User's Manual

50
Type ‘a’ messages for Audio commands
Function
R/W
Block
Command
Data
Type
Audio
Encoder
r/w
a
enc
1 byte
0 = Off
1 = 32kHz,12cbit,S
2 = 32kHz,12cbit,M
3 = 32kHz,8cbit,S
4 = 32kHz,8cbit,M
5 = 16kHz,8cbit,S
6 = 16kHz,8cbit,M
7 = 8kHz,8cbit,S
8 = 8kHz,8cbit,M
9 = 32kHz MPEG
Layer1 stereo
10 = 32kHz MPEG
Layer1 mono
11 = 48kHz MPEG
Layer1 stereo
12 = 48kHz MPEG
Layer1 mono
13 = 32kHz MPEG
Layer2 stereo
14 = 32kHz MPEG
Layer2 mono
15 = 48kHz MPEG
Layer2 stereo
16 = 48kHz MPEG
Layer2 mono
int
Audio Input
Level
r/w a lev 1byte
0 = 0dB (line level)
1= 12dB (mic level)
2 = 24dB(mic level)
3 = 36dB(mic level)
4 = 48dB(mic level)
and 4 also enables
ALC
int
MPEG
Layer 1
Audio Bitrate
r/w
a
mpr (for
channel 1)
mp2 (for
channel 2)
1byte
2 = 64kbit
3 = 96kbit
4 = 128kbit
5 = 160kbit
6 = 192kbit
7 = 224kbit
8 = 256kbit
9 = 288kbit
10 = 320kbit
11 = 352kbit
12 = 384kbit
13 = 416kbit
14 = 448kbit
int
MPEG
Layer 2
Audio Bitrate
2 = 48kbit
3 = 56kbit
4 = 64kbit
5 = 80kbit
6 = 96kbit
7 = 112kbit
8 = 128kbit
9 = 160kbit
10 = 192kbit
11 = 224kbit
12 = 256kbit
13 = 320kbit
14 = 384kbit
Audio PID 1
r/w
a
pd1
0 = default
Other = value
int
Audio PID 2
r/w
a
pd2
0 = default
Other = value
int
Audio DID
SDI Data
Identifier
r/w a did DID value int
Audio 2
enable
r/w
a
en2
0 = disabled
1 = enabled
2 = input2 to input1
int