M66305AP 데이터 시트보기 (PDF) - MITSUBISHI ELECTRIC

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M66305AP

TOGGLE LINE BUFFER

MITSUBISHI ELECTRIC  

MITSUBISHI 〈DIGITAL ASSP〉

M66305AP/AFP

TOGGLE LINE BUFFER

PIN DESCRIPTION

Pin

Name

RESET

Reset input

CS

Chip select input

ICE

Input clock enable

SICLK

SIDATA

OCE

Input clock

Input data

Output clock enable

SOCLK

SODATA

T

Output clock

Output data

Toggle signal input

BF

Buffer full output

INT

Write request output

CNTRST1

CNTRST2

CAS1

Write counter reset input

Read counter reset input

Cascade input 1

CAS2

Cascade input 2

NC

No Connection

Functions

Initializes integrated circuit. (SODATA =“L”, BF =“H”, INT = “H”)

“L”: Chip select

“H”: Non-select (Inputs other than RESET have no effects on circuit inside.)

“L”: Input clock (SICLK) enable

“H”: Input clock (SICLK) disable

With rise of SICLK, SIDATA is written on line buffer memory.

“L”: Output clock (SOCLK) enable

“H”: Output clock (SOCLK) disable

With fall of SOCLK, SODATA is output. Because buffer is provided between memory and

output, each piece of data is propagated at a constant rate, irrespective of internal

memory read access time.

The line buffer memory in write mode is switched to read mode, and the other in read

mode is switched to write mode.

Output when SICLK rises for input of 5,120th bit, indicating no more writing is possible.

When BF is “L”, circuit inside is automatically set to “input disable”. BF is canceled with

rise of toggle signal (T) status.

Output when SOCLK rises after output of final bit of written data. When INT is “L”, circuit

inside is automatically set to “output disable”. INT is canceled with rise of toggle signal

(T) status.

Used to rewrite data during write operation when CS is “L”.

Used to undo data output halfway or to retry output when CS is “L”.

Output when SOCLK falls after output of final bit of written data. When cascade

connection is not used, be sure to connect this pin to VCC or GND.

Up to 2 cascade connections are possible. Connect the CA2 pin of master IC to VCC,

and the CA2 pin of slave IC to GND. Refer to APPLICATION EXAMPLE for details.

Non-connected pin provided only for M66305AFP. This pin can be used for wiring.

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