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參數(shù)資料
| 型號(hào)： | AM79C978 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | Single-Chip 1/10 Mbps PCI Home Networking Controller |
| 中文描述： | 單芯片的1 / 10 Mbps的家庭網(wǎng)絡(luò)控制器的PCI |
| 文件頁(yè)數(shù)： | 32/261頁(yè) |
| 文件大?。?/td> | 3803K |
| 代理商： | AM79C978 |
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32
Am79C978
Table 2.
External Clock/Crystal Select
XTAL1
Crystal Oscillator In
The internal clock generator utilizes either a 20-MHz
crystal that is attached to pins XTAL1 and XTAL2 or a
60-MHz clock source connected to XTAL1. This pin is
not 5 V tolerant, and the 60 MHz clock source must be
from a 3.3 V source.
XTAL2
Crystal Oscillator Out
The internal clock generator utilizesd a 20-MHz crystal
that is attached to pins XTAL1 and XTAL2.
Power Supply
VDDB
I/O Buffer Power (5 Pins)
These pins are the power supply pins that are used by
the input/output buffer drivers. All VDDB pins must be
connected to a +3.3 V supply.
VDD_PCI
PCI I/O Buffer Power (9 Pins)
These pins are the power supply pins that are used by
the PCI input/output buffer drivers (except PME driver).
All VDD_PCI pins must be connected to a +3.3 V sup-
ply.
VSSB
I/O Buffer Ground (15 Pins)
These pins are the ground pins that are used by the
input/output buffer drivers.
VDD
Digital Power (7 Pins)
These pins are the power supply pins that are used by
the internal digital circuitry. All VDD pins must be con-
nected to a +3.3 V supply.
VSS
Digital Ground (7 Pins)
There are seven ground pins that are used by the inter-
nal digital circuitry.
Input
Output
+3.3 V Power
+3.3 V Power
Ground
+3.3 V Power
Ground
DVDDD
10BASE-T PDX Block Power
This pin supplies power to the 10 Mbps Transceiver
block. It must be connected to a +3.3 V ±300 mV
source. This pin requires careful decoupling to ensure
proper device performance.
DVDDRX, DVDDTX
10BASE-T I/O Buffer Power
These pins supply power to the 10BASE-T input/output
buffers. They must be connected to a +3.3 V ±300 mV
source. These pins require careful decoupling to en-
sure proper device performance.
DVDDA
Analog PLL Power
This pin supplies power to the IREF current reference
circuit and the 10BASE-T analog PLL. They must be
connected to a +3.3 V ±300 mV source. These pins re-
quire careful decoupling to ensure proper device per-
formance.
DVSSX, DVSSA
10BASE-T PDX Analog Ground
These pins are the ground connection for the analog
section within the Physical Data Transceiver (PDX)
block.
DVSSD
10BASE-T PDX Digital Ground
This pin is the ground connection for the digital logic
within the PDX block.
VDDCO
Crystal
This pin supplies power to the crystal circuit.
VDDHR
HomePNA Digital Power
These pins are the digital power supply pins that are
used by the internal digital circuitry for the HomePNA
block. They must be connected to a +3.3 V source.
VSSHR
HomePNA Analog Ground
This pin is the ground connection for the analog section
within the HomePNA block.
DVDDA_HR
HomePNA Analog Power
This pin supplies power to the analog section of the
HomePNA block. It must be connected to a +3.3 V
±300 mV source. This pin requires careful decoupling
to ensure proper device performance.
+3.3 V Power
+3.3 V Power
+3.3 V Power
Ground
Ground
+3.3 V Power
+3.3 V Power
Ground
+3.3 V Power
Input Pin
Output
Pin
XCLK/XTAL
Clock Source
XTAL1
XTAL2
0
20-MHz Crystal
XTAL1
Don
’
t Care
1
60-MHz Oscillator/
External CLK
Source
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C978A | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Single-Chip 1/10 Mbps PCI Home Networking Controller |
| AM79C978AKC\\W | 制造商:Advanced Micro Devices 功能描述: |
| AM79C978AKC\W | 制造商:Advanced Micro Devices 功能描述: |
| AM79C978AKCW | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Single-Chip 1/10 Mbps PCI Home Networking Controller |
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