STPCE1EDBI STMICROELECTRONICS [STMicroelectronics], STPCE1EDBI Datasheet - Page 71

• Manufacturer Part Number: STPCE1EDBI
• Description: X86 Core General Purpose PC Compatible System - on - Chip
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

6.4. PLACE AND ROUTE
6.4.1. GENERAL RECOMMENDATIONS
Some STPC Interfaces run at high speed and
need to be carefully routed or even shielded like:
1) Memory Interface
2) PCI bus
3) 14 MHz oscillator stage
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
RECOMMENDATIONS
ground pad
Figure 6-15. Shielding signals
Release 1.3 - January 29, 2002
All clock signals have to be routed first and
shielded for speeds of 27MHz or higher. The high
speed signals follow the same constraints, as for
the memory and PCI control signals.
The next interfaces to be routed are Memory and
PCI.
All the analog noise-sensitive signals have to be
routed in a separate area and hence can be
routed indepedently.
ground pad
ground ring
shielded signal line
shielded signal lines
DESIGN GUIDELINES
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