LC-20B5E (serv.man7). Adjusting procedure of each section - Sharp TV Service Manual (repair manual). Page 9

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PCMCIA card

Used at 5V/3.3V

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DM270 (IC5001) CPU, DSP, DMAC, OSD, NTSC encoder: system control, OSD display, video encoding/decoding
Used at 3.3V (1.5V for DSP)

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DA150 (IC5201)

Audio encoding/decoding

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32M FLASH (IC5003)

Storing the program for DA150 and DM270

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64M SDRAM (IC5006)

Used for temporary data storage and for image data compression and expansion.

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Reg (IC5409)

Conversing 4V/6V to 3.3V/5V for PCMCIA

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Reg (IC5004)

Conversing 3.3V to 1.5V for DSP in DM270

"Tips"

1) With this product, showing images recorded with PC or DSC enables you to check the playing system.
2) With PC, showing images recorded with this product enables you to check the recording system.
3) Video is played at the rate in sync with IIS CLOCK signals from audio circuit. For example, if the IIS CLOCK

signals fail to reach the card playing circuit for some reason, the video is played at the lowest rate and is shown
in slow motion.

Major input/output terminals on the card system

Card side

IC (connector)

Pin No. LSI terminal name

Connection diagram

Types of signals

Explanation for signals

I/O

name

signal name

DM270

B3.3V_CARD1A

B3.3V_CARD1A

Power supply

Power supply 3.3V for DM270

I

(IC5001)

103

VIN

VIN

V signal from VPC to DM270

I

102

HIN

HIN

H signal from VPC to DM270

I

100

LLC2 (CLK)

LLC2

Clock signal from VPC to DM270

I

112

YIN0

YIN0

Data signal 0 from VPC to DM270

I

111

YIN1

YIN1

Data signal 1 from VPC to DM270

I

110

YIN2

YIN2

Video input/output

Data signal 2 from VPC to DM270

I

109

YIN3

YIN3

Data signal 3 from VPC to DM270

I

108

YIN4

YIN4

Data signal 4 from VPC to DM270

I

107

YIN5

YIN5

Data signal 5 from VPC to DM270

I

106

YIN6

YIN6

Data signal 6 from VPC to DM270

I

105

YIN7

YIN7

Data signal 7 from VPC to DM270

I

55

RESET

RESET

Data

Reset signal from TV microprocessor to DM270

I

10

CA_DOUT

DOUT

communication

Data signal from TV microprocessor to DM270

I

11

DIN

DIN

Data signal from DM270 to TV microprocessor

I

70

VOUT

VOUT

V signal from DM270 to IP

O

69

HOUT

HOUT

H signal from DM270 to IP

O

68

CKOUT

CKOUT

Clock signal from DM270 to IP

O

81

YOUT0

YOUT0

Data signal 0 from DM270 to IP

O

77

YOUT1

YOUT1

Data signal 1 from DM270 to IP

O

76

YOUT2

YOUT2

Video input/output

Data signal 2 from DM270 to IP

O

75

YOUT3

YOUT3

Data signal 3 from DM270 to IP

O

74

YOUT4

YOUT4

Data signal 4 from DM270 to IP

O

73

YOUT5

YOUT5

Data signal 5 from DM270 to IP

O

72

YOUT6

YOUT6

Data signal 6 from DM270 to IP

O

71

YOUT7

YOUT7

Data signal 7 from DM270 to IP

O

P5003

1

I2S_WS

S_WS

I2S word strobe L: Right audio input / H: Left audio input

I

2

GND

3

I2S_CL

S_CL

Clock for I2S serial data transmission timing

I

4

GND

5

I2SDA_OUT

S_DO

Audio input/output

Audio data input from TV main unit

I

6

GND

7

I2SDA_IN1

S_DI

In card mode: Card Audio / Not in card mode: Shutter sound

O

8

GND

9

I2SDA_IN2

SH_DI

10

GND

Reg

1

IN

B4V/6V1_1A

4V/6V output from DC/DC converter to Reg

O

(IC5409)

2

SW

B4V/6V1_1A

ON/OFF switch

I

3

OUT

V5EN

Power supply

3V power input from DC/DC converter to Reg

I

V3EN

5V power input from DC/DC converter to Reg

I

4

ADJ

For adjustment

5

GND

GND

GND