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Document No. 002-14949 Rev. *E
PRELIMINARY
CYW43353
12.5 I/O States
The following notations are used in
■
I: Input signal
■
O: Output signal
■
I/O: Input/Output signal
■
PU = Pulled up
■
PD = Pulled down
■
NoPull = Neither pulled up nor pulled down
Table 22. I/O States
Name
I/O
Keeper
1
Active Mode
Low Power State/Sleep
(All Power Present)
Power-down
2
(BT_REG_ON and
WL_REG_ON Held
Low)
Out-of-Reset;
Before SW Download
(BT_REG_ON High;
WL_REG_ON High)
(WL_REG_ON High
and BT_REG_ON =
0) and VDDIOs Are
Present
Power Rail
WL_REG_ON
I
N
Input; PD (pull-down can be
disabled)
Input; PD (pull-down can be
disabled)
Input; PD (of 200K)
Input; PD (of 200K)
Input; PD (of 200K)
–
BT_REG_ON
I
N
Input; PD (pull down can be
disabled)
Input; PD (pull down can be
disabled)
Input; PD (of 200K)
Input; PD (of 200K)
Input; PD (of 200K)
–
CLK_REQ
I/O
Y
Open drain or push-pull
(programmable). Active high.
Open drain or push-pull
(programmable). Active high
PD
Open drain. Active high
Open drain. Active high. BT_VDDIO
BT_HOST_WAKE I/O
Y
Input/Output; PU, PD, NoPull
(programmable)
Input/Output; PU, PD, NoPull
(programmable)
High-Z, NoPull
Input, PU
Input, PD
BT_VDDIO
BT_DEV_WAKE
I/O
Y
Input/Output; PU, PD, NoPull
(programmable)
Input; PU, PD, NoPull
(programmable)
High-Z, NoPull
Input, PD
Input, PD
BT_VDDIO
BT_GPIO 2, 3, 4, 5 I/O
Y
Input/Output; PU, PD, NoPull
(programmable)
Input/Output; PU, PD, NoPull
(programmable)
High-Z, NoPull
Input, PD
Input, PD
BT_VDDIO
BT_UART_CTS
I
Y
Input; NoPull
Input; NoPull
High-Z, NoPull
Input; PU
Input; PU
BT_VDDIO
BT_UART_RTS
O
Y
Output; NoPull
Output; NoPull
High-Z, NoPull
Input; PU
Input; PU
BT_VDDIO
BT_UART_RXD
I
Y
Input; PU
Input; NoPull
High-Z, NoPull
Input; PU
Input; PU
BT_VDDIO
BT_UART_TXD
O
Y
Output; NoPull
Output; NoPull
High-Z, NoPull
Input; PU
Input; PU
BT_VDDIO
SDIO Data
I/O
N
Input/Output;
PU (SDIO Mode)
Input; PU (SDIO Mode)
High-Z, NoPull
Input; PU (SDIO Mode)
Input; PU (SDIO Mode) VDDIO_SD
SDIO CMD
I/O
N
Input/Output;
PU (SDIO Mode)
Input; PU (SDIO Mode)
High-Z, NoPull
Input; PU (SDIO Mode)
Input; PU (SDIO Mode) VDDIO_SD
SDIO_CLK
I
N
Input; NoPull
Input; noPull
High-Z, NoPull
Input; noPull
Input; noPull
VDDIO_SD
BT_PCM_CLK
I/O
Y
Input; NoPull
3
Input; NoPull
High-Z, NoPull
Output
Input, PD
BT_VDDIO