Huawei ME909s Series - Page 30

HUAWEI ME909s Series LTE Mini PCIe Module
Hardware Guide
Description of the Application Interfaces
Issue 02 (2016-09-07)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
30
Figure 3-14 Circuit diagram of the interface of the PCM (ME909s Mini PCIe module is
used as PCM master)
Figure 3-15 Circuit diagram of the interface of the PCM (ME909s Mini PCIe module is
used as PCM slave)

The signal level of CODEC must match that of the module.

ME909s Mini PCIe module supports both master and slave mode.

PCM_SYNC: Output when PCM is in master mode; Input when PCM is in slave mode.

PCM_CLK: Output when PCM is in master mode; Input when PCM is in slave mode.

It is recommended that a TVS be used on the related interface, to prevent electrostatic
discharge and protect integrated circuit (IC) components.