Datasheet

1223
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
46.9.8 Decoder Control Register 4 (VC-1 Control)
Name: VDEC_CTLR4
Address: 0x0090001C
Access: Read-write
• VC1_ADV: VC-1 Advance Profile
1: VC-1 advanced profile enable.
• DQUANT: Data Quantization
Does quantization parameter change inside frame enable:
0: PQUANT used throughout.
1: Yes.
• TTFRM: VC-1 Frame Level Transformation Type
0: 8x8 transform
1: 8x4 transform
2: 4x8 transform
3: 4x4 transform
• HALFQP: Inverse Quantization
1: HALFQP enable. Used for VC-1 inverse quantization.
• UNIQ: Uniform Quantization
1: Uniform quantizer enable. Used for VC-1 inverse quantization.
• BILIN: Bilinear Enable
Bilinear motion compensation enable:
0: Bicubic interpolation used.
1: Bilinear interpolation used.
• PQ_INDEX: Pre Quantization index
Value of pqindex, used for forming pquant.
• TTMBF: TTMB Flag
0: TTMB is present in MB header.
1: TTFRM syntax element exists in the picture layer. TTMB is not present.
31 30 29 28 27 26 25 24
BIT_PLAN0 BIT_PLAN1 BIT_PLAN2 ALT_PQUANT
23 22 21 20 19 18 17 16
DQ_EDGES TTMBF PQ_INDEX
15 14 13 12 11 10 9 8
PQ_INDEX – BILIN UNIQ HALFQP TTFRM
76543210
– DQUANT VC1_ADV –––––