Circuit Implementations
10.1.1PCI Analog Voltage Filters
The following filter circuit is recommended for the PCI interface. Three separate, identical versions of this circuit should be placed on the system board, one for each VCCAPCI[2:0] pin on the Intel® 41210 Serial to Parallel PCI Bridge.
Figure 23. PCI Analog Voltage Filter Circuit
Board Trace: | Breakout Trace: |
Trace Width > 25 mils | Trace Width > 6 mils |
Trace Spacing < 10 mils | Trace Spacing < 6 mils |
Trace Length < 600 mils | Trace Length < 600 mils |
VCC | Board Route | Breakout |
Traces | Traces | |
| L | VCCAPCI[2:0] |
| R | |
| Intelfi 41210 | |
| C | |
|
| Bridge |
|
| VSS |
B2724
Note: Three of these PCI filter circuits must be placed on the system board, one for each of the VCCAPCI[2:0] pins on the Intel® 41210 Serial to Parallel PCI Bridge.
•Place C as close as possible to package pin.
•R must be placed between VCC15 and L.
•Route VCCPCI[x] and VSS as differential traces.
•VCCPCI[x] and VSS traces must be ground referenced (No VCC15 references).
•Max total board trace length = 1.2”.
•Min trace space to other nets = 30 mils.
10.1.2PCI Express Analog Voltage Filter
Figure 24 shows the PCI Express Analog Voltage Circuit.
50 | Intel® 41210 Serial to Parallel PCI Bridge Design Guide |