RPIXP2800BB Intel, RPIXP2800BB Datasheet - Page 50

• Manufacturer Part Number: RPIXP2800BB
• Manufacturer: Intel

Specifications of RPIXP2800BB

• 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

IXP28XX Network Processor
RDRAM
3.7
Table 13.
1.
50
RDR0_CMD
RDR0_DQB[8]
RDR0_DQB[5]
RDR0_RQ[3]
RDR0_DQB[2]
RDR0_RQ[0]
RDR0_DQB[6]
RDR0_RQ[5]
RDR0_SIO
RDR0_DQB[3]
RDR0_PCLKM
RDR0_SCK
RDR0_DQB[1]
RDR0_RQ[2]
RDR0_RQ[6]
RDR0_SCLKN
RDR0_DQB[7]
RDR0_CTM
RDR0_CTMN
RDR0_DQA[2]
RDR0_DQA[5]
RDR0_DQB[4]
RDR0_CFM
RDR0_CFMN
RDR0_DQB[0]
RDR0_DQA[6]
Signals in boldface type indicate the start of a logical grouping.
Signal
Note: If the flight delay of the target PCB is not 180 ps/in then the ratio, (154/180), must be modified
Package Trace Lengths for RDRAM Signals
Table 13
given logical grouping.
The flight time on the package substrate is 154ps/in which differs from the flight delay of standard
FR4, typical 180ps/in. As a result the package routing lengths in
compensate for the difference in flight delay between the package and the PCB. For example
RDR0_CMD has a package length of 0.697 in, and the target PCB has a flight delay of 180ps/in. In
order to adjust the package length to match the PCB flight delay this length must be multiplied by
the ratio of 154/180 or the difference between the package and PCB flight delays. Therefore the
trace package routing length that must be accounted for on the PCB is 0.697*(154/180) or 0.596 in.
accordingly, i.e., the denominator would be changed to reflect the actual flight delay.
Package Trace Lengths for RDRAM Signals (Sheet 1 of 2)
17.709
17.39
17.071
16.938
16.78
16.517
15.93
15.727
15.466
15.411
14.94
14.294
13.979
13.743
13.651
13.646
13.607
13.321
13.32
13.006
12.952
12.898
12.636
12.636
12.49
11.797
Metric
Units
(mm)
provides package trace lengths for RDRAM signals, listed by decreasing lengths in a
English
0.697
0.685
0.672
0.667
0.661
0.650
0.627
0.619
0.609
0.607
0.588
0.563
0.550
0.541
0.537
0.537
0.536
0.524
0.524
0.512
0.510
0.508
0.497
0.497
0.492
0.464
Units
(in)
RDR1_CTM
RDR1_CTMN
RDR1_DQA[2]
RDR1_CMD
RDR1_DQA[6]
RDR1_DQA[0]
RDR1_DQB[8]
RDR1_DQB[7]
RDR1_RQ[5]
RDR1_DQA[8]
RDR1_DQB[4]
RDR1_SCLKN
RDR1_RQ[0]
RDR1_DQA[4]
RDR1_CFMN
RDR1_CFM
RDR1_DQA[1]
RDR1_RQ[1]
RDR1_DQB[5]
RDR1_RQ[3]
RDR1_SCK
RDR1_DQB[2]
RDR1_DQB[1]
RDR1_PCLKM
RDR1_DQA[5]
RDR1_DQA[7]
1
Signal
12.634
12.634
12.549
12.436
11.982
11.567
11.316
11.167
10.884
10.782
10.741
10.609
10.391
9.992
9.67
9.668
9.603
9.432
9.223
8.712
8.639
8.627
8.481
8.465
8.443
8.292
Metric
Units
(mm)
English
0.497
0.497
0.494
0.490
0.472
0.455
0.446
0.440
0.429
0.424
0.423
0.418
0.409
0.393
0.381
0.381
0.378
0.371
0.363
0.343
0.340
0.340
0.334
0.333
0.332
0.326
Units
(in)
RDR2_CFMN
RDR2_RQ[7]
RDR2_DQB[4]
RDR2_SIO
RDR2_DQA[3]
RDR2_DQA[0]
RDR2_DQA[8]
RDR2_CTM
RDR2_CTMN
RDR2_DQA[6]
RDR2_DQA[4]
RDR2_DQA[1]
RDR2_RQ[4]
RDR2_DQA[5]
RDR2_RQ[0]
RDR2_DQA[7]
RDR2_DQA[2]
RDR2_CFM
RDR2_RQ[1]
RDR2_RQ[5]
RDR2_RQ[2]
RDR2_DQB[1]
RDR2_DQB[7]
RDR2_DQB[3]
RDR2_RQ[6]
RDR2_DQB[8]
Table 13
Signal
Hardware Design Guide
must be adjusted to
16.105
14.707
19.161
18.843
18.573
18.264
18.264
17.226
16.687
16.358
16.087
16.028
15.997
15.843
15.645
15.645
15.448
15.271
14.637
13.402
13.239
13.103
12.978
12.902
12.633
12.463
Metric
Units
(mm)
0.634
0.608
0.579
English
0.754
0.742
0.731
0.719
0.719
0.678
0.657
0.644
0.633
0.631
0.630
0.624
0.616
0.616
0.601
0.576
0.528
0.521
0.516
0.511
0.508
0.497
0.491
Units
(in)