gwixp465bad ETC-unknow, gwixp465bad Datasheet - Page 104

• Manufacturer Part Number: gwixp465bad
• Description: Network Proc 1.3v/1.4v/2.5v/3.3v 400mhz 544-pin Bga
• Manufacturer: ETC-unknow

5.2
5.2.1
Figure 9.
5.2.2
Intel
Datasheet
104
®
IXP45X and Intel
V
Requirements
V
associated V
of two 100-nF capacitors may be used as long as the capacitors are placed directly
beside each other.
V
V
associated V
of two 100-nF capacitors may be used as long as the capacitors are placed directly
beside each other.
To reduce voltage-supply noise on the analog sections of the IXP45X/IXP46X network
processors, the phase-lock loop circuits (V
(OSC_VCC, OSC_VCCP) require isolated voltage supplies.
The filter circuits for each supply are shown in the following sections.
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
The ground of both capacitors should be connected to the nearest V
capacitors should be located less than 0.5 inch away from the V
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
The ground of both capacitors should be connected to the nearest V
capacitors should be located less than 0.5 inch away from the V
CCPLL1
CCPLL2
CCPLL1
CCPLL1
CCPLL2
CCPLL1
®
IXP46X Product Line of Network Processors
1 0 n F
pin of the IXP45X/IXP46X network processors.
pin of the IXP45X/IXP46X network processors.
V c c
Power Filtering Diagram
Requirement
Requirement
, V
SS
SS
V
CCPLL2
S S
pin. In order to achieve the 200-nF capacitance, a parallel combination
pin. In order to achieve the 200-nF capacitance, a parallel combination
Intel
®
IXP45X and Intel
1 0 0 n F
, V
CCPLL3
, OSC_VCCP, OSC_VCC Pin
®
IXP46X Product Line of Network Processors—Datasheet
1 0 0 n F
CCPLL1
V
,
C C P L L 1
V
CCPLL2
V
S S
,
V
I X P 4 5 X / I X P 4 6 X
CCPLL3
Document Number:
P r o c e s s o r s
N e t w o r k
CCPLL1
CCPLL2
) and oscillator circuit
I n t e l
SS
SS
supply pin. Both
supply pin. Both
pin and the
pin and the
®
306261-004US
August 2006