Samsung S5PC100, User Manual

Page: 377 / 1863

S5PC100 USER’S MANUAL (REV1.0) VECTORED INTERRUPT CONTROLLER
4.1-21
4.10 VECTOR ADDRESS REGISTER
(VICADDRESS, R/W, ADDRESS=0XE400_0F00, 0XE410_0F00, 0XE420_0F00)
VICADDRESS
Bit Description Reset Value
VectAddr [31:0]
Contains the address of the currently active ISR, with reset
value 0x00000000.
A read of this register returns the address of the ISR and sets
the current interrupt as being serviced. A read must be
performed while there is an active interrupt.
A write of any value to this register clears the current interrupt.
A write must only be performed at the end of an interrupt
service routine.
0x00000000
4.11 SOFTWARE PRIORITY MASK REGISTER
(VICSWPRIORITYMASK, R/W, ADDRESS=0XE400_0024, 0XE410_0024, 0XE420_0024)
VICSWPRIORITYMASK Bit Description Reset Value
Reserved [31:16] Reserved, read as 0, do not modify 0x0
SWPriorityMask [15:0]
Controls software masking of the 16 interrupt priority levels:
0 = Interrupt priority level is masked
1 = Interrupt priority level is not masked
Each bit of the register is applied to each of the 16 interrupt
priority levels.
0xFFFF
4.12 VECTOR ADDRESS REGISTERS
(VICVECTADDR[0-31], R/W, ADDRESS=0XE400_0100~017C, 0XE410_0100~017C, 0XE420_0100~017C)
VICVECTADDR[0-31]
Bit Description Reset Value
VectorAddr 0-31 [31:0] Contains ISR vector addresses. 0x00000000
4.13 VECTOR PRIORITY REGISTERS (VICVECTPRIORITY[0-31] AND VICVECTPRIORITYDAISY, R/W,
ADDRESS=0XE400_0200~027C, 0XE410_0200~027C, 0XE420_0200~027C)
VICVECTPRIORITY[0-31]
and
VICVECTPRIORITYDAISY
Bit Description Reset Value
Reserved [31:4] Reserved, read as 0, do not modify. 0x0
VectPriority [3:0]
Selects vectored interrupt priority level. You can select any
of the 16 vectored interrupt priority levels by programming
the register with the hexadecimal value of the priority level
required, from 0-15.
0xF