52
AS-3981-AD Installation and Operation Manual
Appendix B: Manipulating Audio Bits
Channel Status Bits
Table B-1.
C-Bit Manipulation
Byte
Bit
Function
RX TX
Remarks
0
0
[0] Consumer Use
[1] Professional Use
N
Y
N
Y
Set to [1]
0
1
[0] Audio
[1] Non-Audio
S
S
Y
Y
Passed unmodified
0
2 to 4
[000] Not Indicated
[100] No Emphasis
[110] 50/15 µs
[111] CCITT J.17
S
S
S
S
Y
Y
Y
Y
Passed unmodified
0
5
[0] Locked
[1] Unlocked
N
N
Y
N
Set to [0]
0
6 to 7
[00] Not Indicated
[01] 48 kHz
[10] 44.1 kHz
[11] 32 kHz
Y
Y
Y
Y
N
Y
N
N
Set to [01]
1
0 to 3
[0000] Not Indicated
[0001] Two Channel
[0010] Mono
[0011] Prim/sec
[0100] Stereo
[0101] to [1111] Undefined
N
N
N
N
N
N
Y
N
N
N
N
N
Set to [0]
1
4 to 7
[0000] Not Indicated
[0001] 192 Bit Block
[0010] AES18 (HDLC)
[0011] User Defined
[0100] to [1111] Undefined
S
S
S
S
S
Y
Y
Y
Y
Y
Passed unmodified
2
0 to 2
[000] Not Indicated
[001] Audio Data
[010] Co-ordination Signal
[011] to [111] Undefined
N
N
N
N
Y
Y
N
N
Set to [001] if 24 bits;
otherwise set to [000]
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