DWC-HD
Rev.
2
Block Blk
#
Commands Example Response
Control
switch.
0: Through mode (re-clocked only)
1: Processed mode (from FPGA)
Video DAC output select
cho
17 pos man <k>
cho 17 pos man 0
size 2 man
k
This change over has only manual
mode and works as a simple 2:1
switch.
cho 17 pos man 1
0: Through mode (re-clocked only)
1: Processed mode (from FPGA)
Audio embedding enable for SD
cho
18 pos man <k>
cho 18 pos man 0
size 2 man
k
cho 18 pos man 1
This change over has only manual
mode and works as a simple 2:1
switch.
0: embedding off (Audio embedded
on input signal left untouched)
1: Embedding on
Color space conversion on/off
cho
19 pos man <k>
cho 19 pos man 0
size 2 man
k
cho 19 pos man 1
0: no conversion
1: color space conversion from HD to
SD
rcl
0
-
rcl 0
lock | lol
Reclocker. No control; only used to
report
lock status.
Audio embedder block
emb
0-3 en | dis
emb 0 en
(en | dis) use24 (on
| off) acp (on | off)
del (off | (on
<del12> <del34>))
en/dis:
Enables or disables the
embedding of the group into the
ancillary area.
emb 2 dis
acp ( on | off )
emb 1 acp on
emb 3 acp off
use24 ( on | off )
emb 1 use24 on
acp on/off:
This is valid only for SD
and enables the audio control
package.
emb 2 use24 off
del (off | (on <del12>
<del34>))
emb 0 del off
emb 2 del on 54 -432
use24 on/off:
This is only valid for
SD and selects between 24bit and
20bit sound.
del off/on delay12 delay34:
For
each of the embedder groups the
delay bits for ch1+2 and for ch3+4
can be inserted into the ACP. The
delay value can be positive and
negative and is put directly into the
ACP as it is written.
Note: To set both delays to 0 would
be the same as turning the delays off.
The response reflects this.
Audio de-embedders
demb 0-3
-
demb
0
grp
k
en
demb 2
one permanently assigned to each
incoming group, always enabled. No
control available.
scale 0 asp
<aspect_ratio>
out
<video_standard>
asp <aspect>
Set down-converter aspect ratio.
Supported aspect ratios at the
moment are “16/9”, “16/9lb” and
“4/3”. Video standard output from the
scaler block is also included (576/25i
or 486/29i, selected based on
incoming video standard). Video
standard information is duplicated in
info.
Note: converter is always present
and active. The user must use cho
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