DV-760H (serv.man3). Section 1 - 11 - Text - Sharp DVD Service Manual (repair manual). Page 44

18

VDD

Power supply terminal

Input

VDD: +5V

±

0.5V

21

VSS

VSS: 0V

16

VPP

FLP driver power

Input

VPP: VDD–35V
The voltage to be supplied to the SEG 0 to 7, DGT 0 to 7 pull-down
resistor is applied.

19

OSCI

Clock input

Input

Oscillation input terminal

A terminal to which the ceramic

20

OSCO

Clock output

Oscillation output terminal

oscillation terminal is connected.

To OSCI in case of clock input from outside in case of separate excitation

22

NCS

Chip select input

Input

"L": Serial input allowed

"H": Serial input inhibited

23

SCK

Sirial clock input

Input

Serial transfer clock input

24

SDI

Sirial data input

Input

Sirial data input
The command data, address data, indication data, control register
data, and port output data are input.

25

SDO

Sirial data output

Output

Sirial data output
The key scan input data and port input data are output.

26~30

P30~P34

Key scan input

In/Output

There are 5 bits. Bitwise selection of key scan input/general-use
input/general-use output is enabled. The pull-down resistor is pro
vided between this terminal and the VSS terminal.
The general-use output is large current output for LED drive.

31~38

SEG0~SEG7

High voltage resistance output

Output

8-bit high voltage resistance output port. (Segment output)
The output type is Pch open drain. The pull-down resistor is built in
between this terminal and the VPP terminal.

39~42

P10~P13

High voltage resistance output

Output

4-bit high voltage resistance output port.

SEG8~SEG11

Bitwise selection of general-use output/segment output is enabled.
The output type is Pch open drain.

43, 44

P20~23

High voltage resistance output

In/Output

4-bit high voltage resistance output port.

1, 2

DGT12/SEG15

Bitwise selection of general-use input/general-use output/seg ment
output/digit output is enabled. The output type is Pch open drain.

DGT15/SEG12

Large current output for LED drive

3~6

P00~P03

High voltage resistance output

Output

4-bit high voltage resistance output port.

DGT8~DGT11

Bitwise selection of general-use output/digit output is enabled.
The output type is Pch open drain.

7~10

DGT0~DGT7

High voltage resistance output

Output

8-bit high voltage resistance output port. (Digit output)

12~15

The output type is Pch open drain. The pull-down resistor is built
in between this terminal and the VPP terminal.

Terminal Terminal Name

Name

In/Output

Function

~

)

NC S

SC K

SD I

SD O

VP P

VD D

VS S

S C1

S C2

D0

D7D8

(P53)

(P32) (P20)

(P23)

(P13)

(P10)

D11

DS12

DS15

S11

S8 S7

S0

P34

P30

5

8

4

4

4

4

4

4

4

4

4

8

4

Timing generating

circuit

S B ( 8 )

L A T C H ( 8 )

Shift Resistor

MPL

MPL

MPL

LATCH(5)

5 X 1 2

( 8 X 3 2 ) X 2

S E G ( 1 6 )

D G T ( 1 6 )

F L P

K E Y

M A T R I X

Comannding

Decoder