Changhong Electric 21BM91, Руководство по обслуживанию, Страница: 23 / 58

SERVICE MANUAL
2). Features
MCU
* High speed 8-bit CPU (TLCS-870/X series)
* Instruction execution time: 0.5
μ
s(at 8 MHz)
* MPA8801/8807CMBNG)
32-Kbytes ROM, 2-Kbytes RAM
(TMPA8801/8807CPBNG)
48-Kbytes ROM, 2-Kbytes RAM
(TMPA8801/8807CRBNG)
56-Kbytes ROM, 2-Kbytes RAM
(TMPA8801/8807CSBNG)
64-Kbytes ROM, 2-Kbytes RAM
* ROM correction
* 12 I/O ports
* 14-bit PWM output 1 ch for a voltage
synthesizer
* 7-bit PWM output 1 chan
* 8-bit A/D converter 3 ch for a touch-key input
with key ON wake-up CIRCUIT
* Remote control signal preprocessor
* Two 16-bit internal timer/counter 2 ch
* Two 8-bit internal timer/counter 2 ch
* Time base timer, watchdog timer
* 16 interrupt sources: external 5, internal 11
* IIC bus interface (multi-master)
* STOP and IDLE power saving modes
TV Processor
IF
* Integrated PIF VCO aligned automatically
* Negative demodulation PIF
* Multi-frequency SIF demodulator without
external Tank-coil
Video
* Integrated chroma traps
* Black stretch
* Y-gamma
Chroma
* Integrated chroma BPFs
PAL/NTSC/SECAM demodulation
CCD Decoder
* Digital data slicer for NTSC
OSD
* Clock generation for OSD display
* Font ROM characters: 384 characters
* Characters display: 32 columns
×
12 lines
* Composition: 16
×
18 dots
* Size of character: 3 (line by line)
* Color of character: 8 (character by character)
* Display position: H 256/V 512 steps
* BOX function
* Fringing, smoothing, Italic, underline function
* Conform to CCD REGULATION
* Jitter elimination
RGB/Base-Band
* Integrated 1 H base-band delay line
* Base-band TINT control
* Internal OSD interface
* Half-tone and transparent for OSD
* External YCbCr interface for DVD
* RGB cut-off/drive controls by bus
* ABCL (ABL and ACL combined)
Sync.
* Integrated fH
×
640 VCO
* DC coupled vert. ramp output (single)
EW correction with EHT input
(For
TMPA8807 Only)
AV Switch (For TMPA8801 Only)
* 1 for video and 1 for audio (monaural)
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