Normal Interrupt Status Register - Samsung S3C2416 User Manual

HSMMC CONTROLLER

5.18 NORMAL INTERRUPT STATUS REGISTER

The Normal Interrupt Status Enable affects reads of this register, but Normal Interrupt Signal Enable does not
affect these reads. An interrupt is generated when the Normal Interrupt Signal Enable is enabled and at least one
of the status bits is set to 1. For all bits except Card Interrupt and Error Interrupt, writing 1 to a bit clear it; writing
to 0 keeps the bit unchanged. More than one status can be cleared with a single register write. The Card
Interrupt is cleared when the card stops asserting the interrupt; that is, when the Card Driver services the
interrupt condition.
Register Address
NORINTSTS0 0X4AC00030
NORINTSTS1 0X4A800030
Name
STAERR
STAFIA3
STAFIA2
STAFIA1
STAFIA0
STARWAIT
STACCS
STACARDINT
20-46
R/W
ROC/RW1C Normal Interrupt Status Register (Channel 0)
ROC/RW1C Normal Interrupt Status Register (Channel 1)
Bit
[15]
Error Interrupt
If any of the bits in the Error Interrupt Status register are set, then
this bit is set. Therefore the Host Driver can efficiently test for an
error by checking this bit first. This bit is read only. (ROC)
0 = No Error
1 = Error
[14] FIFO SD Address Pointer Interrupt 3 Status (RW1C)
0 = Occurred
1 = Not Occurred
[13] FIFO SD Address Pointer Interrupt 2 Status (RW1C)
0 = Occurred
1 = Not Occurred
[12] FIFO SD Address Pointer Interrupt 1 Status (RW1C)
0 = Occurred
1 = Not Occurred
[11] FIFO SD Address Pointer Interrupt 0 Status (RW1C)
0 = Occurred
1 = Not Occurred
[10] Read Wait Interrupt Status (RW1C)
0 = Read Wait Interrupt Occurred
1 = Read Wait Interrupt Not Occurred
Note: After checking response for the suspend command, release Read
Wait interrupt status manually if BS = 0
[9] CCS Interrupt Status (RW1C)
Command Complete Singal Interrupt Status bit is for CE-ATA
interface mode.
0 = CCS Interrupt Occurred
1 = CCS Interrupt Not Occurred
[8]
Card Interrupt
Writing this bit to 1 does not clear this bit. It is cleared by resetting
the SD card interrupt factor. In 1-bit mode, the Host Controller shall
S3C2416X RISC MICROPROCESSOR
Description
Description
Reset Value
0x0
0x0
Initial Value
0
0
0
0
0
0
0
0