LS7166(2002) データシートの表示（PDF） - LSI Corporation

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LS7166
(Rev.:2002)

24-BIT QUADRATURE COUNTER

LSI Corporation  

CS, C/D

TCRS

RD

TRD

DATA BUS

CS,

C/D

WR

DATA BUS

TCRH

VALID OUTPUT

TRT

TCWS

TWW

TCWH

TSWS

TDS

VALID DATA

TSWH

TDH

FIGURE 4. READ/WRITE CYCLES

LCTR

DN CLK

Q0

(INTERNAL)

Q1

(INTERNAL)

Q2-Q23

(INTERNAL)

CNTR LD

(INTERNAL)

BW

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

7166-030494-8

CNTR DISABLED

CNTR ENABLED

CNTR DISABLED

FIGURE 6 . CYCLE ONCE MODE

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