L64105 LSI Logic Corporation, L64105 Datasheet - Page 161

• Manufacturer Part Number: L64105
• Description: Mpeg-2 Audio/video Decoder
• Manufacturer: LSI Logic Corporation

Figure 4.119 Register 355 (0x163)
Start/Stop
Decoder
Audio
7
Audio Decoder Play Mode
6
MPEG Multichannel Extension Sync Word Missing
Reserved
Reserved
Audio Decoder Play Mode [1:0]
Audio Decoder Registers
[1:0]
5
This bit is set when the multichannel extension
synchronization word can not be found during the decode
process of the MPEG audio multichannel bitstream.
Reading this bit clears it.
Clear these bits when writing to this register.
Clear these bits when writing to this register.
In MPEG mode, these bits command the audio decoder
to pause, play at normal speed, play at a faster rate, or
play at a slower rate according to the following table.
During these modes the audio decoder presents 15/16 of
the normal frame data to the output PCM filter (fast) or
17/16 of the normal frame data to the output PCM filter
(slow) within 1 normal frame decode.
Audio Decoder Play
Mode Bits
0b00
0b01
0b10
0b11
The field is reset to pause mode. In pause mode, the
audio decoder stops parsing the bitstream and maintains
the current state so that reselecting normal play at a later
time does not cause the decoder to lose sync to the
bitstream. These bits are only valid when the Audio
Decoder Start/Stop bit in this register is set.
The Linear PCM Decoder responds as above except that
the rate for fast playback is 7/8 of normal and the rate for
slow playback is 9/8 times normal.
4
Description
Pause
Normal play
Decimate (fast)
Interpolate (slow)
Reserved
R/W [6:5]
0
[7:5]
[4:0]
4-79
R 4