Intel 41210 manual PCI Analog Voltage Filters, PCI Express Analog Voltage Filter

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 -01

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