GPIO Alternative Signal Functions
BCM4354 Data Sheet
Table 26: GPIO Alternative Signal Functions (Cont.)
Miscellaneous-
0 (JTAG_SEL =
Test Mode
UART
2
SFLASH
3
SPROM
BSC
1)
GCI
7
Miscellaneous-1 Miscellaneous-2 PWDOG
Function Select
Pin
Additional
Names
0
4
5
6
8
9
10
Functionality
GPIO_15 TEST_GPIO_1 FAST_UART UART_DBG
_CTS_IN _TX
–
–
–
GCI_GPIO_
3
–
–
–
–
5
Note:
1. GPIO_0 and WL_DEV_WAKE signals are selected by using software.
2. USB_VBUS_PRESENT indicates that USB30D is selected.
3. SDIO_PADVDDIO = 1 (not in straps table) is set to 3.3V by default for all packages.
4.GPIO_7 can be used as WL_LED in WLBGA packages.
5. USB_MDx/HSIC_MDx MDIO is the interface of USB1.0/2.0/3.0 PHY or of HSIC PHY (depending on the strap option).
Table 27 defines status for all BCM4354 GPIOs based on the tristate test mode.
Table 27: GPIO Status Vs. Test Modes
Test Mode
Function Select
Status for All GPIOs
TRISTATE_IND
TRISTATE_PDN
TRISTATE_PUP
TRISTATE
12
13
14
15
Input disable
Pull down
Pull up
Tristate
Broadcom®
October 15, 2014 • 4354-DS109-R
Page 121
BROADCOM CONFIDENTIAL
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