AM79C978A AMD [Advanced Micro Devices], AM79C978A Datasheet - Page 28
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AM79C978A
Manufacturer Part Number
AM79C978A
Description
Single-Chip 1/10 Mbps PCI Home Networking Controller
Manufacturer
AMD [Advanced Micro Devices]
Datasheet
1.AM79C978A.pdf
(256 pages)
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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 ±5% 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 ±5% source.
These pins require careful decoupling to ensure proper
device performance.
DVDDA
Analog PLL Power
This pin supplies power to the IREF current refer-
ence circuit and the 10BASE-T analog PLL. They
must be connected to a +3.3 V ±5% source. These
pins require careful decoupling to ensure proper
device performance.
DVSSX, DVSSA
10BASE-T PDX Analog Ground
These pins are the ground connection for the ana-
log section within the Physical Data Transceiver
(PDX) block.
28
+3.3 V Power
+3.3 V Power
+3.3 V Power
Ground
Am79C978A
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 ±5%
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
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