Training course: D44
13
SEES Engineering Department
2. Block Diagrams (continued)
Main ICs
IC203: I2C BUS SELECTOR
Part Number: SN74LV4053APWR SHARP Code: VHILV4053AT-1Y
The SN74LV4053APWR is a high-speed CMOS analog multiplexer/demultiplexer backed by silicon gate CMOS technology. The multiplexer func-
tion includes the selection and mixing of analog and digital signals. The chip includes two independent 3 channels selectors. A digital signal through
the control terminal turns on the switch of a corresponding channel. This IC is selecting if the Tuner is controlled from VCT-Pro (ATV mode) or from
OFDM decoder (DTV mode).
IC1201: NVM OF PC INPUT (EDID)
Part Number: BRC21F SHARP Code:VHIBR24C21F-1Y
This IC is a 2-wire (I2C bus type) serial EEPROM this is electrically programmable. This EEPROM chip stores the data structure used to carry
confi guration information for optimal use of a display (EDID data).
IC1501: RS-232 TRANSCEPTOR
Part Number: ISL83220 SHARP Code: VHIISL83220-1Y
This ISL83220 is a 3.0V to 5.5V powered RS-232 transceiver (emitter/receiver), +/-15kV ESD protected, with a maximum data rate of 250 kbps.
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