Справочник Пользователя для Intel 41110
Intel® 41110 Serial to Parallel PCI Bridge Design Guide
45
Circuit Implementations
Circuit Implementations
10
This chapter describes 41110 circuit implementations.
10.1
41110 Analog Voltage Filters
The 41110 requires several external analog voltage filter circuits to be placed on the system board,
three for the PCI interface, one for the PCI Express interface, and one for the bandgap voltage. The
41110 lists the recommended filter values for these filter circuits -- any one of the filter circuits can
use any one of the four R, L and C combinations shown in
three for the PCI interface, one for the PCI Express interface, and one for the bandgap voltage. The
41110 lists the recommended filter values for these filter circuits -- any one of the filter circuits can
use any one of the four R, L and C combinations shown in
, except that configuration
number 4 cannot be used for the PCI Express analog voltage filter.
Table 16. Recommended R, L and C Values for 41110 Analog Filter Circuits
Additional Notes:
•
L (Inductor)
— L must be magnetically shielded
— ESR: max < 0.4
Ω
— rated at 45mA (or 30mA for bandgap circuit only)
•
C (Capacitor)
— ESR: max < 0.5
Ω
— ESL < 3.0nH
•
R (Resistor)
— 1/16W
Config
R
L
C
1
0.5
Ω ±1%
1/16W
4.7uH ±25%
PCI, PCI-E: 45mA
Bandgap: 30mA
33uF ±20%
6.3V
2
0.5
Ω ±1%
1/16W
4.7uH ±20
PCI, PCI-E: 45mA
Bandgap: 30mA%
22uF ±20%
6.3V
3
0.5
Ω ±1%
1/16W
4.7uH ±20%
PCI, PCI-E: 45mA
Bandgap: 30mA
2x10uF ±20%
6.3V
4
a
a.
Configuration number 4 cannot be used for the PCI Express analog voltage filter.
1.0
Ω ±1%
1/16W
4.7uH ±20%
PCI: 45mA
Bandgap: 30mA
10uF ±20%
6.3V