IDT
®
PC MAIN CLOCK 1520A—03/16/10
ICS9LRS4103
PC MAIN CLOCK
7
CPU SRC DOT96 CK_SSC_DISP
100 100 100 100
ppm
50 125 250 125
ps
-0.50% -0.50% 0 -0.50% %
Clock Periods - Differential Outputs with Spread Spectrum Disabled
1 Clock 1us 0.1s 0.1s 0.1s 1us 1 Clock
Long-Term
Average
Min
0 ppm Period
Nominal
AbsPer
Max
100.00 9.94900 9.99900 10.00000 10.00100 10.05100 ns 1,2
133.33 7.44925 7.49925 7.50000 7.50075 7.55075 ns 1,2
SRC 100.00 9.87400 9.99900 10.00000 10.00100 10.12600 ns 1,2
CK_SSC_DISP 120.00 8.20750 8.33250 8.33333 8.33417 8.45917 ns 1,2
DOT96 96.00 10.16563 10.41563 10.41667 10.41771 10.66771 ns 1,2
Clock Periods - Differential Outputs with Spread Spectrum Enabled
1 Clock 1us 0.1s 0.1s 0.1s 1us 1 Clock
Long-Term
Average
Min
0 ppm Period
Nominal
AbsPer
Max
99.75 9.94906 9.99906 10.02406 10.02506 10.02607 10.05107 10.10107 ns 1,2
133.00 7.44930 7.49930 7.51805 7.51880 7.51955 7.53830 7.58830 ns 1,2
SRC 99.75 9.87406 9.99906 10.02406 10.02506 10.02607 10.05107 10.17607 ns 1,2
CK_SSC_DISP 119.70 8.20755 8.33255 8.35338 8.35422 8.35505 8.37589 8.50089 ns 1,2
1
Guaranteed by design and characterization, not 100% tested in production.
Notes
Differential Clock Tolerances
2
All Long Term Accuracy specifications are guaranteed with the assumption that the crystal input is tuned to exactly 14.31818MHz.
UnitsSSC ON
Center
Freq.
MHz
Notes
PPM tolerance
SSC OFF
Center
Freq.
MHz
CPU