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Word Clock

Word Clock
Word clock in the RIVAGE PM10 system
On a TWINLANe network, only one DSP engine is the master for one network. If two DSP engines
exist on one network, one is the master and the other is the slave.
The master clock on a TWINLANe network can be one of the following two choices: the DSP
engine's internal clock (44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz) or the external clock that is input to the
WORD CLOCK IN connector on the rear panel of the master DSP engine.
Since the slave DSP engine uses the word clock that is being sent over the TWINLANe network, HY
SLOT 1 is selected. If the clock is interrupted for any reason, the slave DSP engine can become a
substitute master. Since I/O racks always use the word clock that is being sent over the TWINLANe
network, there is no need to specify their word clock source.
If INT (INTERNAL) or
WORD CLOCK IN is selected
The DSP engine will be the clock master for
the TWINLANe network
DSP engine
INT
WORD CLOCK IN
(INTERNAL)
Internal
DSP
HY card
HY card
CLOCK IN
CLOCK OUT
(clock master
HY1
of the network)
Clock supplied to
TWINLANe
TWINLANe network
If HY SLOT 1 is selected
The DSP engine will be the clock slave of the
TWINLANe network
DSP engine
INT
WORD CLOCK IN
(INTERNAL)
Internal
DSP
HY card
HY card
CLOCK IN
CLOCK OUT
(slave to the
HY1
network clock)
Clock supplied from
TWINLANe
TWINLANe network
About the sampling rate converter (SRC)
SRC is built into all input and output channels (one SRC for every two channels) of the AES/EBU
jacks on the rear panel of the control surface and of the RY16-AE. This allows digital signals that are
not synchronized to the RIVAGE PM10 system to be input and output.
SRC block diagram
INPUT
OUTPUT
The input SRC converts the signal to the system clock of the RIVAGE PM10 system.
The output SRC converts the signal to the specified internal clock source or to the same clock as the
input of the same channel.
* Only the corresponding input channels can be selected (if OUT1/2, then IN1/2). For example, IN7/8
cannot be used for OUT1/2.
15
CONTENTS
AUDIO:
CLOCK:
DSP ENGINE
INPUT
SRC
INPUT*
INTERNAL
Clock extraction
INT 44.1k
CLOCK
INT 48k
INT 88.2k
OUTPUT
OUT
INT 96k
SRC
RIVAGE PM10 Operation Manual
FAQ

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