Intel® IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
5.0
Electrical Specifications
5.1
Absolute Maximum Ratings
Parameter
Maximum Rating
Ambient Air Temperature (Extended)
Ambient Air Temperature (Commercial)
Supply Voltage Core
-40º C to 85º C
0º C to 70º C
-0.3 V to 2.1V
-0.3 V to 3.6V
-0.3 V to 2.1V
-0.3 V to 3.6V
-0.3 V to 2.1V
-0.3 V to 2.1V
-0.3 V to 3.6V
-55o C to 125o C
Supply Voltage I/O
Supply Voltage Oscillator (VCCOSC
)
Supply Voltage Oscillator (VCCOSCP
)
Supply Voltage PLL (VCCPLL1
Supply Voltage PLL (VCCPLL2
Voltage On Any I/O Ball
Storage Temperature
)
)
Warning:
Stressing the device beyond the “absolute maximum ratings” may cause permanent damage. These
are stress ratings only. Operation beyond the “operating conditions” is not recommended and
extended exposure beyond the “operating conditions” may affect device reliability.
5.2
VCCPLL1, VCCPLL2, VCCOSCP, VCCOSC Pin Requirements
To reduce voltage-supply noise on the analog sections of the Intel® IXP42X Product Line of
Network Processors and IXC1100 Control Plane Processor, the phase-lock loop circuits (V
,
CCPLL1
V
) and oscillator circuit (V
, V ) require isolated voltage supplies.
CCPLL2
CCOSCP CCOSC
The filter circuits for each supply are shown in the following sections.
5.2.1
V
Requirement
CCPLL1
A parallel combination of a 10-nF capacitor — for bypass — and a 200-nF capacitor — for a first-
order filter with a cut-off frequency below 30 MHz — must be connected to the V
Intel® IXP42X product line and IXC1100 control plane processors.
pin of the
CCPLL1
The ground of both capacitors should be connected to the nearest V supply pin. Both capacitors
SS
should be located less than 0.5 inch away from the V
pin and the associated V pin. In
CCPLL1
SS
order to achieve the 200-nF capacitance, a parallel combination of two 100-nF capacitors may be
used as long as the capacitors are placed directly beside each other.
March 2005
82
Datasheet
Document Number: 252479, Revision: 005
INTEL [ INTEL ]
