Led_Mode Signal - Huawei MU709 Series Hardware Manual

HUAWEI MU709 Series HSPA+ LGA Module
Hardware Guide
Figure 3-10 shows recommended circuit of the SLEEP_STATUS pin.
Figure 3-10 Connections of the SLEEP_STATUS pin

3.4.7 LED_MODE Signal

MU709 module provides an LED_MODE signal to indicate the work status.
Table 3-7 State of the LED_MODE pin
No.
1
2
3
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: 10 mA.
Issue 09 (2017-12-15)
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Description of the Application Interfaces
LED_MODE
Outputs: low (0.1s)-high (0.1s)-low
(0.1s)-high (1.7s)
2s cycle
Outputs: low (0.1s)-high (1.9s)
2s cycle
Outputs: low
31