|
The purpose of
the GF Audio Evaluation Board is very simple: to
test and evaluate the BB192 with the DAISy CD and
SACD modules (GF8, GF6 or CD-Pro2LF), and
to
operate in a
stand-alone mode in connection with standard digital
audio interfaces
up to
192kHz/24 bits. It provides all necessary control
and interfaces to work directly with the
plug-in D/A module BB192.
As shown by
the functional diagram below, the GF Audio
Evaluation Board provides several digital inputs
(AES/EBU, S/PDIF, TOS Link, USB), as well as for
GyrFalcon modules (GF8, GF6 and CD-Pro2LF), balanced
and un-balanced connectors for analog line-stage
audio outputs from DAC module, analog output headers
for audio signals from before the line stage
(balanced), Worldclock output, etc….
For
stand-alone operation without any other GyrFalcon
components, the GF Audio Evaluation Board also
provides a simple user interface to select input and
display vital statistics.
Functional
diagram of the GyrFalcon Audio Evaluation Board :
|
 |
Digital
inputs: AES/EBU (XLR), S/PDIF (RCA), TOSLink,
USB |
|
Inputs
from DAISy OEM modules (CD-Pro2LF, GF8, GF6) |
|
Analog
line outputs: stereo balanced (XLR) and
unbalanced (RCA) |
|
Analog
output headers for audio signals from before
the line stage (balanced) |
|
Worldclock
output |
|
Control
via I2C bus from GyrFalcon User Board |
|
Local
user interface for stand-along operations
without external GyrFalcon User Board |
|
Integrated
AES receiver and PLL based clock generator for
operation with BB0 module (not needed for
BB192 and BB176 modules). |
|
Master
and slave clock operation possible with BB0
module |
|
Analog
de-emphasis circuitry |
|
+12V/-12V |
|
