Led Output - Sierra Wireless MC5725 Hardware Integration Manual

CDMA and GSM / UMTS Mini Card Hardware Integration Guide
64
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.
frames) to the module. These tokens keep the module
awake and cause unnecessary power consumption.

LED output

The module drives the LED output according to the PCI‐
Express Mini Card specification (summarized in Table 5‐2,
below).
Table 5-2: LED states
State
Off Module is not
powered.
On Module is powered
and connected, but
not transmitting or
receiving.
Slow blink Module is powered
and searching for a
connection.
Module is
Faster blink
transmitting or
receiving.
Proprietary and Confidential
Indicates Characteristics
Light is off.
Light is on.
LED is flashing at a
steady, slow rate.
• 250 ms ± 25% ON
period
0.2 Hz ± 25% blink
•
rate
LED is flashing at a
steady, faster rate.
• Approximately 3 Hz
blink rate
Note: MC572x modules
support customer-defined
LED controls.
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