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AM79C978

PCnet™- Home Single-Chip 1/10 Mbps PCI Home Networking Controller

Advanced Micro Devices 

PIN DESIGNATIONS (PQL144)

Listed By Group

Pin Name

Pin Function

HomePNA PHY Network Ports

HRTXRXP/N

Receive/Transmit Data

XTAL1

Crystal Input (20 MHz XTAL/60 MHz CLK)

XTAL2

Crystal Output (20 MHz XTAL)

XCLK/XTAL

Oscillator/Crystal Select

10BASE-T Network Ports

TX±

Serial Transmit Data

RX±

Serial Receive Data

IREF

Tied to GND via a 12 kΩ 1% resistor

PHY_RST

Buffered PCI RST signal

MII

TX_CLK

MII Transmit Clock

TXD[3:0]

MII Transmit Data

TX_EN

MII Transmit Enable

RX_CLK

MII Receive Clock

RXD[3:0]

MII Receive Data

RX_ER

MII Receive Error

RX_DV

MII Receive Data Valid

MDC

MII Management Data Clock

MDIO

MII Management Data I/O

CRS

Carrier Sense

COL

Collision

Magic Packet

PME

Power Management Event

PG

Power Good

Host CPU Interface

PCI_CLK

CPU Clock

C/BE[3:0]

Bus Command Byte Enable

AD[31:0]

Address/Data

DEVSEL

Device Select

FRAME

Cycle Frame

GNT

Bus Grant

IDSEL

Initialization Device Select

INTA

Interrupt

IRDY

Initiator Ready

PAR

Parity

PERR

Parity Error

REQ

Bus Request

RST

Reset

SERR

System Error

20

Am79C978

Type Voltage Driver

No. of

Pins

I/O

3.3

NA

2

I

3.3

-

1

O

3.3

XTAL

1

I

3.3

-

1

O

3.3

NA

2

I

3.3

-

2

I

3.3

-

1

O

3.3

OMII1

1

I

3.3

-

1

O

3.3

OMII1

4

O

3.3

OMII1

1

I

3.3

-

1

I

3.3

-

4

I

3.3

-

1

I

3.3

-

1

O

3.3

OMII2

1

I/O

3.3

TSMII

1

I

3.3

-

1

I

3.3

-

1

O

3.3

OD6

1

I

3.3

-

1

I

3.3/5

-

1

I/O

3.3/5

TS3

4

I/O

3.3/5

TS3

32

I/O

3.3/5

STS6

1

I/O

3.3/5

STS6

1

I

3.3/5

-

1

I

3.3/5

-

1

O

3.3/5

OD6

1

I/O

3.3/5

STS6

1

I/O

3.3/5

STS6

1

I/O

3.3/5

STS6

1

O

3.3/5

TS3

1

I

3.3/5

-

1

I/O

3.3/5

OD6

1

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