ICS932S421B Datasheet, PDF (10/23 Pages) Integrated Device Technology – PCIe Gen2 and QPI Clock for Intel-Based Servers

ICS932S421B
PCIe Gen2 and QPI Clock for Intel-Based Servers
Electrical Characteristics - REF
PARAMETER
Long Accuracy
SYMBOL
CONDITIONS
MIN
TYP
ppm see Tperiod min-max values
-100
0
Clock period
Absolute Clock period
T_period
T_pabs
14.318MHz output nominal
14.318MHz output including
jitter
69.8343 69.84128
68.8343
Clock High Time
T_HIGH
1.5V
27.533718
Clock Low Time
T_LOW
1.5V
27.533718
Output High Voltage
V_OH
I_OH = -1 mA
2.4
Output Low Voltage
V_OL
I_OL = 1 mA
Output High Current
I_OH
V _OH @MIN = 1.0 V
V_OH@MAX = 3.135 V
-33
Output Low Current
I_OL
V_OL @ MIN = 1.95 V
V_OL @ MAX = 0.4 V
30
Edge Rate
t_slewr/f
Rising/Falling edge rate
1
Rise Time
t_r1
V_OL = 0.4 V, V_OH = 2.4 V
0.5
Fall Time
t_f1
V_OH = 2.4 V, V_OL = 0.4 V
0.5
Skew
t_sk1
V_T = 1.5 V
Duty Cycle
d_t1
V_T = 1.5 V
45
Jitter
t_jcyc-cyc
*TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%
V_T = 1.5 V
1_{Guaranteed by design and characterization, not 100% tested in production.}
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is at 14.31818MHz}
MAX
100
69.8483
70.8483
N/A
N/A
0.4
-33
38
4
2
2
500
55
1000
UNITS
ppm
ns
Notes
1,2
2
ns
2
ns
1
ns
1
V
1
V
1
mA
1
mA
1
mA
1
mA
1
V/ns
1
ns
1
ns
1
ps
1
%
1
ps
1
Electrical Characteristics - Differential Jitter Parameters
PARAMETER
Symbol
Conditions
Min
t_jphasePLL
t_jphaseLo
PCIe Gen 1
PCIe Gen 2
10kHz < f < 1.5MHz
t_jphaseHigh
PCIe Gen 2
1.5MHz < f < Nyquist (50MHz)
Jitter, Phase
t_{jphFBD1_3.2}
G
FBD1 3.2/4G
11MHz to 33MHz
t_{jphFBD1_4.0}
G
t_jphQPI
FBD1 4.8G
11MHz to 33MHz
QPI 133MHz 6.4GB_12UI
CPU outputs only
*TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%
1_{Guaranteed by design and characterization, not 100% tested in production.}
2_{See http://www.pcisig.com for complete specs}
TYP
40
1.7
2.2
2.5
2
0.25
Max
Units Notes
86
ps (p-p) 1,2
3
ps
1,2
(RMS)
3.1
ps
(RMS)
1,2
3
ps
1,2
(RMS)
2.5
ps
(RMS)
1,2
0.5
ps
1,2
(RMS)
IDT^TM PCIe Gen2 and QPI Clock for Intel-Based Servers
10
1340G—01/26/10