RS_SDIO controller
RM0082
716/844
Doc ID 018672 Rev 1
[06]
CDIINT
1’h0
RW1C
This status is set if the Card Inserted in the Present
State register changes from 0 to 1. When the HD
writes this bit to logic ‘1’ to clear this
status the status of the Card Inserted in the Present
State register should be confirmed. Because the
card detect may possibly be changed when the HD
clear this bit an Interrupt event may not be
generated.
1’b0 - Card State Stable or Debouncing
1’b1 - Card Inserted
[05]
BUFRDRDY
1’h0
RW1C
This status is set if the Buffer Read Enable changes
from 0 to 1.
1’b0 - Not Ready to read Buffer.
1’b1 - Ready to read Buffer.
[04]
BUFWRRDY
1’h0
RW1C
This status is set if the Buffer Write Enable changes
from 0 to 1.
1’b0 - Not Ready to Write Buffer.
1’b1 - Ready to Write Buffer.
[03]
DMAINT
1’h0
RW1C
This status is set if the HC detects the Host DMA
Buffer Boundary in the Block Size register.
1’b0 - No DMA Interrupt
1’b1 - DMA Interrupt is Generated
[02]
BLKGAPE
1’h0
RW1C
If the Stop At Block Gap Request in the Block Gap
Control Register is set, this bit is set.
Read Transaction:
This bit is set at the falling edge of the DAT Line
Active Status (When the transaction is stopped at
SD Bus timing. The Read Wait must be supported
in order to use this function).
Write Transaction:
This bit is set at the falling edge of Write Transfer
Active Status (After getting CRC status at SD Bus
timing).
1’b0- No Block Gap Event
1’b1 - Transaction stopped at Block Gap
Table 636.
NIRQSTAT register bit assignments (continued)
Bit
Name
Reset
value
Type
Description