Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Data Sheet
Product codes
AT91SAM9M10-G45-EK
1248
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
46.10.4
Decoder Control Register 0 (Decoder Mode And Picture Type)
Name:
VDEC_CTLR0
Address:
0x0090000C
Access:
Read-write
• HLOCK: HLOCK Enable
0: Locked transfers disabled.
1: Locked transfers enabled.
When a locked transfer is granted, bus grant cannot be lost even if a higher priority master requests the bus.
• REFFIRST: Reference Field First
Indicates which FWD reference field has been decoded first.
0: FWD reference bottom field.
1: FWD reference top field.
• MV: MPEG-2 Motion Vector Write Enable
Direct mode motion vector write enable / MPEG2 motion vector write enable for error concealment purposes:
0: Writing disabled for current picture.
1: The direct mode motion vectors are written to external memory starting from MV_BASE in Direct mode motion vector
write/read base address register (offset 0x00a8).
write/read base address register (offset 0x00a8).
• QUANT: Quantization
0: Quantization parameter can vary inside picture.
1: Quantization parameter is fixed (pquant).
• FILTDIS: De-block Filtering Disable
0: Filtering is enabled for current picture.
1: Filtering is disabled for current picture.
• OUTDIS: Disable Decoder Output Picture Writing
0: Decoder output picture is written to external memory.
1: Decoder output picture is not written to external memory.
• FORWMODE: Coding Mode Of Forward Reference Picture
0: Progressive
1: Interlaced
31
30
29
28
27
26
25
24
DEC_MODE
–
–
–
–
23
22
21
20
19
18
17
16
PICMODE
PICSTRUCT
PICBEN
PICTYPE
PICFIELD
FORWMODE
–
–
15
14
13
12
11
10
9
8
OUTDIS
FILTDIS
QUANT
MV
REFFIRST
–
–
HLOCK
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
–