ics932s421 Integrated Device Technology, ics932s421 Datasheet - Page 10

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ics932s421

Manufacturer Part Number
ics932s421
Description
Pcie Gen 2 & Fbd Compliant Ck410b Ck410b+ Clock For Intel-based Servers
Manufacturer
Integrated Device Technology
Datasheet

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Single-ended Output Terminations
1340B—06/13/07
Integrated
Circuit
Systems, Inc.
Single-ended outputs at 2-load strength (Power up default
for all single-ended outputs)
Single-ended outputs at 1-load strength (REF clock only)
The singled-ended outputs of the ICS 932S421B default to a drive strength of 2
loads. The REF clocks can be turned down to 1-load strength via the SMBus.
Suggested termination resistors are as follows for transmission lines with Zo =
50 ohms:
SEPP Output Buffer
SEPP Output Buffer
(Single Ended
(Single Ended
ICS932S421B
Push Pull)
Push Pull)
Rs
Rs
Rs
10
Test Load
Zo
Zo
Zo
Driving 1 load, Rs = 33 ohms
Driving 2 loads, Rs = 7.5 ohms
Driving 1 load, Rs = 22 ohms
CL=5pF
CL=5pF
CL=5pF
ICS932S421B

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