LS7166_06 LSI [LSI Computer Systems], LS7166_06 Datasheet - Page 8

• Manufacturer Part Number: LS7166_06
• Description: 24-BIT QUADRATURE COUNTER
• Manufacturer: LSI [LSI Computer Systems]

7166-110103-8
DATA BUS
DATA BUS
CNTR LOAD
(LCTR or MCR BASED)
(INTERNAL)
(INTERNAL)
(INTERNAL)
(INTERNAL)
Q2-Q23
UP CLK OR
DN CLK
CNTR LD
C/D
DN CLK
C/D
CS
CS
Q1
Q0
WR
RD
LCTR
BW
T
CY or BW
CRS
T
SRS
T
RD
VALID OUTPUT
CNTR=3
NOTE: EXAMPLE OF DIVIDE BY 4 IN DOWN COUNT MODE
FIGURE 4.
T
T
FIGURE 5. DIVIDE BY N MODE
SRH
RT
CNTR DISABLED
FIGURE 6 . CYCLE ONCE MODE
T
=2
CRH
T
RR
T
SWS
T
VALID DATA
CWS
T
=1
DS
T
READ/WRITE CYCLES
WR
=0
T
CNTR ENABLED
SWH
T
=3
T
WW
DH
T
CWH
=2
=1
CNTR DISABLED
=0
=3