ICS952621 Datasheet, PDF (7/15 Pages) Integrated Circuit Systems – Programmable Timing Control Hub™ for Next Gen P4™ processor

Integrated
Circuit
Systems, Inc.
ICS952621
Electrical Characteristics - VCH, USB
T_A = 0 - 70°C; V_DD = 3.3V +/-5%; C_L = 10-20 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS Notes
Long Accuracy
Clock period
Output High Voltage
Output Low Voltage
Output High Current
Output Low Current
Edge Rate
ppm
T_period
V_OH
V_OL
I_OH
I_OL
see Tperiod min-max values
48.008MHz output nominal
I_OH = -1 mA
I_OL = 1 mA
V _OH = 1.0 V
V_OH = 3.135 V
V_OL = 1.95 V
V_OL = 0.4 V
Rising edge rate
-200
20.8257
2.4
-23
29
1
200 ppm 1,2
20.8340 ns 2
V
0.55 V
-29 mA
mA
mA
27 mA
2 V/ns 1
Edge Rate
Falling edge rate
1
2 V/ns 1
Rise Time
Fall Time
Duty Cycle
Skew
Long Term Jitter
t_r1
V_OL = 0.4 V, V_OH = 2.4 V
1
1.45
2
ns 1
t_f1
V_OH = 2.4 V, V_OL = 0.4 V
1
1.37
2
ns 1
d_t1
V_T = 1.5 V
45
52.5
55
%
1
t_sk1
V_T = 1.5 V
1
ns 1
125us period jitter
(8kHz frequency modulation
0.628
6
ns 1
amplitude)
1_{Guaranteed by design, not 100% tested in production.}
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at}
14.31818MHz
Electrical Characteristics - 48MHz DOT Clock
T_A = 0 - 70°C; V_DD = 3.3V +/-5%; C_L = 5-10 pF (unless otherwise specified)
PARAMETER
Long Accuracy
Clock period
Output High Voltage
Output Low Voltage
Output High Current
Output Low Current
Edge Rate
SYMBOL
ppm
T_period
V_OH
V_OL
I_OH
I_OL
CONDITIONS
see Tperiod min-max values
48.008MHz output nominal
I_OH = -1 mA
I_OL = 1 mA
V _OH = 1.0 V
V_OH = 3.135 V
V_OL = 1.95 V
V_OL = 0.4 V
Rising edge rate
Edge Rate
Falling edge rate
MIN
-200
20.8257
2.4
-23
29
2
2
TYP
MAX
200
20.8340
0.55
-29
27
4
4
UNITS
ppm
ns
V
V
mA
mA
mA
mA
V/ns
V/ns
Rise Time
t_r1
V_OL = 0.4 V, V_OH = 2.4 V
0.5 0.87
1
ns
Fall Time
t_f1
V_OH = 2.4 V, V_OL = 0.4 V
0.5 0.89
1
ns
Duty Cycle
d_t1
V_T = 1.5 V
45 52.3 55
%
Skew
t_sk1
V_T = 1.5 V
1
ns
125us period jitter
Long Term Jitter
(8kHz frequency modulation
0.636 2
ns
amplitude)
1_{Guaranteed by design, not 100% tested in production.}
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at}
14.31818MHz
Notes
1,2
2
1
1
1
1
1
1
1
0756A—09/10/04
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