Data Sheet

Pin # Pin Name Pin Type Description / Default
14 GPIO/PTA_TX_CONF I/O As part of PTA interface, these pins can be used to manage co-
existence with another 2.4 GHz radio, or can be used as GPIO
15 GPIO/PTA_RF_ACT I/O
16 GPIO/PTA_STATUS I/O
17 GPIO/PTA_FREQ I/O
18 LP_CLK Input Low Power clock input. This pin is typically connected to the 32
KHz clock. If not used, the pin should be connected to GND
19 GPIO/WIRQ I/O This pin can be used as an IRQ to host for SDIO, or can be used
as a GPIO.
20 VDD VDD Power supply for the digital and RF parts
21 GND GND
22 SDIO_CLK/SPI_CLK Input Host interface: SDIO_CLK or SPI_CLK
23 SDIO_CMD/SPI_MOSI I/O Host interface: SDIO_CMD or SPI_MOSI
24 SDIO_DAT0/SPI_MISO I/O Host interface: SDIO_DAT0 or SPI_MISO
25 SDIO_DAT1/SPI_WIRQ I/O Host interface: SDIO_DAT1 or WIRQ
26 SDIO_DAT2/HIF_SEL I/O Host interface selection: Used to select the host interface during
RESETn rising edge. If Low, selects SPI interface. When High,
selects SDIO interface and this pin becomes SDIO_DAT2
27 SDIO_DAT3/SPI_CSn I/O Host interface: SDIO_DAT3 or SPI_CSn
28 VDD_IO VDD Power supply for I/Os
29 GPIO I/O These pins can be used for GPIO.
30 GPIO I/O
31 GPIO I/O
32 GPIO I/O This pin can be used for dynamic control of an external Power
Amplifier, otherwise this can be used as GPIO.
33 GND GND
34 GPIO I/O or Analog This pin can be used as a GPIO
35,36 GND GND
37 GPIO I/O These pins can be used for GPIO.
38 GPIO I/O
39 RESERVE_1 N/A Reserved. For normal operation, this pin must be grounded.
40 RESERVE_2 N/A Reserved. This pin should be left unconnected.
41-56 GND GND
47 ANT_LOOP Analog To use the embedded antenna, this pin should be connected to
ground through the embedded antenna loop capacitor. For OPNs
without the embedded antenna, this pin should be a No Connect.
48-58 GND GND
WFM200S Data Sheet
Pin Descriptions
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