY REGISTER: FFH, BANK0
Bit Identifier
Reset Value
Read/Write
.7, .4, and .1
.6
.5
.3
.2
.0
NOTE: Interrupt Group A - IRQ0, IRQ1
Interrupt Group B - IRQ2, IRQ3, IRQ4
Interrupt Group C - IRQ5, IRQ6, IRQ7
.7 .6
x x
R/W R/W
Priority Control Bits for Interrupt Groups A, B, and C (Note)
0 0 0 Group priority undefined
0 0 1 B > C > A
0 1 0 A > B > C
0 1 1 B > A > C
1 0 0 C > A > B
1 0 1 C > B > A
1 1 0 A > C > B
1 1 1 Group priority undefined
Interrupt Subgroup C Priority Control Bit
0 IRQ6 > IRQ7
1 IRQ7 > IRQ6
Interrupt Group C Priority Control Bit
0 IRQ5 > (IRQ6, IRQ7)
1 (IRQ6, IRQ7) > IRQ5
Interrupt Subgroup B Priority Control Bit
0 IRQ3 > IRQ4
1 IRQ4 > IRQ3
Interrupt Group B Priority Control Bit
0 IRQ2 > (IRQ3, IRQ4)
1 (IRQ3, IRQ4) > IRQ2
Interrupt Group A Priority Control Bit
0 IRQ0 > IRQ1
1 IRQ1 > IRQ0
.5 .4
x x
R/W R/W R/W
4-19
4 CONTROL REGISTERS
.3 .2 .1
x x x
R/W R/W
.0
x
R/W