RPIXP2800BA Intel, RPIXP2800BA Datasheet - Page 37
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RPIXP2800BA
Manufacturer Part Number
RPIXP2800BA
Description
Manufacturer
Intel
Datasheet
1.RPIXP2800BA.pdf
(154 pages)
Specifications of RPIXP2800BA
Operating Supply Voltage (typ)
1.3/1.5/2.5/3.3V
Operating Supply Voltage (max)
1.575/2.7/3.465V
Operating Supply Voltage (min)
1.235/2.3/3.135V
Mounting
Surface Mount
Operating Temperature (max)
70C
Operating Temperature (min)
0C
Operating Temperature Classification
Commercial
Lead Free Status / Rohs Status
Not Compliant
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Figure 7.
3.2.6
Hardware Design Guide
Note: DRCG 3.3 V can come up if StopB and/or PwrdnB pins are low.
Figure 7
Power-up Sequence
IXP28XX Network Processor Power-Up Considerations
when using NexMod* Memory Modules
The following are additional design considerations for the IXP28XX network processor’s power-
up sequence when using NexMod* modules. Because each channel can have a separate power
source for V
supply for the IXP28XX network processor, is common to all three channels as shown in
the following requirement must be satisfied by the power delivery design:
2. Power up the V
3. Power up the IXP28XX network processor to 1.35 V (V
4. Enable the DRCG clock output.
•
The system designer must ensure that V
— Both V
— V
— V
— Apply 3.3 V after V
— In most cases this can be guaranteed by the power sequence order.
supply.
illustrates the power-up sequence.
REF
CCR
TERM
should be generated through a voltage divider from V
referred power-up sequence:
is connected to V
CCR_IO
and V
CCR_IO
CMOS
and V
DRCG 3.3V can come up if StopB
and/or wrdnB pins are low
to 1.8 V and V
when using the HCD memory modules and V
CCR_IO
TERM
CCR_A
must be raised simultaneously and tied to the same 1.8 V power
, with StopB and PwrdnB pins high.
through an LC filter.
TERM
CCR_IO
to 1.8 V.
and V
TERM
CCR
never differ by more than 1.6 V.
IXP28XX Network Processor
and V
TERM
CCR_A
.
CCR_IO,
).
the RDRAM I/O
Figure
RDRAM
37
8,
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