W90P710_05 Datasheet, PDF (238/526 Pages) Winbond – 16/32-bit ARM microcontroller

W90P710
7.9.3 SDIO Register Description
SD Gloal Control Register (SDGCR)
REGISTER ADDRESS
SDGCR 0xFFF0_7000
R/W
R/W
DESCRIPTION
SD Glogal Control Register
RESET
VALUE
0x0000_0000
31
23
15
7
Reserved
30
29
22
21
14
13
Reserved
6
5
WrSel
28
27
26
Reserved
20
19
18
Reserved
12
11
10
4
3
2
DMARd DMAWr
25
24
17
16
9
RdSel
1
SWRST
8
0
SDIOEN
BITS
[31:11] Reserved
[10:8] RdSel
[6:4]
WrSel
DESCRIPTIONS
-
Read Select
This field indicates which of DMA or SDIO host controller can read data
from buffer 0 or buffer 1.
3’b000: DMA can read buffer 0 (Default)
3’b011: SDIO host controller can read buffer 0
3’b100: DMA can read buffer 1
3’b111: SDIO host controller can read buffer 1
Write Select
This field indicates which of DMA, SDIO host controller can write data
into buffer 0 or buffer 1.
3’b000: DMA can write buffer 0 (Default)
3’b011: SDIO host controller can write buffer 0
3’b100: DMA can write buffer 1
3’b111: SDIO host controller can write buffer 1
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