ICS9LPRS462 datasheet(13/24 Pages) RENESAS

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ICS9LPRS462

Low Power Clock for ATI RS/RD600 series chipsets for AMD CPUs

IDTTM/ICSTM

Low Power Clock for ATI RS/RD600 series chipsets for AMD CPUs

1378A—04/07/08

SRC Reference Clock

Common Recommendations for Differential Routing

Dimension or Value

Unit

Figure

L1 length, Route as non-coupled 50 ohm trace.

0.5 max

inch

L2 length, Route as non-coupled 50 ohm trace.

N/A

inch

L3 length, Route as non-coupled 50 ohm trace.

N/A

inch

ohm

49.9

ohm

Down Device Differential Routing

Dimension or Value

Unit

Figure

L4 length, Route as coupled microstrip 100 ohm differential trace.

2 min to 16 max

inch

L4 length, Route as coupled stripline 100 ohm differential trace.

1.8 min to 14.4 max

inch

Differential Routing to PCI Express Connector

Dimension or Value

Unit

Figure

L4 length, Route as coupled microstrip 100 ohm differential trace.

0.25 to 14 max

inch

L4 length, Route as coupled stripline 100 ohm differential trace.

0.225 min to 12.6 max

inch

Figure 2 Down device routing.

PCI Ex Board

Down Device

REF_CLK Input

L1’

L4’

Figure 2

Figure 3 PCI Express Connector Routing.

Low Power Output Buffer

w/integrated series resistor

PCI Ex

Add In Board

REF_CLK Input

L1’

L4’

Figure 3

Low Power Output Buffer

w/integrated series resistor

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