Datasheet
1128
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
46.6.8 Decoder Control Register 4 (H.264 Control)
Name: VDEC_CTLR4
Address: 0x0090001C
Access: Read-write
• FRAME_NUM: Frame Number
Current Frame Number, used to identify short-term reference frames. Used in reference picture reordering.
• FRAME_NUM_LEN: Frame Number length
Bit length of frame_num in data stream.
• W_BIPR: Weight Prediction for B Slices
H.264 weighted prediction specification for B slices.
• W_PRED: Weight Prediction
H.264 weighted prediction enable for P slices.
• DIRMV_PRED: Derive Luma Method
Specifies the method to use to derive luma motion vectors.
•BW: Black and White Enable
0: 4:2:0 sampling format
1: 4:0:0 sampling format
• CABAC: H.264 CABAC Enable
0: CABAC disable.
1: CABAC enable.
31 30 29 28 27 26 25 24
CABAC BW DIRMV_PRED W_PRED W_BIPR – –
23 22 21 20 19 18 17 16
– – – FRAME_NUM_LEN
15 14 13 12 11 10 9 8
FRAME_NUM
76543210
FRAME_NUM