ICS873990 Datasheet, PDF (2/16 Pages) Integrated Circuit Systems – LOW VOLTAGE, LVCMOS/ CRYSTAL-TO-LVPECL/ECL CLOCK GENERATOR

Integrated
Circuit
Systems, Inc.
BLOCK DIAGRAM
VCO_SEL ^Pulldown
PLL_EN ^Pulldown
REF_SEL ^Pulldown
TEST_CLK ^Pulldown
XTAL_IN
XTAL_OUT
XTAL
OSC
EXT_FB
nEXT_FB
MR ^Pulldown
FSEL_0:3 ^Pulldown
FSEL_FB0:2 ^Pulldown
SYNC_SEL ^Pulldown
ICS873990
LOW VOLTAGE, LVCMOS/
CRYSTAL-TO-LVPECL/ECL CLOCK GENERATOR
PHASE
DETECTOR
LPF
VCO
FREQUENCY
GENERATOR
SYNC
QA0
nQA0
QA1
nQA1
QA2
nQA2
QA3
nQA3
QB0
nQB0
QB1
nQB1
QB2
nQB2
QB3
nQB3
QC0
nQC0
QC1
nQC1
QC2
nQC2
QD0
nQD0
QD1
nQD1
QFB
nQFB
873990AY
www.icst.com/products/hiperclocks.html
2
REV. B JUNE 13, 2005