ppc440grx Applied Micro Circuits Corporation (AMCC), ppc440grx Datasheet - Page 68
ppc440grx
Manufacturer Part Number
ppc440grx
Description
Powerpc 440grx Embedded Processor
Manufacturer
Applied Micro Circuits Corporation (AMCC)
Datasheet
1.PPC440GRX.pdf
(90 pages)
- Current page: 68 of 90
- Download datasheet (2Mb)
440GRx – PPC440GRx Embedded Processor
Power Sequencing
Startup sequencing of the power supply voltages is not required. However, a power-down cycle must complete
(OV
Analog Voltage Filter
The analog voltages (AVdd and EAVdd) used for the on-chip PLLs can be derived from the logic voltage, but must be filtered
before entering the PPC440GRx. A Separate filter, as shown below, is recommended for each voltage.
68
Table 14. Typical DC Power Supply Requirements Using DDR2 Memory
Table 15. Typical DC Power Supply Requirements Using DDR1 Memory
• The filter should keep the analog voltage to analog ground compression/expansion due to noise less than +/-
• Keep all wire lengths as short as possible.
• Analog grounds must be brought out and connected to the digital ground plane at the filter capacitor.
• The impedance of the ferrite bead should be much greater than that of the capacitor at frequencies where noise is
Notes:
1. Typical power is estimated and is based on a nominal voltage of V
Notes:
1. Typical power is estimated and is based on a nominal voltage of V
Frequency (MHz)
Frequency (MHz)
DD
50 mV.
expected.
that exercises each functiion with representative traffic.
that exercises each functiion with representative traffic.
V
DD
and V
400
533
667
400
533
667
DD
are below +0.4V) before a new power-up cycle is started.
L
(V
(V
DD
DD
+1.5V Supply
+1.5V Supply
+AV
+AV
GND
1.36
1.57
1.91
1.44
1.63
1.95
DD
DD
C
+EAV
+EAV
DD
DD
)
)
AGND, EAGND
AV
+1.8V Supply
+1.8V Supply
DD,
(SOV
(SOV
0.35
0.37
036
EAV
na
na
na
DD
DD
DD
)
)
DD
DD
(SOV
+2.5V Supply
+2.5V Supply
L – SMT ferrite bead chip, Murata BLM21PG600SN1
C – 0.1
= +1.5V, T
= +1.5V, T
(EOV
DD
0.28
0.28
0.28
1.33
1.35
1.37
+ EOV
μ
DD
F ceramic
)
C
C
= 100°C, while running Linux and a test application
DD
= 100°C, while running Linux and a test application
)
+3.3V Supply
+3.3V Supply
Preliminary Data Sheet
(OV
(OV
0.2
0.2
0.2
0.2
0.2
0.2
DD
DD
Revision 1.11 – July 22, 2008
)
)
Total
Total
2.19
2.41
2.76
2.97
3.18
3.52
AMCC Proprietary
Unit
Unit
W
W
W
W
W
W
Notes
Notes
1
1
1
1
1
1
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