User's Guide

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Figure 2-6 The reference circuit of USIM interface
2.2.4. PCM interface
It can just support PCM(Optional). It can provide voice call by PCM ，using external audio codec . DWM-800A provides a
UART interface by MINI PCI-E for debug.
2.2.4.1. Description
PCM interfaces on the DWM-800A have been designed to be compatible with others so as to meet different needs. And we
can make corresponding configuration for interfaces on the DWM-800A according to customer's requirements. The
information about UART and PCM interfaces provided by DWM-800A is described in Table 2-4
Table 2-4 The connection between phone handle and the MINI PCI-E
SN. of MINI PCI-E
Compatible definition
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PCM_CLK