ICS87972I Datasheet, PDF (3/17 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-12 LVCMOS CLOCK MULTIPLIER/ZERO DELAY BUFFER

ICS87972I
LOW SKEW, 1-TO-12
LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER
SIMPLIFIED BLOCK DIAGRAM
XTAL1
XTAL2
CLK0
CLK1
CLK_SEL
REF_SEL
EXT_FB
VCO_SEL
PLL_SEL
nMR/OE
1
0
0
1
PLL
VCO RANGE
200MHz - 480MHz
0
÷2
0
1
÷1
1
FRZ_CLK
FRZ_DATA
FSEL_A[0:1]
2
FSEL_
A1 A0 QAx
0 0 ÷4
0 1 ÷6
1 0 ÷8
1 1 ÷12
FSEL_B[0:1]
2
FSEL_
B1 B0 QBx
0 0 ÷4
0 1 ÷6
1 0 ÷8
1 1 ÷10
FSEL_C[0:1]
2
FSEL_
C1 C0 QCx
0 0 ÷2
0 1 ÷4
1 0 ÷6
0
1 1 ÷8
1
INV_CLK
FSEL_FB[0:2]
3
FSEL_
FB2 FB1 FB0 QFB
0 0 0 ÷4
0 0 1 ÷6
0 1 0 ÷8
0 1 1 ÷10
1 0 0 ÷8
1 0 1 ÷12
1 1 0 ÷16
1 1 1 ÷20
OUTPUT DISABLE
CIRCUITRY
SYNC
FRZ
SYNC
FRZ
SYNC
FRZ
SYNC
FRZ
SYNC
FRZ
SYNC
FRZ
SYNC
FRZ
SYNC
FRZ
SYNC
FRZ
SYNC
FRZ
SYNC
FRZ
SYNC
FRZ
QA0
QA1
QA2
QA3
QB0
QB1
QB2
QB3
QC0
QC1
QC2
QC3
QFB
QSYNC
87972DYI
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3
REV. E JUNE 25, 2010