CYW4343X
Table 26. I/O Statesa (Cont.)
Out-of-Reset;
Out-of-Reset;
(WL_REG_ON = 1 (WL_REG_ON = 0
BT_REG_ON = 0) BT_REG_ON = 1)
Power-Downc
Low Power State/Sleep WL_REG_ON = 0
(WL_REG_ON = 1;
BT_REG_ON =
Do Not Care)
Name
I/O Keeperb Active Mode
(All Power Present)
BT_REG_ON = 0
VDDIOs Present
VDDIOs Present
Power Rail
High-Z, NoPullf
GPIO_9
I/O
Y
TBD
Active mode
Input, WLAN UART
RX, NoPull
Active mode
Input, NoPull
WCC_VDDIO
High-Z, NoPullf
GPIO_10
I/O
Y
TBD
Active mode
Output, WLAN UART Active mode
TX, NoPull
Output, NoPull, Low WCC_VDDIO
High-Z, NoPullf
High-Z, NoPullf
GPIO_11
GPIO_12
I/O
I/O
Y
Y
TBD
TBD
Active mode
Active mode
Input, Low, NoPull
Active mode
Active mode
Input, NoPull
Input, NoPull
WCC_VDDIO
WCC_VDDIO
Input, GCI GPIO[6],
NoPull
High-Z, NoPullf
GPIO_13
I/O
Y
TBD
Active mode
Input, GCI GPIO[7],
NoPull
Active mode
Input, NoPull
WCC_VDDIO
High-Z, NoPullf
High-Z, NoPullf
GPIO_14
GPIO_15
I/O
I/O
Y
Y
TBD
TBD
Active mode
Active mode
Input, PD
Input, PD
Active mode
Active mode
Input, PD
Input, PD
WCC_VDDIO
WCC_VDDIO
a. PU = pulled up, PD = pulled down.
b. N = pad has no keeper. Y = pad has a keeper. Keeper is always active except in the 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, for example, SDIO_CLK.
c. In the Power-down state (xx_REG_ON = 0): High-Z; NoPull => The pad is disabled because power is not supplied.
d. Depending on whether the PCM interface is enabled and the configuration is master or slave mode, it can be either an output or input.
e. Depending on whether the I2S interface is enabled and the configuration is master or slave mode, it can be either an output or input.
f.
The GPIO pull states for the active and low-power states are hardware defaults. They can all be subsequently programmed as a pull-up or pull-down.
Document No. 002-14797 Rev. *H
Page 89 of 128
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