STA310 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STA310' PDF : 90 Pages View PDF
4.10 What Can Be Processed at the Same Time
Same Time 1
STA310
Decoder
MPEG1
MP3
AC3
MPEG2
LPCM Video
PCM
MLP
LPCM Audio
PinkNoise
Beep Tone
Commands
Mute
Skipframe
Pause
Pause block
S/PdifOutput
Post
Bass
Pcrocessing Management
Volume Control PCM (Lef,tRight
PCM (VCRs)
Encoded
Mute
Off
Same Time 2
Post
Post
Pcrocessing Pcrocessing
Post
Post
Pcrocessing Pcrocessing
Prologic
Karaoke
Channel Delay
Karaoke
Channel Delay Karaoke
Channel Delay
5 PCM OUTPUT CONFIGURATIONS
5.1 Output configurations
The figure below shows the different configurations supported at PCM output stage. They are selected by the
OCFG register contents.
- In configuration 1, 3 and 4, the main channels are attenuated by 18.5dB, and the LFE by 8.5dB before
summing.
After digital/analog conversion, the subwoofer preamplifier has to compensate for the different gains
of the main channels and subwoofer.
- In configuration 2, the main channels are attenuated by 16dB and the LFE by 6dB before processing.
- In configuration 0, outputs are only scaled and rounded (see next section).
The same configurations will be used in case of a decoded Pro Logic program with the exception that the sur-
round channels will not be added to the bass redirection (the surround channels of a Pro Logic program are
band limited and bass is considered as leakage).
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