ICS932S421B Datasheet, PDF (9/23 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 - USB48MHz
PARAMETER
SYMBOL
CONDITIONS*
Long Accuracy
ppm see Tperiod min-max values
Clock period
T_period
48.00MHz output nominal
MIN
0
20.8333
TYP
20.83333
Absolute Clock period
T_pabs 48.00MHz output including jitter 20.4833
Output Impedance
Output High Voltage
Clock High Time
Clock Low Time
Output Low Voltage
Output High Current
Output Low Current
R_DSP
V_OH
T_HIGH
T_LOW
V_OL
I_OH
I_OL
V_O = V_DD*(0.5)
I_OH = -1 mA
1.5V
1.5V
I_OL = 1 mA
V _OH @MIN = 1.0 V
V_OH@MAX = 3.135 V
V_OL @ MIN = 1.95 V
V_OL @ MAX = 0.4 V
12
2.4
8.094
7.694
-29
29
Edge Rate
t_{slewr/f_USB} USB48 Rising/Falling edge rate
1
Rise Time
t_{r_USB}
V_OL = 0.4 V, V_OH = 2.4 V
1
Fall Time
t_{f_USB}
V_OH = 2.4 V, V_OL = 0.4 V
1
Duty Cycle
d_t1
V_T = 1.5 V
45
Group Skew
t_skew
V_T = 1.5 V
Jitter, Cycle to cycle
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
0
20.8333
21.1833
55
10.036
9.836
0.55
-33
27
2
2
2
55
250
350
UNITS NOTES
ppm
1,2
ns
2
ns
2
1
V
1
ns
1
ns
1
V
1
mA
1
mA
1
mA
1
mA
1
V/ns
1
ns
1
ns
1
%
1
ps
1
ps
1
IDT^TM PCIe Gen2 and QPI Clock for Intel-Based Servers
9
1340G—01/26/10