ICS843002I-41 Datasheet, PDF (4/23 Pages) Integrated Circuit Systems – 700MHz, FEMTOCLOCKS-TM VCXO BASED SONET/SDH JITTER ATTENUATOR

ICS843002I-41
700MHZ, FEMTOCLOCKS™ VCXO BASED SONET/SDH JITTER ATTENUATOR
Table 2. Pin Characteristics
Symbol
Parameter
C_IN
Input Capacitance
R_PULLUP
Input Pullup Resistor
R_PULLDOWN Input Pulldown Resistor
Test Conditions
Minimum
Typical
4
50
50
Maximum
Units
pF
kΩ
kΩ
Function Tables
Table 3A. Input Reference Selection Function Table
Input
Function
CLK_SEL
Input Selected
0
CLK0/nCLK0
1
CLK1/nCLK1
Table 3B. Input Reference Divider Selection Function Table
Inputs
Function
R_SEL2
R_SEL1
R_SEL0
R Divider Value or State
0
0
0
÷1
0
0
1
÷2
0
1
0
÷4
0
1
1
÷8
1
0
0
÷16
1
0
1
÷32
1
1
0
bypass VCXO PLL
1
1
1
bypass VCXO and FemtoClock PLLs
Table 3B. Output Divider Selection Function Table
Inputs
Function
QX_SEL2
QX_SEL1
QX_SEL0
Output Divider Value or State
0
0
0
Output QX/nQX (Hi-Z)
0
0
1
÷32
0
1
0
÷8
0
1
1
÷4
1
0
0
÷16
1
0
1
÷2
1
1
0
÷1
1
1
1
Output QX at LVPECL V_OL, Output nQX at LVPECL V_OH
IDT™ / ICS™ VCXO BASED SONET/SDH JITTER ATTENUATOR
4
ICS843002AKI-41 REV. A OCTOBER 25, 2007