I/O States
BCM4354 Data Sheet
Table 28: I/O States (Cont.)
b
Power-down
Out-of-Reset; Before
SW Download
(BT_REG_ON High;
WL_REG_ON High)
(WL_REG_ON High
and BT_REG_ON Low)
and VDDIOs Are
Present
(BT_REG_ON and
Low Power State/Sleep (All WL_REG_ON Held
a
Name
I/O Keeper Active Mode
O: NoPull
Power Present)
Low)
Power Rail
RF_SW_CTRL_X I/O
Y
O: NoPull
I: PD
O: NoPull
: NoPull
VDDIO_RF
a. Keeper column: N = pad has no keeper. Y = pad has a keeper. Keeper is always active except in Power-down state. If there is no keeper, and it is an input
and there is Nopull, then the pad should be driven to prevent leakage due to floating pad (SDIO_CLK, for example).
b. In the Power-down state (xx_REG_ON=0): High-Z; NoPull => the pad is disabled because power is not supplied.
c. Depending on whether the PCM interface is enabled and the configuration of PCM is in master or slave mode, it can be either input or output.
d. Depending on whether the I2S interface is enabled and the configuration of I2S is in master or slave mode, it can be either input or output.
e. For WLBGA this GPIO has NoPull in this state. For WLCSP this GPIO has a PU in this state.
Broadcom®
October 15, 2014 • 4354-DS109-R
Page 124
BROADCOM CONFIDENTIAL
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