IDTTM
Programmable Timing Control HubTM for Intel Systems
1408A—01/25/10
ICS9E4101
Programmable Timing Control HubTM for Intel Systems
13
Electrical Characteristics - CPU 0.7V Current Mode Differential Pair
TA = -40 to 85°C; VDD = 3.3 V +/-5%; CL =2pF, RS=33.2
, R
P=49.9
, Ι
REF
= 475
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
Current Source Output
Impedance
Zo
VO = Vx
3000
1
Voltage High
VHigh
660
850
1
Voltage Low
VLow
-150
150
1
Max VoltageVovs
1150
1
Min Voltage
Vuds
-300
1
Crossing Voltage (abs)
Vcross(abs)
250
550
mV
1
Crossing Voltage (var)
d-Vcross
Variation of crossing over all edges
140
mV
1
Long Accuracy
ppm
see Tperiod min-max values
-300
300
ppm
1,2
400MHz nominal
2.4993
2.5008
ns
2
400MHz spread
2.4993
2.5133
ns
2
333.33MHz nominal
2.9991
3.0009
ns
2
333.33MHz spread
2.9991
3.016
ns
2
266.66MHz nominal
3.7489
3.7511
ns
2
266.66MHz spread
3.7489
3.77
ns
2
200MHz nominal
4.9985
5.0015
ns
2
200MHz spread
4.9985
5.0266
ns
2
166.66MHz nominal
5.9982
6.0018
ns
2
166.66MHz spread
5.9982
6.0320
ns
2
133.33MHz nominal
7.4978
7.5023
ns
2
133.33MHz spread
7.4978
5.4000
ns
2
100.00MHz nominal
9.9970
10.0030
ns
2
100.00MHz spread
9.9970
10.0533
ns
2
400MHz nominal/spread
2.4143
ns
1,2
333.33MHz nominal/spread
2.9141
ns
1,2
266.66MHz nominal/spread
3.6639
ns
1,2
200MHz nominal/spread
4.8735
ns
1,2
166.66MHz nominal/spread
5.8732
ns
1,2
133.33MHz nominal/spread
7.3728
ns
1,2
100.00MHz nominal/spread
9.8720
ns
1,2
Rise Time
tr
VOL = 0.175V, VOH = 0.525V
175
700
ps
1
Fall Time
tf
VOH = 0.525V VOL = 0.175V
175
700
ps
1
Rise Time Variation
d-tr
125
ps
1
Fall Time Variation
d-tf
125
ps
1
Duty Cycle
dt3
Measurement from differential
wavefrom
45
55
%
1
Skew
tsk3
CPU (1:0) VT = 50%
100
ps
1
Skew
tsk4
CPU (1:0) to CPU_ITP, VT = 50%
150
ps
1
Jitter, Cycle to cycle
tjcyc-cyc
Measurement from differential
wavefrom
85
ps
1
1Guaranteed 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
Tabsmin
Absolute min period
Statistical measurement on single
ended signal using oscilloscope
math function.
mV
Measurement on single ended
signal using absolute value.
mV
Average period
Tperiod