BCM4390DKWBGT Datasheet, PDF (55/78 Pages) Cypress Semiconductor – WICED™ Wi-Fi IEEE 802.11 b/g/n SoC with Embedded Application Processor

BCM4390 Advance Data Sheet
I/O States
Table 10: I/O States (Cont.)
Name
I/O Keeper^a Active Mode
Power-down^b
Low Power State/Sleep (APPS_REG_ON and
(All Power Present) WL_REG_ON Held Low)
Out-of-Reset;
Before SW Download
(APPS_RST_N High;
WL_REG_ON High)
(WL_REG_ON High and
APPS_RST_N=0) and
VDDIOs Are Present
Power Rail
WL_REG_ON
IN
Input; PD (pull-down Input; PD (pull-down Input; PD (of 200K)
can be disabled)
can be disabled)
Input; PD (of 200K)
Input; PD (of 200K)
–
a. Keeper column: N = pad has no keeper. Y = pad has a keeper. Keeper is always active except in 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 (SDIO_CLK, for example).
b. In the Power-down state (xx_REG_ON=0): High-Z; NoPull => the pad is disabled because power is not supplied.
BROADCOM ®
February 5, 2014 • 4390-DS103-R
BROADCOM CONFIDENTIAL
WICED Wi-Fi IEEE 802.11 SoC w/Embedded App Processor
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