Samsung S5PC110, Manual

Page: 1043 / 2426

S5PC110_UM 7 SD/MMC CONTROLLER
7-63
7.10.11 NORMAL INTERRUPT STATUS REGISTER
7.10.11.1 Normal Interrupt Status Register
•
NORINTSTS0, ROC/RW1C, Address = 0xEB00_0030
•
NORINTSTS1, ROC/RW1C, Address = 0xEB10_0030
•
NORINTSTS2, ROC/RW1C, Address = 0xEB20_0030
•
NORINTSTS3, ROC/RW1C, Address = 0xEB30_0030
The Normal Interrupt Status Enable affects reads of this register, but Normal Interrupt Signal Enable does not
affect these reads. An interrupt is generated if 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 clears it; writing 0
keeps the bit unchanged. More than one status is cleared with a single register write. The Card Interrupt is cleared
if the card stops asserting the interrupt; that is, if the Card Driver services the interrupt condition.
NORINTSTS Bit Description Initial State
STAERR [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 checks this bit first to
efficiently tests for an error. This bit is read only. (ROC)
0 = No Error
1 = Error
0
STAFIA3 [14] FIFO SD Address Pointer Interrupt 3 Status (RW1C)
0 = Occurred
1 = Not Occurred
If the FIFO Address of the SD clock side reaches the FIFO
Interrupt Address register 3 values, this status bit is asserted. 0
STAFIA2 [13] FIFO SD Address Pointer Interrupt 2 Status (RW1C)
0 = Occurred
1 = Not Occurred
If the FIFO Address of the SD clock side reaches the FIFO
Interrupt Address register 2 values, this status bit is asserted. 0
STAFIA1
[12] FIFO SD Address Pointer Interrupt 1 Status (RW1C)
0 = Occurred
1 = Not Occurred
If the FIFO Address of the SD clock side reaches the FIFO
Interrupt Address register 1 value, this status bit is asserted. 0
STAFIA0
[11] FIFO SD Address Pointer Interrupt 0 Status (RW1C)
0 = Occurred
1 = Not Occurred
If the FIFO Address of the SD clock side reaches the FIFO
Interrupt Address register 0 value, this status bit is asserted. 0
STARWAIT
[10] Read Wait Interrupt Status (RW1C)
0 = Read Wait Interrupt Not Occurred
1 = Read Wait Interrupt Occurred
Note: After checking response for the suspend command,
release Read Wait interrupt status manually if BS = 0 (BS means 0