7. Programmer’s Reference
MX-FR Series Modular Matrix Frames – User's Manual
122
Applied CPU2 firmware: v3.5.7b8 | LDC software: v2.5.17b2
Parameters
<
info
>
block
The signal info block contains general information about the signal. The first character of this block is
S
.
Format:
S
<a><b><c><d>
Identifier
Parameter Description
Parameter Values
<
a
>
5V power presence
0
= 5V is not present
1
= 5V is present
<
b
>
Signal detection
0
= no valid signal on the input
1
= active video signal is present
<
c
>
DV/HDMI mode indicator
0
= DVI mode
1
= HDMI mode (24 bpp)
2
= HDMI mode (30 bpp), deep color
3
= HDMI mode (36 bpp), deep color
<
d
>
HDCP state
0
= HDCP encryption is disabled
1
= HDCP encryption is active
Example:
S1131
#hdcp
5V and active video signal is present in HDMI deep color mode (36 bpp), HDCP is active.
<
video
>
block
INFO:
This block is present only if a valid video signal is present on the selected port.
The resolution, refresh rate, scan mode, and color space information are described in this block The first
character of this block is V.
Format:
V
<Resolution>
,
<Hsync>
,
<Color_space>
Example:
V1920x1080p60,675,00
Identifier
Parameter Description
Parameter Values
<
Resolution
> <
Width
>x<
Height
><
Scan
><
Vsync
>
<
Width
> = active video width (pixels)
<
Height
> = active video height (pixels)
<
Scan
> =
p:
progressive,
i:
interlaced scan mode
<
Vsync
> value (Hz)
<
Hsync
>
Horizontal sync
<
Hsync
> value (kHz)
<
Color_
space
>
Color space information
00
= RGB444
10
= YUV422
20
= YUV444
1080p60 signal is detected with progressive scan at 60 Hz refresh rate; vertical sync value is 675 kHz and
the signal is in RGB 4:4:4 color space.
<
audio
>
block
#audio
INFO:
This block is present only if a valid video signal is present on the selected port.
The audio info block determines the type of the audio, the decoded sampling frequency and some further
information extracted from Audio InfoFrames. The first character of this block is A.
Format:
A
<a><b><c><d><ee><ff>
Identifier
Parameter Description
Parameter Values
<
a
>
Audio type
0
= no audio data is present
1
= PCM audio
2
= Compressed audio
4
= High bitrate audio
<
b
>
Sampling frequency
A
= 44.1 kHz
C
= 48 kHz
D
= 32 kHz
E
= 22.05 kHz
G
= 24 kHz
I
= 88.2 kHz
J
= 768 kHz
K
= 96 kHz
M
= 176.4 kHz
O
= 192 kHz
B
= no information
<
c
>
Audio codec type
(not specified in many
cases)
0
= undetermined
1
= IEC 60958PCM
2
= AC3
3
= MPEG-1 (Layers 1&2)
4
= MP3 (MPEG-1 Layer 3)
5
= MPEG-2 (multichannel)
6
= AAC
7
= DTS
8
= ATRAC
9
= One Bit Audio
A
= Dolby Digital
B
= DTS-HD
C
= MLP
<
d
>
Audio channel number
0
= not specified
0..7
= channel number is equal to (<d>+1)
<
ee
>
Sampling frequency and
sample size (encoded
in HEX format and
represented by binary
format)
7-5 bits:
reserved and shall
be 0 (zero)
4-2 bits:
000
= unspecified
001
= 32 kHz
010
= 44.1 kHz
011
= 48 kHz
100
= 88.2 kHz
101
= 96 kHz
110
= 176.4 kHz
111
= 192 kHz
1-0 bits:
00
= not specified
01
= 16 bit
10
= 20 bit
11
= 24 bit
example:
0F =
000 011 11
48 kHz sampling frequency and 24 bit sample length
<
ff
>
Speaker locations
(See the following table
for the possible values)
This byte describes how various speaker locations are allocated
to the audio channels:
FR/FL
= Front Right / Front Left
LFE
= Low-frequency effect
FC/RC
= Front Center / Rear Center
RR/RL
= Rear Right / Rear Left
FRC/FLC
= Front Right Center / Front Left Center
RRC/RLC
= Rear Right Center / Rear Left Center
