AMPAK Technology Inc.
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Proprietary & Confidential Information
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9. J11: WL_VIO power path for 1V8 or 3V3 selection.
10. SW1: Power on/off switch.
11. CN1: NFC interface connects with NFC antenna.
12. S1: SMA connector let RF signal in/out path, you could connect with RF cable or
Dipole antenna.
13. S2: SMA connector let GPS RF signal input, you could connect with GPS
antenna.
14. Ct1: WLAN and BT control pins, strongly recommended WL_HWAKE(IRQ)
connected to MCU.
15. Ct2: NFC control pins, strongly recommended N_WAKE and N_H_WAKE
connected to MCU.
2. WiFi function verification step
WIFI SDIO: Using external pull up resistors depends on the SDIO supply voltage. For
1.8V, the resistance range is 30
KΩ~82KΩ. For 3.3V, its range from 21
KΩ~41 KΩ on the four data lines and the CMD line as the following circuitry.
VIO_3V3
R6
R7
R10
R28
R29
J8
9
SD2
1
SD3
2
SDIO_D2
SDIO_D3
SDIO_CMD
SDCMD
3
GND
4
3.3V
5
SDCLK
6
GND
7
SD0
8
SD1
SDIO_CLK
SDIO_D0
SDIO_D1
1
2
C10
10uF
SDIO_3V3
Golden Finger_9
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.
