82563EB Datasheet, PDF (38/52 Pages) Intel Corporation – Intel® 82563EB/82564EB Gigabit Ethernet Controllers

82563EB/82564EB Gigabit Platform LAN Connect Networking Silicon
Table 32. Specification for External Clock Oscillator
Parameter Name
Symbol
Frequency
f_o
Swing
V_p-p
Frequency Tolerance
∆f/f_o
Operating Temperature
T_opr
Aging
∆f/f_o
Value
25.0 [MHz]
3.3 ± 0.3 [V]
±30 [ppm]
-0 to +70 [°C]
±5 ppm per year
Conditions
@25 [°C]
-
-0 to +70 [°C]
-
-
4.8
Reset and Initial Clock Timing
PHY_PWR_GOOD must be low throughout the time that the power supplies are ramping. This
guarantees that the 82563EB/82564EB resets cleanly.
Power Stable
VDDO, AVDDR (3.3V)
AVDD, AVDDF (1.9V)
DVDD (1.2V)
XTAL1
PHY _PWR _GOOD
PHY _CLK _OUT
Figure 10. 82563EB/82564EB Reset Timing
Oscillator Stable
Txoc
Tppg
Tpco
32