CYW4343X
Table 25. Chip Debug Options (Cont.)
BT PCM I/O Pad
Function
JTAG_SEL
GPIO_2
GPIO_1
Function
SDIO I/O Pad Function
0
0
1
1
0
1
JTAG over BT PCM
SDIO
SDIO
JTAG
SWD over GPIO_1/
GPIO_2
BT PCM
14.11 I/O States
The following notations are used in Table 26 on page 87:
■
■
■
■
■
■
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 26. I/O Statesa
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
WL_REG_ON
BT_REG_ON
CLK_REQ
I
N
N
Y
Input; PD (pull-down can Input; PD (pull-down can Input; PD (of 200K)
be disabled) be disabled)
Input; PD (200k)
Input; PD (200k)
–
–
I
Input; PD (pull down can Input; PD (pull down can Input; PD (of 200K)
be disabled) be disabled)
Input; PD (200k)
Input; PD (200k)
Input; PD (200k)
–
I/O
Open drain or push-pull Open drain or push-pull PD
(programmable). Active (programmable). Active
Open drain,
active high.
Open drain,
active high.
Open drain,
active high.
WCC_VDDIO
high.
high
BT_HOST_
WAKE
I/O
Y
Y
I/O; PU, PD, NoPull
(programmable)
I/O; PU, PD, NoPull
(programmable)
High-Z, NoPull
High-Z, NoPull
–
–
Input, PD
Input, PD
Output, Drive low
Input, PD
WCC_VDDIO
WCC_VDDIO
BT_DEV_WAKE I/O
I/O; PU, PD, NoPull
(programmable)
Input; PU, PD, NoPull
(programmable)
BT_UART_CTS
BT_UART_RTS
BT_UART_RXD
BT_UART_TXD
I
Y
Y
Y
Y
N
Input; NoPull
Output; NoPull
Input; PU
Input; NoPull
Output; NoPull
Input; NoPull
Output; NoPull
High-Z, NoPull
High-Z, NoPull
High-Z, NoPull
High-Z, NoPull
–
–
–
–
Input; PU
Input; PU
Input; PU
Input; PU
Input, NoPull
Output, NoPull
Input, NoPull
Output, NoPull
Input; PU
WCC_VDDIO
WCC_VDDIO
WCC_VDDIO
WCC_VDDIO
WCC_VDDIO
O
I
O
Output; NoPull
SDIO_DATA_0 I/O
SDIO MODE -> NoPull SDIO MODE -> NoPull SDIO MODE -> NoPull SDIO MODE -> PU
SDIO MODE ->
NoPull
SDIO_DATA_1 I/O
N
SDIO MODE -> NoPull SDIO MODE -> NoPull SDIO MODE -> NoPull SDIO MODE -> PU
SDIO MODE ->
NoPull
Input; PU
WCC_VDDIO
Document No. 002-14797 Rev. *H
Page 87 of 128
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