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Doc. NO:
2
WIFI SDIO: Using external pull up resistors depends on the SDIO supply voltage. For
1.8V, the resistance range is 30KΩ~82KΩ. For 3.3V, its range from 21
KΩ~41 KΩ on the four data lines and the CMD line as the following circuitry.
SDIO_D3
SDIO_D2
SDIO_D1
C10
10uF
1
2
R6
R7
R10
SDIO_D0
J8
Golden Finger_9
SD3
1
SDCMD
2
GND
3
3.3V
4
SDCLK
5
GND
6
SD0
7
SD1
8
SD2
9
SDIO_CLK
R28
R29
SDIO_CMD
VIO_3V3
SDIO_3V3
Figure2. WiFi verification connection interface to Host SDIO
Hardware Setup:
Refer to Figure2 SDIO pin definition connects the J8 interface of AP6XXX
evaluation board to Host SDIO control interface.
Using pull high resistors (R6, R7, R10, R28, R29) that resistance is 30Kohm for
1.8V or 3.3V VDDIO pull up voltage. (Pull high resistors are un-necessary if at
verification phase.)
Connects an external antenna at SMA connector on the evaluation board.
Note to the VDDIO voltage level should be the same with GPIO voltage level of
Host CPU. (VDDIO 3.3V or 1.8V selection by jump J11)
WiFi software setup:
Please follow up software guideline of Ampak official released.
3. Bluetooth function verification step
