AM79C978AVCW datasheet(28/256 Pages) AMD

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Am79C978A

DVDDD

10BASE-T PDX Block Power

+3.3 V 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

+3.3 V 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

+3.3 V 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

Ground

These pins are the ground connection for the ana-

log section within the Physical Data Transceiver

(PDX) block.

DVSSD

10BASE-T PDX Digital Ground

Ground

This pin is the ground connection for the digital logic

within the PDX block.

VDDCO

Crystal

+3.3 V Power

This pin supplies power to the crystal circuit.

VDDHR

HomePNA Digital Power

+3.3 V 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

Ground

This pin is the ground connection for the analog section

within the HomePNA block.

DVDDA_HR

HomePNA Analog Power

+3.3 V 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.

AM79C978AVCW Datasheet(PDF) 28 Page - Advanced Micro Devices

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