ICS950602 Datasheet, PDF (10/16 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for PII/III

Integrated
Circuit
Systems, Inc.
ICS950602
Electrical Characteristics - CPUCLK(T,C)
T_A = 0 - 70°C; V_DD=3.3V +/-5%; loads from Intel CK408B spec, Rev 1.1 (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN
Current Source
Output Impedance¹
Output High Voltage
Output High Current
Rise Time¹
Fall Time¹
Z_O2A
V_OH2A
I_OH32A
t_r2A
t_f2A
V_O = V_x
V_R = 475Ω +1%; IREF = 2.32 mA; I_OH = 6*IREF
V_OL = -0.35V, V_OH = 0.35V
V_OH = 0.35V, V_OL = -0.35V
3000
175
175
Differential Crossover
Voltage¹
V_2A
Rs = 33.2Ω, Rp = 63.4Ω to gnd, R_T-C = 475Ω
510
Duty Cycle¹
d_t2A
V_T = crossing point
45
Skew, CPUT,C to CPU¹
t_sk2A
V_T (CPU) = crossing point, V_T (PCI) = 1.25 V 100 MHz
133 MHz
Skew, CPUT,C to PCI^{1 t}sk2A1 ^VT ^{(CPU) = crossing point, V}T ^{(PCI) = 1.5 V}
2
Jitter, Cycle to cycle^{1 t}jcyc-cyc2A ^VT ^{= crossing point}
CPU,SD = 100MHz
1_{Guaranteed by design, not 100% tested in production.}
TYP
0.71
-13.92
220
230
700
49
250
170
3.2
50
MAX
1.2
467
467
900
55
300
200
4
200
UNITS
Ω
V
mA
ps
ps
mV
%
ps
ns
ps
Electrical Characteristics - CPUCLK(1:0)
T_A = 0 - 70°C; V_DD=3.3V +/-5%; C_L = 10-20 pF (unless otherwise specified)
PARAMETER
Output Impedance¹
Output Impedance¹
Output High Voltage
SYMBOL
R_DSP2B
R_DSN2B
V_OH2B
V_O = V_DD*(0.5)
V_O = V_DD*(0.5)
I_OH = -1 mA
CONDITIONS
Output Low Voltage
V_OL2B I_OL = 1 mA
Output High Current
I_OH2B
V_OH@MIN = 1.0 V, V_OH@MAX = 2.375 V
Output Low Current
Rise Time¹
Fall Time¹
I_OL2B
t_r2B
t_f2B
V_OL@MIN = 1.2 V, V_OL@MIN = 0.3 V
V_OL = 0.4V, V_OH = 2.0V
V_OH = 2.0V V_OL = 0.4V
Duty Cycle¹
d_t2B
V_T = 50%
100MHz
133 MHz
Skew, CPU to CPU¹
Skew, CPU to PCI¹
t_sk2B
t_sk2B1
V_T = 1.25 V
V_T (CPU) = 1.25 V, V_T (PCI) = 1.5 V
Jitter, Cycle to cycle¹
t_jcyc-cyc2B
V_T = 1.25V
CPU,SD = 100MHz
CPU,SD = 133 MHz
CPU = 100, SD = 133 MHz
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
13.5
13.5
45
45
Ω
2
V
0.4
-27
27
V
27
30
0.7
0.4
1.6 ns
0.8
50
45
55
%
54
60 175 ps
2
3.2
4
ns
140 250
100 250 ps
220 275
0469B—12/18/02
10