User's Manual

FLC-BTM805 Datasheet
Flaircomm Microelectronics Confidential
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4.3.2 Digital Audio Interface (I
2
S)
The digital audio interface supports the industry standard formats for I
2
S, left-justified or right-
justified. The interface shares the same pins as the PCM interface, which means each audio bus is
mutually exclusive in its usage. Table 9 lists these alternative functions. Figure 14 shows the timing
diagram.
PCM Interface
I
2
S Interface
PCM_OUT
SD_OUT
PCM_IN
SD_IN
PCM_SYNC
WS
PCM_CLK
SCK
Table 10: Alternative Functions of the Digital Audio Bus Interface on the PCM Interface
Configure the digital audio interface using the PSKEY_DIGITAL-AUDIO-CONFIG, see your PS Key file.