ICS951402 Datasheet, PDF (18/23 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for P4 processor

Integrated
Circuit
Systems, Inc.
ICS951402
Advance Information
Electrical Characteristics - VCH, 48MHz DOT, 48MHz, USB
T_A = 0 - 70C; VDD=3.3V +/-5%; C_L = 10-20 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Frequency
Output Impedance
Output High Voltage
Output Low Voltage
F_O1
R_DSP11
V_OH1
V_OL1
V_O = V_DD*(0.5)
I_OH = -1 mA
I_OL = 1 mA
48
20 48 60
2.4
0.4
Output High Current
I_OH1
V _OH@MIN = 1.0 V, V _OH@MAX =
-29
3.135 V
-23
Output Low Current
I_OL1
V_{OL @MIN} = 1.95 V, V_{OL @MAX} =
29
0.4 V
27
48DOT Rise Time
t_r11
48DOT Fall Time
t_f
1
1
VCH 48 USB Rise Time
t_r11
VCH 48 USB Fall Time
t_f
1
1
48 DOT Duty Cycle
d_t11
V_OL = 0.4 V, V_OH = 2.4 V
V_OH = 2.4 V, V_OL = 0.4 V
V_OL = 0.4 V, V_OH = 2.4 V
V_OH = 2.4 V, V_OL = 0.4 V
V_T = 1.5 V
0.5 0.6
1
0.5 0.8
1
1
1.2
2
1
1.3
2
45 52.8 55
VCH 48 USB Duty Cycle
d_t11
V_T = 1.5 V
45 53.5 55
48 DOT Jitter
USB to DOT Skew
VCH Jitter
t_jcyc-cy
1
c
t_sk11
t_jcyc-cy
1
c
V_T = 1.5 V
V_T = 1.5 V (0 OR 180 degrees)
V_T = 1.5 V
183 350
0.43 1
223 350
1_{Guaranteed by design, not 100% tested in production.}
MHz
W
V
V
mA
mA
ns
ns
ns
ns
%
%
ps
ns
ps
Electrical Characteristics - SDRAM
T_A = 0 - 70C; V_DD =V_DDL 3.3 V +/-5%; C_L = 30 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
Output Impedance
Output Impedance
R_DSP2A1
R_DSN2A1
V_O = V_DD*(0.5)
V_O = V_DD*(0.5)
Output High Voltage
V_OH2A I_OH = -28 mA
Output Low Voltage
V_OL2A I_OL = 19 mA
Output High Current
I_OH2A V_OH = 2.0 V
Output Low Current
Rise Time
Fall Time
Duty Cycle
Jitter¹
I_OL2A
t_r2A1
t_f2A1
d_t2A1
t_cyc-cyc
V_OL = 0.8 V
V_OL = 0.4 V, V_OH = 2.4 V
V_OH = 2.4 V, V_OL = 0.4 V
V_T = 1.5 V
V_T = 1.5 V
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
10
20 Ω
10
20 Ω
2.4
V
0.4 V
-42 mA
33
mA
0.5
2.0 ns
0.5
2 ns
45
55 %
250.0 ps
0660—05/05/05
18