XV-C2E (serv.man4). Service manual part three - Sharp Projector Service Manual (repair manual). Page 5

13~16,

D

IN0

~

Data input

I

Write data input terminal.

21~24

D

IN7

Data is entered at the first leading edge after WCK input
cycle. The setup time and hold time (t

DS

, t

DH

) are determined

at this time.

1~4,

D

OUT0 

~

Data output

O

Read data output terminal.

9~12

D

OUT7

Access time is determined from the leading edge before RCK
input cycle and defined by t

AC

.

19

RSTW

Reset write input

I

Reset input terminal to initialize the write address pointer.

Reset signal is entered at the first leading edge after WCK
input cycle. The setup time and hold time (t

RS

, t

RH

) are de-

termined at this time.

6

RSTR

Reset read input

I

Reset input terminal to initialize read address pointer.

Reset signal is entered at the leading edge after WCK input
cycle. The setup time and hold time (t

RS

, t

RH

) are determined

at this time.

20

WE

Write enable input

I

Write operation control input terminal.

When it is in disable mode (at high level), the internal write
operation is disabled and the write address pointer stops at
the current value, too.

5

RE

Read enable input

I

Read operation control input terminal.

When it is in disable mode (at high level), the internal read
operation is disabled and the read address pointer stops at
the current value, too.
In addition, the output becomes of high impedance.

17

WCK

Write clock input

I

Write clock input terminal.

When WE signal is enabled (at low level), the write opera-
tion is performed in synchronization with the write clock and
the write address pointer is incremented at the same time.

8

RCK

Read clock input

I

Read clock input terminal.

When RE signal is enabled (at low level), the read operation
is performed in synchronization with the read clock and the
read address pointer is incremented at the same time.