DV-660H (serv.man2). start to section 13-4 - Sharp DVD Service Manual (repair manual). Page 41

1

VDD

Power supply terminal

Input

VDD: +5V

±

0.5V

4

VSS

VSS: 0V

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.

2

OSCI

Clock input

Input

Oscillation input terminal

A terminal to which the ceramic

3

OSCO

Clock output

Oscillation output terminal

oscillation terminal is connected.

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

5

NCS

Chip select input

Input

"L": Serial input allowed

"H": Serial input inhibited

6

SCK

Sirial clock input

Input

Serial transfer clock input

7

SDI

Sirial data input

Input

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

8

SDO

Sirial data output

Output

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

9~13

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.

14~21

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.

22~25

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.

26~29

P20~23

High voltage resistance output

In/Output

4-bit high voltage resistance output port.

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

30~33

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.

34~41

DGT0~DGT7

High voltage resistance output

Output

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