HUAWEI MC509 Series CDMA LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 02 (2013-05-06)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
29
Figure 3-7
Connection of W_DISABLE control pin
3.4.3
Output Signal Control Pin
The MC509 module provides a network status LED pin LED_STATUS and
LED_MODE. The pulse signal output through this pin controls the status LED on the
user interface board to display the network status. The LEDs are controlled by a
current sink. The high voltage is the voltage of VBAT (with the typical value of 3.8 V).
Different blinking modes of the status LED indicate different network status. Table 3-6
describes the status of the LED_STATUS pin and LED_MODE pin.