ICS952004 Datasheet, PDF (13/19 Pages) Integrated Circuit Systems – Programmable Timing Control Hub™ for P4™ processor

Integrated
Circuit
Systems, Inc.
ICS952004
Electrical Characteristics - CPU (0.7V Select)
T_A = 0 - 70C; V_DD=3.3V +/-5%; C_L = 2pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Current Source Output
Impedance
Zo¹
V_O = V_x
3000
Ω
Voltage High
VHigh Statistical measurement on single 660 773 850
Voltage Low
VLow
ended signal using oscilloscope
math function.
-150
38
150 ^mV
Max Voltage
Min Voltage
Vovs
Vuds
Measurement on single ended
signal using absolute value.
-450
788 1150
-2
mV
Crossing Voltage (abs) Vcross(abs)
250 342 550 mV
Crossing Voltage (var)
d-Vcross
Variation of crossing over all
edges
28 140 mV
Rise Time
Fall Time
Rise Time Variation
Fall Time Variation
Duty Cycle
t_r
V_OL = 0.175V, V_OH = 0.525V
175 314 700 ps
t_f
V_OH = 0.525V V_OL = 0.175V
175 396 700 ps
d-t_r
15 125 ps
d-t_f
46 125 ps
d_t3
Measurement from differential
wavefrom
45
51
55
%
Skew
t_sk3
V_T = 50%
Jitter, Cycle to cycle
t_jcyc-cyc1
V_T = 50%
1_{Guaranteed by design, not 100% tested in production.}
2 _{IOWT can be varied and is selectable thru the MULTSEL pin.}
23 100 ps
57 150 ps
Electrical Characteristics - SDRAM
T_A = 0 - 70C; V_DD=3.3V +/-5%; C_L = 10-30 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
Output Impedance
Output High Voltage
Output Low Voltage
R_DSP11
V_OH1
V_OL1
V_O = V_DD*(0.5)
I_OH = -1 mA
I_OL = 1 mA
Output High Current
I_OH1
V _OH@MIN = 1.0 V,
V _OH@MAX = 3.135 V
Output Low Current
I_OL1
V_{OL @MIN} = 1.95 V,
V_{OL @MAX} = 0.4 V
Rise Time
t_r11
V_OL = 0.4 V, V_OH = 2.4 V
Fall Time
t_f11
V_OH = 2.4 V, V_OL = 0.4 V
Duty Cycle
d_t11
V_T = 1.5 V
Jitter
t_jcyc-cyc1
V_T = 1.5 V 3V66
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
12
55
Ω
2.4 3.25
V
0.05 0.55
V
-66 -130
-15 -33
mA
60 145
59 72
mA
0.5 0.65 2
ns
0.5 0.61 2
ns
45 46 55
%
172 200
ps
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