Sharp LC-20B6US Operation, Service Manual, Page: 40 / 104

LC-20B6U-S
40
2-3. Functions Of Pins
NUMBER PIN TYPE
BLOCK
OF PINS
PIN NAME
I/O TYPE
FUNCTION
F/E X’ tal 4 XO VDD VDD CRYSTAL-OSCILLATOR CIRCUIT BLOCK POWER SUPPLY PIN
XO V in I D CRYSTAL-OSCILLATOR CIRCUIT INPUT PIN
XO V out O D CRYSTAL-OSCILLATOR CIRCUIT OUTPUT PIN
XO GND GND CRYSTAL-OSCILLATOR CIRCUIT BLOCK GND
10bit A/D 8 Y_BIASAD A BIAS VOLTAGE PIN FOR 10-bit A/D
YVREFT A 10-bit A/D REFERENCE TOP VOLTAGE PIN
CVBS1in I A CVBS-1/Y-1 ANALOG VIDEO SIGNAL INPUT PIN
YVREFM A 10-bit A/D REFERENCE MIDDLE VOLTAGE PIN
YAD GND GND 10-bit A/D REFERENCE TOP VOLTAGE PIN
CVBS2 in I A CVBS-2/Y-2 ANALOG VIDEO SIGNAL INPUT PIN
YAD VDD VDD 10-bit A/D BLOCK POWER SUPPLY PIN
YVREFB A 10-bit A/D REFERENCE BOTTOM VOLTAGE PIN
3ch. 21 C_BIASAD A BIAS VOLTAGE PIN FOR 8-bit A/D (1)
8bit A/D CVREFT A 8-bit A/D (1) REFERENCE TOP VOLTAGE PIN
C in I A C INPUT
CAD VDD VDD 8-bit A/D (1) CORE POWER SUPPLY PIN
Green in I A G INPUT
CVREFB A 8-bit A/D (1) REFERENCE BOTTOM VOLTAGE PIN
CAD GND GND 8-bit A/D (1) CORE GND
C2_BIASAD A BIAS VOLTAGE PIN FOR 8-bit A/D (2)
C2VREFT A 8-bit A/D (2) REFERENCE TOP VOLTAGE PIN
Cb in I A Cb INPUT
C2AD VDD VDD 8-bit A/D (2) CORE POWER SUPPLY PIN
Blue in I A B INPUT
C2VREFB A 8-bit A/D (2) REFERENCE BOTTOM VOLTAGE PIN
C2AD GND GND 8-bit A/D (2) CORE GND
C3_BIASAD A BIAS VOLTAGE PIN FOR 8-bit A/D (3)
C3VREFT A 8-bit A/D (3) REFERENCE TOP VOLTAGE PIN
Cr in I A Cr INPUT
C3AD VDD VDD 8-bit A/D (3) CORE POWER SUPPLY PIN
Red in I A R INPUT
C3VREFB A 8-bit A/D (3) REFERENCE BOTTOM VOLTAGE PIN
C3AD GND GND 8-bit A/D (3) CORE GND
10bit D/A 8 DA VDD 1 VDD 10-bit D/A BLOCK POWER SUPPLY PIN
DA out 1 O A Y, Cb & Cr OUTPUT
DA GND 1 GND 10-bit D/A BLOCK GND
DABIAS 11 A BIAS VOLTAGE PIN FOR 10-bit D/A
DABIAS 1 2 A BIAS VOLTAGE PIN FOR 10-bit D/A
DAVREF 1 A 10-bit D/A REFERENCE VOLTAGE PIN
DA DVDD 1 VDD 10-bit D/A BLOCK DIGITAL POWER SUPPLY PIN
DA DVSS 1 GND 0-bit D/A BLOCK DIGITAL GND PIN
8bit D/A 7 DA VDD2 VDD 8-bit D/A BLOCK POWER SUPPLY PIN
DA out2 O A 6.75MHz Æ 27MHz
DA GND2 GND 8-bit D/A BLOCK GND
DABIAS21 A BIAS VOLTAGE PIN FOR 8-bit D/A
DAVREF2 A 8-bit D/A REFERENCE VOLTAGE PIN
DA DVDD2 VDD 8-bit D/A BLOCK DIGITAL POWER SUPPLY PIN
DA DVSS2 GND 8-bit D/A BLOCK DIGITAL GND PIN
PLL(F/E) 4 4TPLL in I A 6.75MHz INPUT
AVDDPLL VDD POWER SUPPLY FOR PLL (F/E)