VESTEL 17MB12, Руководство по обслуживанию

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Programmable IF frequency (38.9 MHz, 45.75 MHz, 32.9 MHz, 58.75 MHz,
36.125 MHz etc.)
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Digital IF processing for the following standards: B/G, D/K, I, L/L’, and M/N
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Standard specific digital post filtering
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Standard specific digital video/audio splitting
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Standard specific digital picture carrier recovery:
-Alignment-free
-Quartz-stable and accurate
-Stable frequency lock at 100% modulation and overmodulation up to
150%
-Quartz-accurate AFC information
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Programmable standard specific digital group delay equalization
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Automatically frequency-adjusted Nyquist slope, therefore optimum picture and
sound performance over complete lock in frequency range
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Standard-specific digital AGC and delayed tuner AGC with programmable tuner
take-over point
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Fast AGC due to linear structure
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Adaptive back porch control, therefore fast positive modulation AGC
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No sound traps needed at video output
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SIF output with standard-dependent pre-filtering and amplitude-controlled output
level
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Optimal sound SNR due to carrier recovery without quadrature distortions
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FM radio capability without external components and with standard TV tuner
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Prepared for digital TV (DVB-C, DVB-T, ATSC)
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I2C bus interface
7 SERIAL 64K I2C EEPROM M24C64WBN6
7.1 General Description
M24C64WBN6 is a 64 Kbit Electrically Erasable PROM. These I2C-compatible
electrically erasable programmable memory (EEPROM) devices are organized as
8192x8 bits. It supports 400kHz Protocol I2C uses a two-wire serial interface,
comprising a bi-directional data line and a clock line.
The M24C64WBN6 is available in the standard 8-pin (Vcc, WC, SDA (i2c data), SCL
(i2c clock), Vss,E0,E1,E2). WC pin is critcal pin. If WP is high, writing is not possible to
EEPROM. If WP is low, writing is possible to EEPROM.
7.2 Features
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Two-Wire I2C Serial Interface Supports 400kHz Protocol
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Single Supply Voltage:
– 4.5 to 5.5V for M24Cxx
– 2.5 to 5.5V for M24Cxx-W
– 1.8 to 5.5V for M24Cxx-R
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Write Control Input
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BYTE and PAGE WRITE (up to 32 Bytes)