GPIO/SDIO Alternative Signal Functions
BCM4339 Preliminary Data Sheet
GPIO/SDIO Alternative Signal Functions
Table 28: BCM4339 GPIO/SDIO Alternative Signal Functions a b
Pins
WLBGA SDIO
WLCSP SDIO
FCBGA PCIE
FCBGA SDIO
GPIO_0
GPIO_1
GPIO_2
WL_HOST_WAKE
WL_DEV_WAKE
WL_HOST_WAKE
WL_DEV_WAKE
WL_HOST_WAKE
WL_HOST_WAKE
WL_RF_DISABLE_L
WL_RF_DISABLE_L
TCK, GCI_GPIO_1, or
UART RX
TCK or GCI_GPIO_1
TCK, GCI_GPIO_1, or UART RX
TCK, GCI_GPIO_1, or UART RX
GPIO_3
TMS or GCI_GPIO_0
TDI or SECI_IN
TDO or SECI_OUT
TRST_L or UART TX
[Strap, tied High]
[Strap, tied High or Low]
N/A
TMS or GCI_GPIO_0
TDI
TMS or GCI_GPIO_0
TDI or SECI_IN
TDO or SECI_OUT
TRST_L or UART TX
[Strap, tied Low]
–
TMS or GCI_GPIO_0
TDI or SECI_IN
TDO or SECI_OUT
TRST_L or UART TX
[Strap, tied High]
[Strap, tied High or Low]
N/A
GPIO_4
GPIO_5
TDO
GPIO_6
TRST_L
GPIO_7
[Strap, tied High]
[Strap, tied High or Low]
–
GPIO_8
GPIO_9
N/A
GPIO_10
GPIO_11
N/A
SECI_IN
N/A
N/A
N/A
SECI_OUT
UART_TX
UART_RX
–
N/A
N/A
GPIO_12
GPIO_13
GPIO_14
GPIO_15
SDIO_CLK
SDIO_CMD
SDIO_DATA_0
SDIO_DATA_1
SDIO_DATA_2
SDIO_DATA_3
N/A
N/A
N/A
N/A
WL_LED
WL_LED
N/A
–
–
N/A
–
–
–
SDIO_CLK
SDIO_CMD
SDIO_DATA_0
SDIO_DATA_1
SDIO_DATA_2
SDIO_DATA_3
SDIO_CLK
SDIO_CMD
SDIO_DATA_0
SDIO_DATA_1
SDIO_DATA_2
SDIO_DATA_3
[Strap, tied High]
SPROM_CS
SPROM_CLK
SPROM_MISO
[Strap, tied Low]
SPROM_MOSI
SDIO_CLK
SDIO_CMD
SDIO_DATA_0
SDIO_DATA_1
SDIO_DATA_2
SDIO_DATA_3
a. N/A = Pin not available in this package.
b. JTAG signals (TCK, TDI, TDO, TMS, and TRST_L) are selected when JTAG_SEL pin is high.
Broadcom®
November 17, 2014 • 4339-DS106-R
Page 118
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