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參數(shù)資料
| 型號(hào)： | AM79C970 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | PCnetTM-PCI Single-Chip Ethernet Controller for PCI Local Bus |
| 中文描述： | PCnetTM - PCI單芯片以太網(wǎng)控制器的PCI總線 |
| 文件頁(yè)數(shù)： | 153/168頁(yè) |
| 文件大小： | 943K |
| 代理商： | AM79C970 |
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AMD
1-1020
Am79C970
18220C-53
PCnet-PCI
V
DD
plane
V
SS
plane
33 uF to 10 uF
1
to
10
AVDD2
AVSS2
To determine the value for the resistor and capacitor,
the formula is:
R * C
≥
88
Where R is in Ohms and C is in microfarads. Some pos-
sible combinations are given below. To minimize the
voltage drop across the resistor, the R value should not
be more than 10
.
2.7
33
μ
F
4.3
22
μ
F
6.8
15
μ
F
10
10
μ
F
R
C
AVSS2 and AVDD2/AVDD4: These pins provide power
and ground for the AUI and twisted pair receive circuitry.
In addition, as mentioned earlier, AVSS2 and AVDD2
provide power and ground for the phase-lock loop por-
tion of the chip. Except for the filter circuit already men-
tioned, no specific decoupling is necessary on these
pins.
AVDD1: AVDD1 provides power for the control and in-
terface logic in the PLL. Ground for this logic is provided
by digital ground pins. No specific decoupling is neces-
sary on this pin.
Special Note for Adapter Cards: In adapter card de-
signs,
it is important to utilize all available power and
ground pins available on the bus edge connector
. In
addition, the connection from the bus edge connector to
the power or ground plane should be made through
more than one via and with wide traces (15 mils desir-
able) wherever possible. Following these recommenda-
tions results in minimal inductance in the power and
ground paths. By minimizing this inductance, ground
bounce is minimized.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C970A | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product |
| AM79C970AKC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product |
| AM79C970AKC\\W | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Advanced Micro Devices 功能描述: |
| AM79C970AKC\W | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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