Wi-Fi&Bluetooth Module Series
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3.4.3. SDIO Interface
The following table shows the pin definition of SDIO interface.
Table 8: Pin Definition of SDIO Interface
The following figure shows the SDIO interface connection between FC80A and host.
SDIO_CLK
SDIO_CMD
SDIO_DATA0
SDIO_DATA1
SDIO_DATA2
SDIO_DATA3
HOST
FC80A
SDIO_DATA0
SDIO_DATA1
SDIO_DATA2
SDIO_DATA3
SDIO_CLK
SDIO_CMD
NM
VDDIO
NM
NM
NM
NM
NM
NM
NM
NM
NM
NM
NM
Figure 5: SDIO Interface Connection
Pin Name
Pin No.
I/O
Description
Comment
SDIO_CMD
17
DIO
SDIO
command
VDDIO power domain
SDIO_CLK
18
DI
SDIO clock
SDIO_DATA3
19
DIO
SDIO
data
bit 3
SDIO_DATA2
20
DIO
SDIO
data bit 2
SDIO_DATA0
21
DIO
SDIO
data bit 0
SDIO_DATA1
22
DIO
SDIO
data bit 1