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