ics9fg1201 Integrated Device Technology, ics9fg1201 Datasheet - Page 17

• Manufacturer Part Number: ics9fg1201
• Description: Frequency Generator For P4tm Cpu, Pci-express* & Fully Buffered Dimm Clocks
• Manufacturer: Integrated Device Technology

IDT
ICS9FG1201H
Frequency Generator for CPU, PCIe Gen1* & Fully Buffered DIMM Clocks
TM
/ICS
TM
Frequency Generator for CPU, PCIe Gen1* & Fully Buffered DIMM Clocks
Figure 2
Figure 1 Down device routing.
Figure 1
Figure 2 PCI Express Connector Routing.
HSCL Output
HSCL Output
L1 length, Route as non-coupled 50 ohm trace.
L2 length, Route as non-coupled 50 ohm trace.
L3 length, Route as non-coupled 50 ohm trace.
Rs
Rt
L4 length, Route as coupled microstrip 100 ohm differential trace.
L4 length, Route as coupled stripline 100 ohm differential trace.
L4 length, Route as coupled microstrip 100 ohm differential trace.
L4 length, Route as coupled stripline 100 ohm differential trace.
Buffer
Buffer
Common Recommendations for Differential Routing
Differential Routing to PCI Express Connector
Down Device Differential Routing
L1
L1
L1’
L1’
Rs
Rs
Rs
Rs
L2’
L2
L2’
L2
L3’
L3’
SRC Reference Clock
Rt
Rt
L3
L3
17
Rt
Rt
L4’
49.9
0.5 max
0.2 max
0.2 max
2 min to 16 max
1.8 min to 14.4 max
0.25 to 14 max
0.225 min to 12.6 max
L4
L4’
33
L4
Dimension or Value
Dimension or Value
Dimension or Value
REF_CLK Input
Add In Board
PCI Ex
inch
inch
inch
inch
inch
ohm
ohm
inch
inch
Unit
Unit
Unit
REF_CLK Input
PCI Ex Board
Down Device
Figure
Figure
Figure
1
1
1
1
1
1
1
2
2
1371C — 02/12/08