User manual

6–4 • Specifications MUX-6258-A Series User Manual (Iss. 04)
Channel Status Data Table
The following table shows the channel status bit information that is used for all output audio.
Passing the Status Bytes
The MUX-6258-A series card replaces Channel Status Bytes according to Table 6.2 or passes
Status Bytes through from input to output. The following conditions must be met for Status Bytes
to pass:
• AES inputs must be 48kHz synchronous
• SRC is set to OFF
• Data Word Length in the Channel Status Bytes must match what is embedded
Table 6.2 Channel Status Data
Byte Bit Function Transmitted
0
0
Professional or Consumer use of Channel
Status Block
Professional (1)
1 Normal Audio or Non-Audio Mode Normal Audio (0)
2-4 Emphasis No Emphasis (100)
5 Lock Indication Locked (0)
6-7 Sampling Rate 48kHz (01)
1
0-3 Channel Mode 2 channel stereo (0001)
4-7 User Bit Mode 192-bit (0001)
2
0-2 Auxiliary Bit Usage 20-bit audio sample, Aux bits undefined (000)
3-5 Sample Word Length 20- or 24-bits (101)
6-7 Alignment Level Not Indicated (00)
3
0-7 Multi-channel Modes Undefined (0)
4
0-1 Digital Audio Reference Signal Not a Reference (0)
2 Reserved 0
3-6 Sampling Frequency Not Indicated (0000)
7 Sampling Frequency Scaling Flag No Scaling (0)
5
0-7 Reserved Unused (0)
6-9
ASCII Source ID Unused (0)
10-13
ASCII Destination ID Unused (0)
14-17
Local Sample Address Unused (0)
18-21
Time of Day Unused (0)
22
0-7 C Data Reliability
Only the first 5 Status Bytes are marked as Reliable
All other Status Bytes are marked as Unreliable
23
0-7 CRC Calculated CRC