User's Manual

LE940B6 Hardware User Guide

1VV0301331 Rev. 1.8 - 2017-03-15

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11. Application Guide

11.1. Debug of the LE940B6 Module in Production

To test and debug the mounting of the LE940B6 module, we strongly recommend to add several

test pads on the application board design for the following purposes:

• Checking the connection between the LE940B6 itself and the application

• Testing the performance of the module by connecting it with an external computer

Depending on the customer application, these test pads include, but are not limited to the

following signals:

• TXD

• RXD

• ON_OFF_N

• SHUTDOWN_N

• RESET_N

• GND

• VBATT

• VAUX/PWRMON

• TXD_AUX

• RXD_AUX

• USB_VBUS

• USB_D+

• USB_D-

• Signals for analysis