NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 916 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
SD Host DMA Interrupt Status Register (SDH_DMAINTSTS)
Register
Offset
R/W
Description
Reset Value
SDH_DMAINTSTS
0x414 R/W
SD Host DMA Interrupt Status Register
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
7
6
5
4
3
2
1
0
Reserved
WEOT_IF
TABORT_IF
Bits
Description
[31:2]
Reserved
Reserved.
[1]
WEOT_IF
Wrong EOT Encountered Interrupt Flag
When DMA Scatter-Gather function is enabled, and EOT of the descriptor is encountered
before DMA transfer finished (that means the total sector count of all PAD is less than the
sector count of FMI), this bit will be set.
0 = No EOT encountered before DMA transfer finished.
1 = EOT encountered before DMA transfer finished.
NOTE:
This bit is read only, but can be cleared by writing ‘1’ to it.
[0]
TABORT_IF
DMA Read/Write Target Abort Interrupt Flag
0 = No bus ERROR response received.
1 = Bus ERROR response received.
NOTE:
This bit is read only, but can
be cleared by writing ‘1’ to it.
NOTE:
When DMA’s bus master received ERROR response, it means that target abort is happened.
DMA will stop transfer and respond this event to software and then SD host goes to IDLE state. When
target abort occurred or WEOT_IF is set, software must reset DMA and IP, and then transfer those
data again.