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HUAWEI MC509 CDMA LGA Module |
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Hardware Guide | Description of the Application Interfaces |
It is recommended that use resistance of 0ohm in the DTE to isolate signals transmitted from above pins in Table
3.4.2 Input Signal Control Pins
The MC509 module implements
The
The POWER_ON_OFF pin is used to implement
The RESET pin is used to reset the hardware. When the software stops responding, the RESET pin can be pulled down for 100ms to reset the hardware.
As the RESET and POWER_ON_OFF signals are relatively sensitive, it is recommended that you install a 10nF capacitor near the RESET and POWER_ON_OFF pins of the interface for filtering. In addition, when you design a circuit on the PCB of the interface board, it is recommended that the circuit length not exceed 20mm and that the circuit be kept at a distance of 2.54mm (100mil) at least from the PCB edge. Furthermore, you need to wrap the area adjacent to the signal wire with a ground wire. Otherwise, the module may be reset due to interference.
Issue 01 | Huawei Proprietary and Confidential | 27 | |
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