Interphase Tech 4538 MP3 Player User Manual


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TDM Bus Configurations
42 Interphase Corporation
Independent Direct Mode
In this mode, PA(7) = SWMODE_N = 1 and PA(0) = COMCLK_N = 1.
In independent direct mode, each framer can have its own rhythm. Each QuadFALC TDM
bus is directly tied to a CPM TDM bus and has its own clock and frame synchronization
signal provided by the QuadFALC. In NT mode, each framer can synchronize on an
external network reference clock provided on connector P4.
Figure 1-12, Figure 1-13, and Figure 1-14 show the specific implementation of this mode.
Grey lines indicate unused connections.
Table 1-31. TDM and Synchronization Signals in Independent Direct Mode
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