User's Manual

AMPAK Technology Inc. www.ampak.com.tw Proprietary & Confidential Information
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