ICS843002I-41 Datasheet, PDF (2/23 Pages) Integrated Circuit Systems – 700MHz, FEMTOCLOCKS-TM VCXO BASED SONET/SDH JITTER ATTENUATOR

ICS843002I-41
700MHZ, FEMTOCLOCKS™ VCXO BASED SONET/SDH JITTER ATTENUATOR
Block Diagram
V_{CCO_LVCMOS}
CLK1
nCLK1
LOR1
CLK0
nCLK0
LOR0
CLK_SEL
ICS843002I-41
Activity
Detector
1
0
Activity
Detector
R_SEL2:0 ³
R Divider =
1, 2, 4, 8,
16 or 32
Divide
by 32
External
Loop
Components
19.44 MHz
Pullable
xtal
ISET
LF0
LF1
Phase
Detector
Charge
Pump
and Loop
Filter
19.44 MHz
VCXO
Divide
by 32
VCXO Jitter Attenuation PLL
622.08 MHz
110
FemtoClock
PLL
111
110
x32
Cx Divider =
1,2,4,8,16,32,
HiZ or Disable
111
Cx Divider =
1,2,4,8,16,32,
HiZ or Disable
NOTE: 19.44MHz VCXO crystal shown is typical for SONET/SDH device applications.
V_{CCO_PECL}
QA
nQA
3 _{QA_SEL2:0}
QB
nQB
3 _{QB_SEL2:0}
IDT™ / ICS™ VCXO BASED SONET/SDH JITTER ATTENUATOR
2
ICS843002AKI-41 REV. A OCTOBER 25, 2007