Cobalt Digital COMPASS 9301 AES Audio Delay - Manual (Page 9)

9301-OM (V4.2) 9301 PRODUCT MANUAL 1-5
Introduction
9301 Functional Description
9301 Functional Description
Figure 1-1 shows a functional block diagram of the 9301. The 9301 AES
audio delay provides independent delay settings (from 0.20 msec to 21
seconds) for up to eight AES channel pairs. All received AES signals are
sample rate converted to match a common output timing. The output timing
can be locked to the AES input timing, a black burst or tri-level video
reference signal, or the card’s internal clock.
In addition to the delay function, the 9301 also provides audio routing that
acts as a full audio cross point. Each of the 16 AES output channels can
receive signal from any one of the 16 AES input channels or four internal tone
generators. Unused output channels can be mapped to a “Silence” source.
Each output also provides gain adjustment and selectable polarity inversion.
Figure 1-1 9301 Functional Block Diagram
AES Decode
and SRC
Audio
Routing/
Gain
Control
AES
Encode
AES IN (5-8)
AES OUT
(5-8)
(1-4)
AES I/O (1-4)
[AES IN (1-4)]
[AES OUT (1-4)]
S11–S14
Sync Proc/
Selection
CLK Gen
PLL
Ext. Frame
Ref IN
(Black Burst
or Tri-Level)
Audio
Delay
Buffer
Note: Signal connections shown depicts
full 9301 input/output capability.
Practical input/output signal
availability is determined by Rear
I/O Module used. Refer to 9301
Rear I/O Modules (p. 1-15) for
more information.