ICS954101 Datasheet, PDF (9/16 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for Desktop P4 Systems

Integrated
Circuit
Systems, Inc.
ICS954101
Electrical Characteristics - PCICLK/PCICLK_F
T_A = 0 - 70°C; V_DD = 3.3 V +/-5%; C_L = 30 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS Notes
Long Accuracy
ppm
see Tperiod min-max values
-300
300
ppm
1,2
Clock period
T_period
33.33MHz output nominal
33.33MHz output spread
29.99100
29.99100
30.00900 ns
30.15980 ns
2
2
Absolute Min/Max Clock
period
T_abs
33.33MHz output nominal
33.33MHz output spread
29.49100
29.49100
30.50900 ns
30.65980 ns
2
2
Clk High Time
t_h1
12
Clock Low Time
t_l1
12
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
N/A
ns
1
N/A
ns
1
V
0.55
V
mA
-33
mA
mA
38
mA
Edge Rate
Rising edge rate
1
4
V/ns
1
Edge Rate
Falling edge rate
1
4
V/ns
1
Rise Time
t_r1
V_OL = 0.4 V, V_OH = 2.4 V
0.5
2
ns
1
Fall Time
t_f1
V_OH = 2.4 V, V_OL = 0.4 V
0.5
2
ns
1
Duty Cycle
d_t1
V_T = 1.5 V
45
55
%
1
Skew
t_sk1
V_T = 1.5 V
500
ps
1
Jitter
t_jcyc-cyc
V_T = 1.5 V
500
ps
1
1_{Guaranteed by design, not 100% tested in production.}
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFoutput is at 14.31818MHz}
Electrical Characteristics - USB_48MHz
T_A = 0 - 70°C; V_DD = 3.3 V +/-5%; C_L = 20 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS Notes
Long Accuracy
Clock period
Absolute Min/Max Clock
period
Clk High Time
Clock Low Time
Output High Current
Output Low Current
Edge Rate
ppm
T_period
T_abs
t_h1
t_l1
I_OH
I_OL
see Tperiod min-max values
48.0000MHz output nominal
Nominal
V _OH @ MIN = 1.0 V
V_OH@ MAX = 3.135 V
V_OL @MIN = 1.95 V
V_OL @ MAX = 0.4 V
Rising edge rate
-100
20.82570
20.48125
8.094
7.694
-33
30
1
100 ppm 1,2
20.83400 ns
2
21.18542 ns
2
10.036 ns
1
9.836 ns
1
mA
-33
mA
mA
38
mA
2
V/ns 1
Edge Rate
Falling edge rate
1
2
V/ns 1
Rise Time
t_r1
V_OL = 0.4 V, V_OH = 2.4 V
1 1.43 2
ns
1
Fall Time
t_f1
V_OH = 2.4 V, V_OL = 0.4 V
1 1.33 2
ns
1
Duty Cycle
d_t1
V_T = 1.5 V
45 48 55
%
1
Jitter, Cycle to cycle
t_jcyc-cyc
V_T = 1.5 V
350
ps
1
1_{Guaranteed by design, not 100% tested in production.}
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFoutput is at 14.31818MHz}
0815D—06/21/04
9