ICS950211 Datasheet, PDF (13/21 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for P4

Integrated
Circuit
Systems, Inc.
ICS950211
Electrical Characteristics - CPUCLK
T_A = 0 - 70°C; V_DD = 3.3 V +/-5%; (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
Current Source
Output Impedance
Z_O
V_O = V_X
Output High Voltage
Output High Current
Rise Time¹
Differential Crossover
Voltage¹
Duty Cycle¹
Skew¹, CPU to CPU
Jitter, Cycle-to-cycle¹
V_OH
I_OH
t_r
V_X
d_t
t_sk
t_jcyc-cyc
V_R = 475W +1%; IREF = 2.32mA; I_OH = 6*IREF
V_OL = 20%, V_OH = 80%
Note 3
V_T = 50%
V_T = 50%
V_T = V_X
Notes:
1 - Guaranteed by design, not 100% tested in production.
MIN TYP
3000
0.71
-13.92
175
45
50
45 49.4
40
90
MAX UNITS
Ω
1.2
V
mA
700 ps
55
%
55
%
100 ps
150 ps
Electrical Characteristics - PCICLK
T_A = 0 - 70°C; V_DD = 3.3 V +/-5%; C_L = 10-30 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
Output Frequency
Output Impedance
Output High Voltage
F0¹
R_DSN11
V_OH1
V_O = V_DD*(0.5)
I_OH = -1 mA
Output Low Voltage
Output High Current
V_OL1
I_OH1
I_OL = 1 mA
VOH@ MIN = 1.0 V, VOH@ MAX = 3.135 V
Output Low Current
Rise Time
Fall Time
Duty Cycle
Skew
Jitter
I_OL1
t_r11
t_f11
d_t11
t_sk11
t_jcyc-cyc1
VOL@ MIN = 1.95 V, VOL@ MAX= 0.4
V_OL = 0.4 V, V_OH = 2.4 V
V_OH = 2.4 V, V_OL = 0.4 V
V_T = 1.5 V
V_T = 1.5 V
V_T = 1.5 V
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
33.33
MHz
12
55
Ω
2.4
V
0.55 V
-33
-33 mA
30
38 mA
0.5 1.52
2
ns
0.5 1.45
2
ns
45 51.5 55
%
155 500 ps
123 250 ps
0465E—05/17/05
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