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transistor, it controls each portion of energy transferred to the second side such that the output voltage
remains nearly independent of load variations.
6. MICROCONTROLLER
The microprocessor is embedded inside PW181 chip which also handles scaling, frame rate conversion
and OSD generation. The on-chip 16-bit microprocessor is a Turbo x86-compatible processor core with
on-chip peripherals (timers, interrupt controller, 2-wire serial master/slave interface, UART, I/O ports,
and more). Special peripherals such as Infrared (IR) pulse decoders and a digital pulse width modulator
(PWM) are also included. There are two independent 2-wire serial master/slave interface modules that
can be multiplexed to control up to five 2-wire serial ports. The slave 2-wire interface is designed for
HDCP use only (and requires the use of HDCP Image Processors). On-chip RAM of up to 64 Kbytes is
available. A complete microprocessor system can be implemented simply by adding external ROM. The
on-chip processor can be disabled to allow external processor control of all internal functions.
7. SERIAL ACCESS CMOS 4K x 8 (32K bit) EEPROM 24C32A
The Microchip Technology Inc. 24C32A is a 4K x 8 (32K bit) Serial Electrically Erasable PROM. It has
been developed for advanced, low power applications such as personal communications or data
acquisition. The 24C32A also has a page-write capability of up to 32 bytes of data. The 24C32A is
capable of both random and sequential reads up to the 32K boundary. Functional address lines allow
up to eight 24C32A devices on the same bus, for up to 256K bits address space. Advanced CMOS
technology and broad voltage range make this device ideal for low-power/low-voltage, non-volatile code
and data applications.
8. CLASS AB STEREO HEADPHONE DRIVER TDA1308
The TDA1308 is an integrated class AB stereo headphone driver contained in a DIP8 plastic package.
The device is fabricated in a 1 mm CMOS process and has been primarily developed for portable digital
audio applications.
9. IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM
TEA6415C
24C32
LM317T
ST24LC21
TLC7733
74LVC257A
74LVC14A
TEA6420D
LM1086
LM1117
DS90C385
TL431
MSP3411G
TDA7265
TDA1308
PI5V330
AD9883A
SAA7118E
TPS72501
TSOP1836
PCF8591
PW1231
PW181
SIL151B
SDRAM 4M x 16 (MT48LC4M16A2TG-75)
FLASH
2
Plasma TV Service Manual
11/01/2005
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