Controller; Teletext Features - Daewoo CHASSIS : SC-150 Model : DSC-3220E Service Manual

Service manual SC-150
Horizontal scaling ( 0.25 to 4 )
Panoramavision
Black-level expander
Dynamic peaking
Soft limiter (gamma cor r ection)
Colour transient improvement
Programmable RGB matrix
Analogu e RGB/Fastblank input
Half-contrast switch
Picture frame generator
Scan velocity modulation output
High-performance H/V deflection
Angle and bow correction
Separate ADC for tube measurements
EHT compensation

4-1-3- -Controller

8-bit, 10-Mhz CPU (65C02)
96 kB pro gram ROM on chip
1 kB program RAM on chip
memory banking
16-input, 16-level interrupt controller
patch module for 10 ROM locations
two 16-bit reloadable timers
capture compare module
watchdog timer
14-bit PWM for voltage synthesis
Four 8-bit PWMs
10-bit ADC with 15:1 input MUX
I2C bus master interface
24 programmable I/O ports
80C51 -controller core standard instruction set and timing
1 s machine cycle
32-128Kx8-bit late pro grammed ROM
3-12Kx8-bit Auxiliary RAM (shared with Display and Acquisition)
Interrupt controller for individual enable/disable with two level priority
Two 16-bit Timer/Counter registers
WatchDog timer
Auxiliary RAM page pointer
16-bit Data pointer
IDLE and Power Down (PD) mode
14 bits PWM for Voltage Synthesis Tuning
8-bit A/D converter
4 pins which can be programmed as general I/O pin, ADC input or PWM (6-bit) output

4-1-4- Teletext Features

Four programmable video inputs
Adapt ive data slicer
Signal quality detection
WST, PDC, VPS, and WSS acquisition
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