932SQ420DGLFT Datasheet, PDF (8/27 Pages) Integrated Device Technology – PCIE GEN 2/3 & QPI CLOCK FOR ROMLEY-BASED SERVERS

932SQ420D
PCIE GEN 2/3 & QPI CLOCK FOR ROMLEY-BASED SERVERS
Test Loads and Recommended Terminations
932SQ420 Differential Test Loads
HCSL Output
Buffer
Rs
Differential Zo
Rs
Rp Rp
Differential Output Termination Table
DIF Zo (Ω) Iref (Ω) Rs (Ω)
2pF
2pF
Rp (Ω)
100
475
33
50
85
412
27 42.3 or 43.2
Single-ended Output Termination Table
Rs Value
Output
(for each load)
Loads Zo = 50^Ω Zo =60^Ω
PCI/USB
1
36
43
PCI/USB
2
22
33
REF
1
39
47
REF
2
27
36
REF
3
10
20
IDT® PCIE GEN 2/3 & QPI CLOCK FOR ROMLEY-BASED SERVERS
8
932SQ420D
REV H 042012