LS7166 View Datasheet(PDF) - LSI Corporation

Part Name

Description

Manufacturer

LS7166

24-BIT QUADRATURE COUNTER

LSI Corporation  

TSRS

CS

C/D

TCRS

RD

TRD

DATA BUS

CS

C/D

WR

DATA BUS

LCTR

DN CLK

Q0

(INTERNAL)

Q1

(INTERNAL)

Q2-Q23

(INTERNAL)

CNTR LD

(INTERNAL)

BW

TSRH

VALID OUTPUT

TCRH

TRR

TRT

TSWS

TSWH

TCWS

TWR

TDS

VALID DATA

TCWH

TWW

TDH

FIGURE 4. READ/WRITE CYCLES

CNTR=3

=2

=1 =0

=3 =2

=1 =0

=3

NOTE: EXAMPLE OF DIVIDE BY 4 IN DOWN COUNT MODE

FIGURE 5. DIVIDE BY N MODE

CNTR LOAD

(LCTR or MCR BASED)

UP CLK OR

DN CLK

CY or BW

7166-110103-8

CNTR DISABLED

CNTR ENABLED

CNTR DISABLED

FIGURE 6 . CYCLE ONCE MODE

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