28LW-92H (serv.man2) - Sharp TV Service Manual (repair manual). Page 9

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CHASSIS
• Up to 16 Colours per DRCS Character 
• One out of Eight Colours for Foreground and Background Colours for 1-bit DRCS and ROM 
Characters 
• Shadowing 
• Contrast Reduction 
• Pixel by Pixel Shiftable Cursor With up to 4 Different Colours 
• Support of Progressive Scan and 100 Hz. 
• 3 X 4Bits RGB-DACs On-Chip 
• Free Programmable Pixel Clock from 10 MHz to 32MHz 
• Pixel Clock Independent from CPU Clock 
• Multinorm H/V-Display Synchronization in Master or Slave Mode 
 
10.6.Acquisition Features 
• Multi-standard Digital Data Slicer 
• Parallel Multi-norm Slicing (TTX, VPS, WSS, CC, G+) 
• Four Different Framing Codes Available 
• Data Caption only limited by available Memory 
• Programmable VBI-buffer 
• Full Channel Data Slicing Supported 
• Fully Digital Signal Processing 
• Noise Measurement and Controlled Noise Compensation 
• Attenuation Measurement and Compensation 
• Group Delay Measurement and Compensation 
• Exact Decoding of Echo Disturbed Signals 
 
10.7.Ports 
• One 8-bit I/O-port with open drain output and optional I
2
C Bus emulation support (Port0) 
• Two 8-bit multifunction I/O-ports (Port1, Port3) 
• One 4-bit port working as digital or analogue inputs for the ADC (Port2) 
• One 2-bit I/O port with secondary function (P4.2, 4.3, 4.7) 
• One 4-bit I/O-port with secondary function (P4.0, 4.1, 4.4) (Not available in P-SDIP 52) 
 
11.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. 
 
12.SAW FILTERS  
K3953M: 
Standard 
B/G, D/K, I, L/L’
 
Features 
TV IF filter with Nyquist slopes at 33,90 MHz and 38,90 MHz 
Constant group delay 
Suitable for CENELEC EN 55020 
Terminals 
Tinned CuFe alloy 
Pin configuration 
1 Input 
2 Input - ground 
3 Chip carrier - ground 
4 Output 
5 Output 
 
K3958M: 
Standard 
B/G, D/K, I, L/L’ 
Features 
TV IF filter with Nyquist slopes at 33.90 MHz and 38.90 MHz 
Constant group delay 
Terminal and Pin configuration are the same with 
K3953M 
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