ICS954119 Datasheet, PDF (15/17 Pages) Integrated Circuit Systems – Programmable Timing Control Hub™ for Next Gen P4™ processor

Integrated
Circuit
Systems, Inc.
ICS954119
Advance Information
Electrical Characteristics - 48MHz/USB48MHz/24_48MHz
PARAMETER
Long Accuracy
SYMBOL
CONDITIONS*
MIN
TYP
MAX
UNITS
ppm
see Tperiod min-max values
-100
100
ppm
Clock period
Output Impedance
Output High Voltage
Output Low Voltage
Output High Current
Output Low Current
Edge Rate
T_period
R_DSP
V_OH
V_OL
I_OH
I_OL
t_slewr/f
48.00MHz output nominal
V_O = V_DD*(0.5)
I_OH = -1 mA
I_OL = 1 mA
V _OH @MIN = 1.0 V
V_OH@MAX = 3.135 V
V_OL @ MIN = 1.95 V
V_OL @ MAX = 0.4 V
Rising/Falling edge rate
20.8313
12
2.4
-33
30
1
20.8354
ns
55
Ω
V
0.55
V
mA
-33
mA
mA
38
mA
4
V/ns
Edge Rate
t_{slewr/f_USB} USB48 Rising/Falling edge rate
1
2
V/ns
Rise Time
t_r
V_OL = 0.4 V, V_OH = 2.4 V
0.5
2
ns
Fall Time
t_f
V_OH = 2.4 V, V_OL = 0.4 V
0.5
2
ns
Rise Time
t_{r_USB}
V_OL = 0.4 V, V_OH = 2.4 V
1
2
ns
Fall Time
t_{f_USB}
V_OH = 2.4 V, V_OL = 0.4 V
1
2
ns
Duty Cycle
d_t1
V_T = 1.5 V
45
55
%
Jitter, Cycle to cycle
t_jcyc-cyc
V_T = 1.5 V
500
ps
*TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%, CL = 20 pF with Rs = 7Ω (Rs is used in USB48MHz test only)
1_{Guaranteed by design and characterization, not 100% tested in production.}
Electrical Characteristics - DOT_96MHz 0.7V Current Mode Differential Pair
PARAMETER
SYMBOL
CONDITIONS*
MIN
TYP
MAX
UNITS
Current Source Output
Impedance
Zo
V_O = V_x
3000
Ω
Voltage High
VHigh
Statistical measurement on
660
850
mV
Voltage Low
VLow
single ended signal
-150
150
mV
Max Voltage
Min Voltage
Vovs
Vuds
Measurement on single ended
signal using absolute value.
-300
1150
mV
mV
Crossing Voltage (abs)
Crossing Voltage (var)
Long Accuracy
Average period
Absolute min period
Vx(abs)
d-Vcross
ppm
Tperiod
Tabsmin
Variation of crossing over all
edges
see Tperiod min-max values
96.00MHz nominal
96.00MHz nominal
250
-100
10.4135
10.1635
550
mV
140
mV
100
ppm
10.4198
ns
ns
Rise Time
t_r
V_OL = 0.175V, V_OH = 0.525V
175
700
ps
Fall Time
t_f
V_OH = 0.525V V_OL = 0.175V
175
700
ps
Rise Time Variation
d-t_r
V_OL = 0.175V, V_OH = 0.525V
125
ps
Fall Time Variation
Duty Cycle
d-t_f
V_OH = 0.525V V_OL = 0.175V
d_t3
Measurement from differential
wavefrom
45
125
ps
55
%
Jitter, Cycle to cycle
t_jcyc-cyc
Measurement from differential
wavefrom
250
ps
*T_A = 0 - 70°C; V_DD = 3.3 V +/-5%; C_L =2pF, R_S=33.2Ω, R_P=49.9Ω, Ι_REF = 475Ω
1_{Guaranteed by design and characterization, not 100% tested in production.}
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 14.31818MHz}
3_{IREF = VDD/(3xRR). For RR = 475Ω (1%), IREF = 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ ZO=50Ω.}
0875—05/24/04
NOTES
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Notes
1
1,3
1,3
1
1
1
1
1,2
2
1,2
1
1
1
1
1
1
15