Circuit Description; Microcontroller (5200-33) - evertz 5010 SIE Instruction Manual

4.3.

CIRCUIT DESCRIPTION

TECHNICAL DESCRIPTION
JP1 Fill
JP2 Key
JP3 Video Out Sel
JP4 VITC PROM CEl
JP5 LCA Config Select
JP6 LCA Config Select
JP7 LCA Config Select
The model 5010-SIE is a microcontroller based device functionally divided
into the following hardware subsystems:
1 Microcontroller & I/O
2 Display and Pushbuttons
3 VITC Generator
7 Character generator video keyer
8 Character generator logic
The microcontroller, character generator logic and video processing circuits
are all contained on the main circuit card (5200). The display and keypad
circuitry is contained on a separate circuit board (5220) which plugs into
the main board via a twenty conductor ribbon cable. The VITC generator
circuitry is contained on a separate circuit board (5235) which plugs into
the main board via a forty pin header. The relevant schematic drawings
are shown in brackets for each section of the circuit. The heart of the
model 5010 circuitry are two programmable logic array (LCA) devices.
One LCA (U25) contains the support circuitry for addressing various
devices on the board.
generator raster scanning logic. The VITC generator submodule LCA (U8)
contains the VITC generator logic.

4.3.1. Microcontroller (5200-33)

At the heart of the model 5010-SIE is an 8032 microcontroller, (MCU) U17.
Its three 8 bit bi-directional ports and 8 bit bus provide peripheral
interfacing to the rest of the circuits. Program memory is contained on
EPROM U19. Scratch pad and data RAM are provided internally by the
MCU. An onboard oscillator, also part of the MCU, is crystal controlled. Its
Model 5010-SIE Source ID Encoder Manual
A Install for Analog Video Out
D Install for Digital Video Out
A Install for Analog Video Out
D Install for Digital Video Out
O Selects Terminated Video In and assigns Out
A and B as outputs
I Selects high impedance video in loop and Out
B as an output.
Pin 1,2 Board link installed connects VITC EPROM
CE to + 5 volts after LCA loads.
Pin 2,3 Board link installed connects VITC EPROM
CE to ground.
A Default for use with VITC generator
C Default for use with VITC generator
F Default for use with VITC generator
The other LCA (U36) contains the character
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