ICS8714008I Datasheet, PDF (6/34 Pages) Integrated Device Technology – Output frequency range

ICS8714008I DATA SHEET
FEMTOCLOCK^® ZERO DELAY BUFFER/CLOCK GENERATOR FOR PCI EXPRESS^TM AND ETHERNET
Function Tables
Table 3A. Common Configuration Table (not exhaustive)^{NOTE 1}
Input
Output
Frequency Frequency Application
Frequency
Mult. Factor
100MHz
100MHz PCIe Buffer
1
125MHz
125MHz PCIe, Ethernet Buffer
1
100MHz
125MHz PCIe Multiplier
5/4
125MHz
100MHz PCIe Divider
4/5
25MHz
100MHz PCIe Multiplier
4
25MHz
125MHz PCIe, Ethernet Multiplier
5
25MHz
156.25MHz XAUI Multiplier
25/4
62.5MHz
125MHz Ethernet Multiplier
2
53.125MHz 106.25MHz Fibre Channel Multiplier
2
PDIV
÷1
÷1
÷1
÷1
÷1
÷1
÷1
÷1
÷1
FBI_DIV
÷1
÷1
÷1
÷1
÷4
÷4
÷5
÷2
÷2
FBO_DIV
÷5
÷4
÷5
÷4
÷5
÷5
÷5
÷4
÷5
QDIVx
÷5
÷4
÷4
÷5
÷5
÷4
÷4
÷4
÷5
NOTE 1: This table shows more common configurations and is not exhaustive. When using alternate configurations, the designer must ensure
the VCO frequency is always within its range of 490MHz – 660MHz.
Table 3B. Output Enable Truth Table
Inputs
OE2
OE1
OE0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
State
Q[0:7], nQ[0:7]
Q0, nQ0 switching; Q[1:7], nQ[1:7] = High-impedance
Q[0:1], nQ[0:1] switching; Q[2:7], nQ[2:7] = High-impedance
Q[0:2], nQ[0:2] switching; Q[3:7], nQ[3:7] = High-impedance
Q[0:3], nQ[0:3] switching; Q[4:7], nQ[4:7] = High-impedance
Q[0:4], nQ[0:4] switching; Q[5:7], nQ[5:7] = High-impedance
Q[0:5], nQ[0:5] switching; Q[6:7], nQ[6:7] = High-impedance
Q[0:6], nQ[0:6] switching; Q7, nQ7 = High-impedance
All output pairs switching (default)
ICS8714008DKI REVISION A NOVEMBER 25, 2013
6
©2013 Integrated Device Technology, Inc.