108
7.5 AC Electrical Characteristics
The specifications in this section are valid for the range of operating conditions defined in Table 24.
7.5.1 General AC specifications
Table 28. Clock requirements and switching characteristics
Parameter
Min
Max
Units
Conditions
Clock Frequency
25 – 100 ppm
25 + 100 ppm
MHz
P_TX_CLK_M_RX_CLK,
P_RX_CLK_M_TX_CLK
Clock Frequency
19.44 – 20 ppm
19.44 + 20 ppm
MHz
TX_SONETCLK,
RX_SONETCLK
SONET Clocks Min Low &
18
33.4
ns
Duty Cycle 35% - 65%
High Time
@ 51.4 ns
MII Clocks Min Low & High 14
26
ns
Duty Cycle 35% - 65%
Time
@ 40 ns
Output Rise Time
0.65
5
ns
Load = 15 pF (from 30% - 70% =
1.2 V)
Output Fall Time
0.65
5
ns
Load = 15 pF (from 30% -70% =
1.2 V)
HiZ Leakage Current
-10
10
µ
A
7.4 DC Characteristics
The specifications in this section are valid for the range of operating conditions defined in Table 24.
Table 26. DC Electrical Characteristics
Symbol Parameter
Min
Max
Conditions Units
V
OH
High Level Output Voltage
DVDD-0.1 DVDD I
OH
= 20
µ
A Volts
V
OL
Low Level Output Voltage
GND
0.4
I
OL
= 6mA
Volts
V
IH
High Level Input Voltage
0.7xDVDD DVDD
Volts
V
IL
Low Level Input Voltage
0.0
0.3xDVDD
Volts
I
IL
/I
IH
Input Leakage Current
-10.0
+10.0
µ
A
Table 27. Power Dissipation
Parameter
Min.
Typ.
Max.
Units
Power Dissipation (Operational)
250
450
mW