Samsung S3C6400X User Manual page 295

GPIO
CURRENT SERVICE REGISTER (SERVICE)
Current Service Register presents which interrupt should be serviced. The bit values describe the group number
and interrupt number. This value is decided by the PRIORITY register and valid when nIRQ is generated.
Current Service Pending Register presents which interrupt pending bit must be cleared. Only 1 bit is set 1
corresponding to Current Service Register. After complete interrupt service routine, you can clear the interrupt
pending bit in Interrupt Pending Registers by write the value contained in this register.
For example, if the group field of Current Service Register is 4, you can clear the corresponding interrupt pending
bit by writing the value of SERVICEPEND to EINT34PEND.
Register Address
SERVICE 0x7F008284
SERVICEPEND 0x7F008288
SERVICE Bit
Group [7:4]
Interrupt No. [3:0]
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
74
10-
R/W
R Current Service Register
R Current Service Pending Register
Group Number
Interrupt number to be serviced.
This is valid only when Group field is not 00.
S3C6400 RISC MICROPROCESSOR
Description
Description
Reset Value
0x00
0x00
Initial State
0000
0000