RPIXP2800BC Intel, RPIXP2800BC Datasheet - Page 72
RPIXP2800BC
Manufacturer Part Number
RPIXP2800BC
Description
Manufacturer
Intel
Datasheet
1.RPIXP2800BC.pdf
(154 pages)
Specifications of RPIXP2800BC
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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IXP28XX Network Processor
QDR SRAM
Figure 34.
Table 25.
72
QDR K and K# Routing Topology
Table 25
QDR K and K# Signal Group Routing Guidelines
1.
Figure 35
Signal Group
Topology
Reference Plane
Characteristic Trace Impedance
RTT
Nominal Trace Width
Nominal Trace Separation
Group spacing
Trace length P
Trace length B
Maximum via count per signal
Length tuning method
P refers to the package length.
K-Clock Signals K, K#
provides routing guidelines for the QDR K and K# signal groups.
IXP2800 QDR Driver
illustrates routing for QDR K and K# signal trace width/spacing.
1
K, K# Clks
Parameter
+A to SRAMs
Intel
®
R
A
TT
= 50
V
K, K#
Point-to-Point
Ground
50 Ω ±10%
50 Ω ±1%
5 mils
20 mils
Isolation from all other signals is 20 - 25 mils
Trace length from ball to ball should be within 25 mils for all K,
K# nets.
As short as possible.
Maximum = 1.0 inches
As short as possible.
Maximum = 6 vias
K and K# signals matched within ±25 mils to (Data-Out + 0.5
in.), (Address + 0.9 in.), and (Control + 0.5 in.) signals, where
length includes package length compensation (P+A)
TT
= 0.75V
Routing Guideline
Hardware Design Guide
Top SRAM
ottom SRAM
3956-01
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