Intel 31244 PCI-X User Manual
37
Printed Circuit Board (PCB) Methodology
Printed Circuit Board (PCB)
Methodology
Methodology
6
This section provides a recommended guidelines for PCB stackup. A considerable part of the SI
analysis, is to identify and recommend the backplane stackup recommendations. This guideline
section is separated into two recommendations:
analysis, is to identify and recommend the backplane stackup recommendations. This guideline
section is separated into two recommendations:
•
GD31244 in normal mode, refer to
.
•
GD31244 in extended voltage mode for backplane designs, refer to
The specified impedance range for SATA is differential 100 + 15% ohms for all components of the
SATA path:
SATA path:
The assumption is that GD31244 is implemented with normal 60 ohm guidelines, with the primary
application being standard desktop PC.
application being standard desktop PC.
•
backplane
•
cables
•
motherboard
•
connectors