Ross Synergy 1, Руководство по обслуживанию

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Synergy 1 and Synergy 100 Maintenance Guide (v16-S1) System Architecture • 2–17
CPU Structure
This section describes the CPU structure of the Synergy 1 switcher, in terms of which areas are
controlled by which specific microprocessors.
Effectively, the CPU structure of the Synergy 1
switcher functions as a master/slave duo-processor system, where the master processor controls high
level functionality, and delegates other tasks to slave processors.
In a Synergy 1 switcher, you have two microprocessors in the frame, plus one in the control panel.
Each microprocessor is a 50 MHz floating point DSP (TMS-320-C32, manufactured by Texas
Instruments), and each is identical — running at the same clock rate.
Processor Distribution and Functionality
Processor distribution and functionality is as follows:
• One “ Frame Processo r” on the Frame Processor Board is responsible for performing
high level functions, and issuing commands to the MLE processor. This processor
manages all serial channels to and from the frame, and manages communications with
all other peripheral devices connected to the frame. In addition, it manages
communications with the control panel, and in the case of the
Synergy 100 Control
Panel , communicates to the Control Panel Processor which LEDs to turn on and off
and which text to write in the various displays on the panel.
The Frame Processor also controls the Ultimatte
™
Insider Board, the Dual Aspectizer
®
Board and non-MLE functions, including all Aux Bus functions, and all crosspoint
switching.
• One “ MLE Processor ” on the Frame Processor Board processes high-level
information that pertains to the current state and specific commands issued on the MLE.
This high level information includes which functions are enabled or disabled, and what
configurations have been set up by the user on the control panel.
The MLE Processor
translates that information, and sets the required bits in the hardware to complete the
command request.
Following are several examples:
~ If you press
WIPE
in the MLE and select the circle wipe in the Pattern Control
Group , that information goes to the Frame Processor — which in turn tells the
MLE Processor that a circle wipe has been requested. The MLE Processor then
draws the proper tables required to make the image.
~ If you pull the Fader from Program to Preset, the Frame Processor receives that
information and analyses how it affects the high level structures within the switcher
— e.g., which buses are moving, what type of effect has been requested (Dissolve,
Wipe, DVE, etc.).
The Frame Processor then passes the current state of a particular
field to the MLE Processor, which then writes the effect’s specific values to the
video processing circuitry.
~ If you press the
AUTO TRANS
button, that command goes from the control panel
to the Frame Processor, which in turn keeps track of which state the transition is in.
Commands are then issued to the MLE Processor to perform the transition at (for
example) 4% in one field, 8% in the next field — until complete. The MLE
Processor in turn does not process the video itself, but rather issues commands to
the hardware on the Frame Processor Board to set the mixer to the requested ratio
and manipulate the pixels accordingly.