HDX6800
+
B2/C2 and HDX6800
+
B4/C4 Installation and Operation Manual
65
Appendix A: Audio Bit Manipulation
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
• RX ignores bits
• TX passes bits
unmodified
2
0 to 2
[000] Aux. bit use is not indicated
[001] Aux. bit use is audio data
[010] Aux. bit use is co-ordination
signal
[011] to [111] Undefined
N
N
N
N
Y
Y
N
N
• RX ignores bits
• TX sets bits according to
transmitted word length
2
3 to 5
[000] Not indicated
[001] Max Length - 1
[010] Max Length - 2
[011] Max Length - 3
[100] Max Length - 4
[101] Max Length
[110] to [111] Undefined
N
N
N
N
N
N
N
N
N
N
N
Y
Y
N
• RX ignores bits
• TX sets bits according to
transmitted word length
2
6 to 7
[00] Alignment level not indicated
[01] Alignment to SMPTE RP155
[10] Alignment to EBU R68
11] Reserved
N
Y
• RX ignores bits
• TX sets bits to [00]
3
0 to 6
bit 7 = 0: Channel number
bit 7 = 1: [0,1,2,3] Channel number
[4,5,6] Multi-channel mode
N
Y
• RX ignores bits
• TX sets bits to [0000000]
3
7
[0] Undefined multi-channel mode
[1] Defined multi-channel mode
N
Y
• RX ignores bits
• TX sets bits to [0]
4
0 to 1
[00] Not a reference
[01] Grade 1 reference
[10] Grade 2 reference
[11] Undefined
N
N
N
N
Y
N
N
N
• RX ignores bits
• TX sets bits to [00]
4
2
Reserved
N
Y
• RX ignores bits
• TX sets bits to [0]
Table A-2.
Channel Status (C-Bits) Data Description
(Continued)
Byte
Bit
Function
RX
TX
Remarks
