Datasheet

1220
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
46.9.6 Decoder Control Register 2 (VC-1 Stream Decoding Table Selects)
Name: VDEC_CTLR2
Address: 0x00900014
Access: Read-write
• 4MV_TAB: 4MV Block Pattern
Block pattern table select in interlaced pictures when 4mv macroblock.
• 2MV_TAB: 2MV Block Pattern
Block pattern table select in interlaced pictures when 2mv macroblock.
• MB_TAB: MB Table Selection
In MB layer specifies which of four tables is used to decode the CPBCY data.
• MV_TAB: MV Table Selection
In MB layer specifies which table is used to decode the MV data.
Range:
0-3 for progressive content.
0-7 for interlaced content.
• MB_MODE_TAB: MB Mode Syntax Table Selection
MB mode syntax element table selection.
• YAC_TAB: Luma AC table
Specifies which of three table sets are used in decoding luma AC coefficients in block level.
• CAC_TAB: Chroma AC table
Specifies which of three table sets are used in decoding Chroma AC coefficients in block level.
• TDC_TAB: Transform DC table
Specifies in block level which of two tables is used to decode the Transform DC coefficients in intra-coded blocks.
• FAST_UVMC: Chroma Interpolation Accuracy
Information about chrominance interpolation accuracy (MVD):
0: 1/4pel chroma motion compensation is used.
1: 1/2pel chroma motion compensation is used.
• IS_REDU: Picture Range Reduction
31 30 29 28 27 26 25 24
STREAM_START_BIT SYNCMAREN Q_PROFILE
23 22 21 20 19 18 17 16
DQBI IS_REDU – FAST_UVMC – – TDC_TAB CAC_TAB
15 14 13 12 11 10 9 8
CAC_TAB YAC_TAB MB_MODE_TAB MV_TAB
76543210
MV_TAB MB_TAB 2MV_TAB 4MV_TAB