Huawei MU609 - LED_MODE Signal

HUAWEI MU609 HSPA LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 04 (2016-12-12)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
31
Figure 3-10 Connections of the SLEEP_STATUS pin
3.4.7 LED_MODE Signal
MU609 provides a LED_MODE signal to indicate the work status.
Table 3-7 State of the LED_MODE pin
No.
Operating Status
LED_MODE
1
No service/Restricted service
Outputs: low (0.1s)-high (0.1s)-low
(0.1s)-high (1.7s)
2s cycle
2
Register to the network
Outputs: low (0.1s)-high (1.9s)
2s cycle
3
Dial-up successfully
Outputs: low
External Circuits
Figure 3-11 shows the recommended circuits of the LED_MODE pin. According to
LED feature, you can adjust the LED brightness by adjusting the resistance of resistor
R. The mode indicator (LED_MODE) is current sink. Drive strength: 10mA.