932SQ420D
PCIE GEN 2/3 & QPI CLOCK FOR ROMLEY-BASED SERVERS
AC Electrical Characteristics - Differential Current Mode Outputs
TA = TCOM; Supply Voltage VDD = 3.3 V +/-5%
PARAMETER
SYMBOL
CONDITIONS
MIN
45
TYP
50.1
MAX
55
UNITS NOTES
Measured differentially, PLL
Duty Cycle
tDC
%
ps
ps
1
1
1
Mode
Across all SRC outputs,
tsk3SRC
Skew, Output to Output
13.5
43
50
50
VT = 50%
Across all CPU outputs,
VT = 50%
tsk3CPU
tjcyc-cyc
Skew, Output to Output
Jitter, Cycle to cycle
CPU, SRC, NS_SAS outputs
DOT96 output
35
75
50
250
ps
ps
1,3
1,3
1Guaranteed by design and characterization, not 100% tested in production.
2 IREF = VDD/(3xR ). For R = 475 (1%), I
= 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ Z =50 .
Ω
O
Ω
R
R
REF
3 Measured from differential waveform
Electrical Characteristics - Phase Jitter Parameters
TA = 0 - 70°C; Supply Voltage VDD/VDDA = 3.3 V +/-5%,
PARAMETER
SYMBOL
tjphPCIeG1
CONDITIONS
PCIe Gen 1
MIN
TYP
28
MAX
86
UNITS Notes
ps (p-p) 1,2,3,6
PCIe Gen 2 Lo Band
10kHz < f < 1.5MHz
PCIe Gen 2 High Band
1.5MHz < f < Nyquist (50MHz)
PCIe Gen 3
ps
0.9
1.7
3
1,2,6
(rms)
tjphPCIeG2
ps
3.1
1,2,6
(rms)
ps
1
tjphPCIeG3
(PLL BW of 2-4MHz, CDR =
10MHz)
0.4
1,2,4,6
(rms)
QPI & SMI
(100MHz or 133MHz, 4.8Gb/s,
6.4Gb/s 12UI)
ps
0.15
0.5
1,5,7
(rms)
Phase Jitter
tjphQPI_SMI
QPI & SMI
(100MHz, 8.0Gb/s, 12UI)
QPI & SMI
(100MHz, 9.6Gb/s, 12UI)
SAS12G
ps
0.13
0.11
0.3
0.2
1,5,7
(rms)
ps
1,5,7
(rms)
ps
tjphSAS12G
(Filtered REFCLK Jitter 20KHz
to 20MHz.)
0.34
0.70
0.4
1.3
1,8,9
(rms)
ps
tjphSAS12G
SAS 12G
1,5,8
(rms)
1 Guaranteed by design and characterization, not 100% tested in production.
2 See http://www.pcisig.com for complete specs
3 Sample size of at least 100K cycles. This figures extrapolates to 108ps pk-pk @ 1M cycles for a BER of 1-12.
4 Subject to final radification by PCI SIG.
5 Calculated from Intel-supplied Clock Jitter Tool v 1.6.6
6 Applied to SRC outputs
7 Applies to CPU outputs
8 Applies to NS_SAS, NS_SRC outputs, Spread Off
9 Intel calculation from raw phase noise data
IDT® PCIE GEN 2/3 & QPI CLOCK FOR ROMLEY-BASED SERVERS
11
932SQ420D
REV H 042012
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
