Chapter 2: Hardware Interface Description
May 31, 2008 Module Hardware Description 25
Audio InterfaceW24 incorporates Audio interface intended to support G24 Audio interface, in stacked
configuration. The interface consists of the following pins (see Table 2 -8 for analog audio and
Table 2 -9 for digital audio):
The above signals are routed from 70-pin host connector to G24 70-pin connector via W24. They
are not internally connected to W24 circuits. If the W24 will be used as stand alone only, the
above pins should be left open.
For more details on implementing a Audio interface for use with G24, please refer to the
"Motorola G24 Developer's Guide - Module Hardware Description" PN 6889192V27
Table 2-8:Analog Audio Interface Signals
Pin # Pin Name Description
55 HDST_INT_N Headset detect interrupt
57 HDST_MIC Headset microphone input
59 AGND Audio ground
61 MIC Microphone input
63 ALRT_N Alert speaker inverted
65 ALRT_P Alert speaker
67 SPKR_N Speaker inverted
69 SPKR_P Speaker
Table 2-9:Digital Audio Interface Signals
Pin # Pin Name Description
18 PCM_DIN Digital audio receive
20 PCM_DOUT Digital audio transmit
22 PCM_CLK Digital audio clock
24 PCM_FS Digital audio clock