Pcm Format; Figure 26 - Sdif-2 Pcm Format At 96 Ks/S - DCS 900E User Manual

dCS 900E / 902E User Manual
dCS Ltd
SDIF-2

PCM Format

The SDIF-2 interface is a 4 wire NRZ interface - so the DC level on each signal
line may not be constant. It contains 20 bits of audio data and has a block
structure of 256 stereo samples, rather than the 192 of AES/EBU. There are 8
bits of message per channel per sample - with a further 3 bits being used for an
"illegal code" based sync code. Of the 8 bits per sample, the 8 in the first sample
are reserved for system messaging, and the rest are for User messages.
The 4 wires are:
Ground return
Left Channel
Right Channel
Word Clock
The sync codes can enable data recovery without the word clock, if necessary,
but with the number of data formats in current operation, this method of locking
is strongly discouraged. The waveforms below are SDIF-2 waveforms (data and
word clock) at 96kS/s and 44.1kS/s.
Manual part no: DOC0029021E1
Contact on + 44 1799 531 999
dCS
(inside the UK replace + 44 with 0)
All manuals and user guides at all-guides.com
-
Figure 26 – SDIF-2 PCM format at 96 kS/s
Page 46
Manual for Software Versions 1.3x to 1.5x
Document No: OS-MA-D0002-902.1E1
email to: more@dcsltd.co.uk
web site: www.dcsltd.co.uk
th
12 June 2000