User's Manual

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Pin No Pin Name Description Type
44 WL_GPIO_1
Reserved pin.
WLAN general purpose interface pins. The pin is high-impedance on
power up and reset. Subsequently, they become inputs or outputs
through software control. The pin has programmable pull-up/down.
45 SDIO_CMD_SPI_DI
SDIO 4-bit Mode: Command line
SDIO 1-bit Mode: Command line
This pin has an internal weak pull-up resistor. The resistor is enabled by
default but can be disabled by software. The value of the pull-up depends
on the VDDIO_SD supply voltage. For 1.8V, the resistance range is 30–
82 k Ohms. For 2.6V, it ranges from 21–41 k Ohms. For 3.3V, it ranges
from 15–35 k ohms
I/O
46 BT_GPIO_2
Reserved pin.
Bluetooth general purpose interface pin. The pin is high-impedance on
power up and reset. Subsequently, they become inputs or outputs
through software control.
47 SDIO_DATA0_SPI_DO
SDIO 4-bit Mode: Data line 0
SDIO 1-bit Mode: Data line
This pin has an internal weak pull-up resistor. The resistor is enabled by
default but can be disabled by software. The value of the pull-up depends
on the VDDIO_SD supply voltage. For 1.8V, the resistance range is 30–
82 k Ohms. For 2.6V, it ranges from 21–41 k Ohms. For 3.3V, it ranges
from 15–35 k ohms
I/O
48 VDDIO_SD SDIO/SPI I/O supply (1.8V ~ 3.3V) I
49 BT_SHUTDOWN_N
Used by PMU (along with WL_SHUTDOWN_N_RST_N) to decide
whether or not to power down internal BCM4329 regulators. If both
BT_SHUTDOWN_N and WL_SHUTDOWN_N_RST_N are low then the
regulators will be disabled.
This signal has an internal 200 k ohms pull-down resistor.
The minimum Vih for this pin is 1.36V; the maximum is 3.3V ± 10%.
I
50 GND Ground
51 RTC_CLK
Real Time Clock 32.768KHz input
(Auto-detection of frequencies requires that the RTC_CLK frequency drift < 200
ppm.
I
52 NC No Connect
※ All of pin definition for module side