Hitachi C20 Lc880snt Service Manual

- 38 -INFORMATION OF ICS
IC GM5221 PQFP-208 (Miscellaneous)
Pin No.
   Pin Name Description
    1 ROM-DATA3 External ROM DATA3
    2 ROM-DATA2 External ROM DATA2
    3 ROM-DATA1 External ROM DATA1
    4 ROM-DATA0 External ROM DATA0
    5 ROM-OEn External ROM Output Enable
    6 ROM-WEn External ROM Write Enable
    7 ROM-CSN External ROM Crip Select Enable
8,42,51, CRVSS Ground for cord power
74,76,87,
94,97,
140,180
9,41,75, CVDD_18 Cord Digital power. Connect to digital 1.8V supply.
86,96,
139,179...

- 39 -INFORMATION OF ICS
IC SAA5264PS/M3/0104 SDIP52
Pin No.    Pin Name Description
1 PWM Output for 14-bit high precision Pulse Width Modulator(PWM)
2 PWM0 Output for 6-bit PWMs 0 to 6
3 PWM1
4 PWM2
5 PWM3
6 PWM4
7 PWM5
8 PWM6
9 ADC0 Inputs for the software Analog-to-Digital-Converter(ADC) facility
   10 ADC1
   11 ADC2
   12 ADC3
   13 VSCC Core ground
   14 SCL(NVRAM) I2
C-bus Serial Clock input to Non-Volatile RAM
   15 SDA(NVRAM) I2
C-bus Serial Data input/output (Non-Volatile RAM)
   16...

- 40 -IC SAA5264PS/M3/0104 SDIP52
Pin No.
  Pin Name Description
    37 VSYNC Vertical sync pulse input; Schmitt triggered for a TTL version; the
polarity of this pulse is programmable by register bit TXT1. V POLARITY
    38 VSSP Periphery ground
    39 VDDC Core supply voltage (+3.3V)
    40 OSCGND Crystal oscillator ground
    41 XTALIN 12 MHz crystal oscillator input
    42 STALOUT 12 MHz crystal oscillator output
    43 RESET Reset input; if this pin is HIGH for at least 2 machine cycles (24...

- 41 -INFORMATION OF ICS
IC  TVP5146PFP S-PQFP-G80 (Analog Video)
Pin No.   Pin Name Description
    80 VI_1_A
    1 VI_1_B VI_1_x: Analog video input for CVBS/Pb/B/C
    2 VI_1_C VI_2_x: Analog video input for CVBS/Y/G
    7 VI_2_A VI_3_x: Analog video input for CVBS/Pr/R/C
    8 VI_2_B VI_4_x: Analog video input for CVBS/Y
    9 VI_2_C Up to 10 composite, 4 S-video, and 2 composite or 3 component
   16 VI_3_A video input(or a combination thereof) can be supported.
   17 VI_3_B The inputs must be...

- 42 -IC  TVP5146PFP S-PQFP-G80 (
Power Supply)
Pin No.    Pin Name Description
    26 AGND Analog ground. Connect to analog ground.
    13 A18GND_REF Analog 1.8-V return
    12 A18VDD_REF Analog power for reference 1.8V
    79 CH1_A18GND
    10 CH2_A18GND Analog 1.8-V return
    15 CH3_A18GND
    24 CH4_A18GND
    78 CH1_A18GND
    11 CH2_A18GND Analog power. Connect to 1.8 V.
    14 CH3_A18GND
    25 CH4_A18GND
     3 CH1_A33GND
     6 CH2_A33GND Analog 3.3-V return
    19 CH3_A33GND
    22 CH4_A33GND...

- 43 -REPLACEMENT PARTS LIST
The following service parts list are available for purchase.
Serviceman may quote the components shown in this page for servicing purposes.
PRODUCT SAFETY NOTE :  Critical parts that have special safety characteristics are identified by a   in
the replacement parts list or the schematic diagrams. Use of any substitute replacement part that does not have
the same safety characteristics as the recommended replacement part in the parts list might create shock, fire
and/or other...

- 44 -PARTS LIST (FOR REFERENCE ONLY)
The components shown in the remaining pages served as a reference only. It is not meant for ordering
of components for servicing purposes. Do not quote any components from these lists.  Item
       Part No. Description        Circuit No.
    1 G1102-001001 COIL FIX C 120K T04 0603 L47
    2 G1102-001002 COIL FIX C 2R7K T04 0603 L34 L35 L36
    3 G1102-002001 COIL FIX C 3R3K  T08  1206 L48 L49 L50
    4 G1107-001001 COIL FIX  33uH  16.5X9   24.5T L15
    5...

C15-LC880SNT & C20-LC880SNT
SC No. 0013E    Copyright   Digital Media Systems Group, (2005) All rights reserved