GPIO Alternative Signal Functions
BCM4354 Data Sheet
GPIO Alternative Signal Functions
Table 26: GPIO Alternative Signal Functions
Miscellaneous-
0 (JTAG_SEL =
1)
Test Mode
UART
2
SFLASH
3
SPROM
BSC
GCI
7
Miscellaneous-1 Miscellaneous-2 PWDOG
Function Select
0
Pin
Additional
Names
4
5
6
8
9
10
Functionality
GPIO_0
GPIO_1
TEST_GPIO_0 FAST_UART UART_DBG
_RX _TX
–
BSC_CLK
–
GCI_GPIO_ SDIO_SEP_INT SDIO_SEP_INT PWDOG
WL_HOST_WAK
E
4
_OD
_GPIO_0
TEST_GPIO_1 FAST_UART UART_DBG
_TX _RX
–
BSC _SDA RF_DISABLE_L GCI_GPIO_
5
–
–
PWDOG
WL_DEV_WAKE/
_GPIO_1 HSIC_HOST_RD
Y
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
GPIO_9
TEST_GPIO_2 FAST_UART –
_CTS_IN
–
–
–
–
–
N/A
N/A
N/A
N/A
N/A
TCK
GCI_GPIO_
1
–
–
–
–
–
–
–
–
–
–
––
–
–
–
–
–
–
–
TEST_GPIO_3 FAST_UART –
_RTS_OUT
TMS
TDI
GCI_GPIO_
0
–
–
TEST_GPIO_4 UART_RX
TEST_GPIO_5 UART_TX
TEST_GPIO_6 –
UART_DBG
_RX
SECI_IN
–
–
UART_DBG
_TX
TDO
TRST_L
SECI_OUT
–
–
–
GCI_GPIO_ SECI_IN
2
–
–
TEST_GPIO_7 FAST_UART SFLASH_CS SPROM_CS BSC_SDA PMU_TEST_O GCI_GPIO_ USB_MDC/
PWDOG
_GPIO_2 (For WLBGA)
WL_LED
_RTS_OUT
3
HSIC_MDC
TEST_GPIO_8 FAST_UART SFLASH_CLK SPROM_CLK BSC_CLK
_CTS_IN
–
–
–
–
–
–
SECI_IN
USB_MDIO/
HSIC_MDIO
PWDOG
_GPIO_3
–
TEST_GPIO_9 FAST_UART SFLASH_MI SPROM_MI
_RX
PALDO
_PU
SECI_OUT PALDO_PD
PWDOG
_GPIO_4
–
GPIO_10 TEST_GPIO_1 FAST_UART SFLASH_MO SPROM_MO
_TX
–
GCI_GPIO_
4
–
PWDOG
_GPIO_5
HSIC_DEV_RDY
0
GPIO_11 TEST_GPIO_1 FAST_UART –
_RX
–
–
–
PALDO
_PU
GCI_GPIO_ PALDO_PD
5
–
–
–
USB_VBUS
_PRESENT
1
GPIO_12 TEST_GPIO_1 FAST_UART –
_TX
–
GCI_GPIO_
1
–
2
GPIO_13 TEST_GPIO_1 usbphy
–
–
GCI_GPIO_
0
–
–
–
3
_scan
_resetb
GPIO_14 TEST_GPIO_1 FAST_UART UART_DBG
–
–
–
GCI_GPIO_
2
–
–
–
4
_RTS_OUT
_RX
Broadcom®
October 15, 2014 • 4354-DS109-R
Page 120
BROADCOM CONFIDENTIAL
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