IXP45X INTEL [Intel Corporation], IXP45X Datasheet - Page 115

• Manufacturer Part Number: IXP45X
• Description: Product Line of Network Processors
• Manufacturer: INTEL [Intel Corporation]

Datasheet—Intel
Figure 16.
5.6.1.2
Table 49.
5.6.1.3
Table 50.
August 2006
Document Number:
Typical Connection to an Oscillator
PCI Clock Timings
PCI Clock Timings
MII/SMII Clock Timings
MII/SMII Clock Timings
®
306261-004US
T
T
T
IXP45X and Intel
T
T
Frequency
PERIODPCICLK
period100Mbit
period100Mbit
period100Mbit
T
Tolerance
period10Mbit
Symbol
T
Symbol
T
SLEW RATE
CLKHIGH
T
CLKLOW
duty
Clock period for SMII_CLK reference
clock when operating in SMII or
Source Synchronous mode of
operation
Clock period for SMII_TXCLK and
SMII_RXCLK clock when operating
in Source Synchronous SMII mode
of operation
Clock period for Tx and Rx Ethernet
clocks
Clock period for Tx and Rx Ethernet
clocks
Duty cycle for Tx and Rx Ethernet
clocks
Frequency tolerance requirement
for Tx and Rx Ethernet clocks
Clock period for PCI Clock
PCI Clock high time
PCI Clock low time
Slew Rate requirements for
PCI Clock
O s c illa to r
®
IXP46X Product Line of Network Processors
Parameter
Parameter
Intel
®
IXP45X and Intel
Min.
30
11
11
1
O S C _ IN
O S C _ O U T
In te l® IX P 4 5 X / IX P 4 6 X
N e tw o rk P ro c e s s o rs
33 MHZ
Min.
35
Max.
4
®
IXP46X Product Line of Network Processors
+/- 50
Nom.
400
Min.
40
50
1.5
15
8
8
6
6
66 MHZ
+/- 100
Max.
Max.
400
40
65
4
8
8
Units
V/ns
Units
ppm
ns
ns
ns
ns
ns
ns
ns
%
Datasheet
Notes
Notes
115