ICS950908 Datasheet, PDF (14/22 Pages) Integrated Circuit Systems – Programmable Timing Control Hub™ for P4™

Integrated
Circuit
Systems, Inc.
ICS950908
Preliminary Product Preview
Electrical Characteristics - CPUCLKC/T
T_A = 0 - 70º 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 = 475Ω +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 MAX UNITS
3000
W
0.71 1.2
V
-13.92
mA
175
700 ps
45
50
55
%
45
51
55
%
150 ps
200 ps
Electrical Characteristics - CPUCLKT/C_CS
T_A = 0 - 70ÜC; V_DD = 2.5 V +/-5%; C_L = 20 pF (unless otherwise stated)
PARAMETER SYMBOL
CONDITIONS
Output High Voltage
Output Low Voltage
Output High Current
Output Low Current
Rise Time
Differential Crossover
Voltage¹
Duty Cycle
Skew
Jitter, Cycle-to-cycle
Jitter, One Sigma
Jitter, Absolute
V_OH2B
V_OL2B
I_OH2B
I_OL2B
t_r2B1
V_X
d_t2B1
t_sk2B1
t_jcyc-cyc2B1
t_j1s2B1
t_jabs2B1
I_OH = -12.0 mA
I_OL = 12 mA
V_OH = 1.7 V
V_OL = 0.7 V
V_OL = 0.4 V, V_OH = 2.0 V
Note 3
V_T = 1.25 V
V_T = 1.25 V
V_T = 1.25 V
V_T = 1.25 V
V_T = 1.25 V
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
2
V
0.4 V
-19 mA
19
mA
1.6 ns
45
50
55
%
45
55 %
175 ps
250 ps
150 ps
-250
+250 ps
0653A—07/26/04
14