Output Signal Control Pin - Huawei MC509 Series Hardware Manual

HUAWEI MC509 Series CDMA LGA Module
Hardware Guide
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.
Issue 02 (2013-05-06)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Description of the Application Interfaces
29