DV-700 (serv.man3). Section 1-11 - Text - Sharp DVD Service Manual (repair manual). Page 32

Pin1~15 ........ There is a possibility of simultaneous change.

Operating frequency: Approx. 10 MHz

Pin18~47 ..... There is a possibility of simultaneous change.(Static signal)

Operating frequency: Approx. 1 MHz

Pin50~57 ..... There is almost no possibility of simultaneous change.

Operating frequency: Approx. 1 MHz

Pin63 ............ Not used

Data Buffer

Latch D

Data Buffer

Latch C

Data Buffer

Latch B

Data Buffer

Latch A

Data Buffer

R/W CTL

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

VDD

EXPD(3)

EXPD(4)

EXPD(5)

BUFDO

BUFDI

SBUFBO

SBUFBI

SBUFAO

SBUFAI

MRST

MODE

BUFCO

TEST

BUFCI

VSS

VDD

SOUT(3)

SOUT(4)

SOUT(5)

MRST

MODE

SEL

TEST

CK

VSS

VSS

EXPD(2)

EXPD(1)

EXPD(0)

EXPC(5)

EXPC(4)

EXPC(3)

VSS

EXPC(2)

EXPC(1)

EXPC(0)

EXPBU(3)

EXPBU(2)

EXPBU(1)

EXPBU(0)

VDD

VSS

SOUT(2)

SOUT(1)

SOUT(0)

S2(5)

S2(4)

S2(3)

VSS

S2(2)

S2(1)

S2(0)

Q2(7)

Q2(6)

Q2(5)

Q2(4)

VDD

VSS

EXPBL(3)

EXPBL(2)

EXPBL(1)

EXPBL(0)

EXPAU(3)

EXPAU(2)

VDD

VSS

EXPAU(1)

EXPAU(0)

EXPAL(3)

EXPAL(2)

EXPAL(1)

EXPAL(0)

VDD

VSS

Q2(3)

Q2(2)

Q2(1)

Q2(0)

Q1(7)

Q1(6)

VDD

VSS

Q1(5)

Q1(4)

Q1(3)

Q1(2)

Q1(1)

Q1(0)

VDD

VDD

HADR0

HADR1

HADR2

HCS

HWR

HRD

HDAT0

HDAT1

HDAT2

HDAT3

HDAT4

HDAT5

HDAT6

HDAT7

VSS

VDD

D(0)

D(1)

D(2)

D(3)

D(4)

D(5)

D(6)

D(7)

S1(0)

S1(1)

S1(2)

S1(3)

S1(4)

S1(5)

VSS

In/Output Pin

Exclusive-use pin

In/Output Pin

In/Output Pin

In/Output Pin

In/Output Pin

Output: 

Open drain

Input Pin

In/Output Pin

Output: Open drain

Pin No.

Pin name

Type

Direction

Function

22

HA[3:0]

I

I

Address bus input for microcomputer connection.

24-26

Used for register access and so on
HTYPE = L
It works as HR/W#(read/write) input terminal for connection to Motorola

27

HWR#

I

I

type microcomputer.

(HR/W#)

HTYPE = H
It works as HWR# (write) input terminal for connection to general purpose
microcomputer.

29

HCS#

I

I

Chip select input for connection to microcomputer
HTYPE = L
It works as HDS#(data strobe) input terminal for connection to Motorola

30

HRD#

I

I

type microcomputer.

(HDS#)

HTYPE = H
It works as HRD# (read) input terminal for connection to general purpose
microcomputer.
Bit stream input ready output terminal If the bit stream is input from
microcomputer, the terminal is bored.
For 3-state output, connect the pull-up resistor.
HRDY = L

31

HRDY

3-S

O

Bit stream can not be input.
HRDY = H
The number of bytes which are set by CodBurstLen parameter can be
transferred from the microcomputer. During the time from transfer start of
the number of set bytes to transfer end, the terminal varies in 3 states.

Microcomputer interface