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12. I/O States

Table 12
provides I/O state information for the signals listed.
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 12. I/O States
Ball Name
I/O
Keeper
HIB_REG_ON_IN
I
N
REG_ON
I
N
GPIO_0
I/O
Y
GPIO_1
I/O
Y
GPIO_2
I/O
Y
GPIO_3
I/O
Y
GPIO_4
I/O
Y
GPIO_5
I/O
Y
Document Number: 002-14826 Rev. *G
Table
12:
1
Active Mode
Input; PD (Pull-down can be
disabled.)
Input; PD (Pull-down can be
disabled.)
Input/Output; PU, PD, or
NoPull (programmable
[Default: PD])
Input/Output; PU, PD, or
NoPull (programmable
[Default: NoPull])
Input/Output; PU, PD, or
NoPull (programmable
[Default: NoPull])
Input/Output; PU, PD, or
NoPull (programmable
[Default: PD])
Input/Output; PU, PD, or
NoPull (programmable
[Default: NoPull])
Input/Output; PU, PD, or
NoPull (programmable
[Default: PD])
PRELIMINARY
Low Power State/Sleep (All
Power Present)
Input; PD (Pull-down can be
disabled.)
Input; PD (Pull-down can be
disabled.)
Input/Output; PU, PD, or NoPull
(programmable [Default: PD])
Input/Output; PU, PD, or NoPull
(programmable [Default:
NoPull])
Input/Output; PU, PD, or NoPull
(programmable [Default:
NoPull])
Input/Output; PU, PD, or NoPull
(programmable [Default: PD])
Input/Output; PU, PD, or NoPull
(programmable [Default:
NoPull])
Input/Output; PU, PD, or NoPull
(programmable [Default: PD])
Out-of-Reset; Before
2
Power-down
Software Download
(REG_ON Held Low)
(REG_ON High)
Input
Input
Input; PD (of 200 kΩ) Input; PD (of 200 kΩ)
High-Z, NoPull
Input; PD
High-Z, NoPull
Input; NoPull
High-Z, NoPull
Input; NoPull
High-Z, NoPull
Input; PD
High-Z, NoPull
Input; NoPull
High-Z, NoPull
Input; PD
CYW43903
Power Rail
VDDIO
VDDIO
VDDIO
VDDIO
VDDIO
VDDIO
Page 38 of 65

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