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The 6uaes/422 mezzanine board provides three separate
physical interfaces between the tdm buses of a vme6u6
baseboard and external equipment:
- aes/ebu or s/pdif digital pro-audio input/output
- Stereo audio output
- rs422 general purpose serial digital input/output
6UAES/422 mezzanine board.
AES/EBU Input
- Crystal Semiconductor CS8412
- Selectable 110 or 75 ohm
- Transformer coupled
- Receiver Lock LED
- Sampling frequency LEDs
- Audio data read through TDM buses
- C,U,V available to host or to TDM buses
- Locks to 32, 44.1 or 48 kHz input
AES/EBU Output
- Crystal Semiconductor CS8402A
- Selectable 110 or 75 ohm
- Transformer coupled
- Audio data taken from TDM buses
- C, U, V set by host or through TDM buses
- Locked to receiver sampling rate or set
independently to 32, 44.1 or 48 kHz
RS422 Digital Input/Output
- Emulates dsp32c serial port
- Transmit/Receive data from TDM buses
- 8/16/32-bit data items
- Independent transmit/receive sections
- Internal or external clocking up to 12
Mbps
- Internal, external or no I/O frame sync
- rs422 or mil-std-188-114 signal levels
- Intended for use with 100 ohm cable
Stereo Audio Output
- Crystal Semiconductor CS4330
- Selectable audio data source:
 Monitor aes/ebu input
data
Monitor aes/ebu
output data
- 4 volts peak-to-peak full-scale output
- 16 or 18-bit resolution, 0.003% typ THD
- Sampling rate 32,44.1 or 48 kHz
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