Voltage Regulators; Voltage Monitor - Reset Generator; Leds; Power - Digi Connect Wi-Wave 802.11 b/g Hardware Reference Manual

V o l t a g e r e g u l a t o r s
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V o l t a g e m o n i t o r — R e s e t g e n e r a t o r
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L E D S
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P o w e r
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DISABLE signal

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The module takes in 3.3V±9% (3.00V to 3.60V) as its main input power. This power is
filtered and used as a 3.3V supply to portions of the digital logic. This power also
acts as input to dedicated on-board voltage regulators.
The module provides a voltage monitor or automatic reset signal generator; but the
module can also set into reset with the RESET pin on the edge connector.
The module does not have any on-board LEDs, but it drives the LED_WLAN# signal
(pin 44) to indicate WLAN association and transmit/receive activity. This table
shows the different LED states:
LED state Indication
Off Not powered on
On Associated and authenticated
Slow blink Not associated or authenticated
Intermittent blink Transmit/receive activity
The module requires only +3.3 VDC, 600 mA max. This power must be a well-
regulated +3.3V supply due to limited supply filtering in the module. The digital
inputs and outputs are 3.3V CMOS compatible. See "Power requirements" on
page 31 for specifications.
The module supports the active low
Express Mini Card Electromechanical Specification. This signal not only disables the
power supplies to the radio portion of the module, it also powers down additional
portions of the module to reduce power consumption to a minimum.
signal (pin 20) as specified in the PCI
W_DISABLE#
A B O U T T H E M O D U L E

Voltage regulators

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