ICS9DB102 datasheet(6/13 Pages) IDT

6 / 13 page

IDTTM/ICSTM

2 Output Express* Buffer with CLKREQ# Function

ICS9DB102

REV F 08/06/07

ICS9DB102

2 Output PCI Express* Buffer with CLKREQ# Function

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.

0.2 max

inch

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

0.2 max

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 1 Down device routing.

HSCL Output

Buffer

PCI Ex Board

Down Device

REF_CLK Input

L3’

L1’

L4’

Figure 1

Figure 2 PCI Express Connector Routing.

HSCL Output

Buffer

PCI Ex

Add In Board

REF_CLK Input

L3’

L1’

L2’

L4’

Figure 2

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