BCM43903 Datasheet, PDF (55/87 Pages) Cypress Semiconductor – WICED™ IEEE 802.11 b/g/n SoC with an Embedded Applications Processor

BCM43903 Preliminary Data Sheet
I/O States
Section 12: I/O States
Table 11 provides I/O state information for the signals listed.
The following notations are used in Table 11:
• 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 11: I/O States
Ball Name
I/O
HIB_REG_ON_IN I
REG_ON
I
GPIO_0
I/O
GPIO_1
I/O
GPIO_2
I/O
GPIO_3
I/O
Keeper^a Active Mode
Low Power State/Sleep Power-down^b
(All Power Present) (REG_ON Held Low)
N
Input; PD (Pull-down can Input; PD (Pull-down can Input
be disabled.)
be disabled.)
N
Input; PD (Pull-down can Input; PD (Pull-down can Input; PD (of 200 kΩ)
be disabled.)
be disabled.)
Y
Input/Output; PU, PD, or Input/Output; PU, PD, or High-Z, NoPull
NoPull (programmable NoPull (programmable
[Default: PD])
[Default: PD])
Y
Input/Output; PU, PD, or Input/Output; PU, PD, or High-Z, NoPull
NoPull (programmable NoPull (programmable
[Default: NoPull])
[Default: NoPull])
Y
Input/Output; PU, PD, or Input/Output; PU, PD, or High-Z, NoPull
NoPull (programmable NoPull (programmable
[Default: NoPull])
[Default: NoPull])
Y
Input/Output; PU, PD, or Input/Output; PU, PD, or High-Z, NoPull
NoPull (programmable NoPull (programmable
[Default: PD])
[Default: PD])
Out-of-Reset; Before
Software Download
(REG_ON High)
Input
Input; PD (of 200 kΩ)
Input; PD
Input; NoPull
Input; NoPull
Input; PD
Power Rail
–
–
VDDIO
VDDIO
VDDIO
VDDIO
Broadcom^®
March 12, 2016 • 43903-DS102-R
BROADCOM CONFIDENTIAL
Page 54