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| 型號： | HOME |
| 英文描述： | Home PHY Single-Chip 1/10Mbps Home Networking PHY? - (PDF) |
| 中文描述： | 首頁P(yáng)HY的單芯片1/10Mbps家庭網(wǎng)絡(luò)物理層？ - （PDF格式） |
| 文件頁數(shù)： | 1/90頁 |
| 文件大?。?/td> | 743K |
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PRELIMINARY
Publication#
22304
Issue Date:
July 2000
Rev:
C
Amendment/
0
Refer to AMD’s Website (www.amd.com) for the latest information.
Am79C901A
HomePHY
Single-Chip 1/10 Mbps Home Networking PHY
DISTINCTIVE CHARACTERISTICS
Fully integrated 1 Mbps HomePNA Physical
Layer (PHY) as defined by Home Phoneline
Networking Alliance (HomePNA)
specification 1.1
—
Optimized for home networking applications
over existing telephone wire
—
Media Independent Interface (MII)-compatible
for connecting external Media Access
Controller (MAC)
—
In-band control features:
Adjustable power and speed levels
32 bits of reserved in-band messaging piggy-
backed on Ethernet packet
—
Register programmable features:
Power control
Speed control
Performance registers
Optional control of Squelch algorithm
Major frame timing parameters programma-
ble: ISBI, AID ISBI, pulse width, inter-symbol
time
—
any1Home
link detection:
Indicates to the MAC that a valid home net-
working node has been detected
Detects a network failure and allows the
upper layer protocol to take corrective action
Fully integrated 10 Mbps Ethernet transceiver
—
Comprehensive Auto-Negotiation
implementation
—
IEEE 802.3u-compliant MII
—
Full-duplex operation supported on the MII
port with independent Transmit (TX) and
Receive (RX) channels
—
Optimized for 10BASE-T applications
Compliant with HomePNA specification 1.1
General Purpose Serial Interface (GPSI)/Serial
Peripheral Interface (SPI)
Extensive programmable internal/external
loopback capabilities
Extensive LED status support
IEEE 1149.1-compliant JTAG Boundary Scan
test access port interface
Very low power consumption
+3.3 V power supply along with 5 V tolerant I/Os
enable broad system compatibility
—
XTAL1 supports 3.3 V I/O only
—
XTAL2 supports 1.0 V I/O only
Available in 68-pin PLCC and 80-pin TQFP
packages
Industrial Temperature Support (-40
o
C to +85
o
C)
GENERAL DESCRIPTION
The Am79C901A HomePHY is a single-chip device
that contains both a physical layer (PHY) for 1 Mbps
data networking over existing residential telephone
wiring based on the specification published by
HomePNA and a physical layer for supporting the
IEEE 802.3 standard for 10BASE-T. The HomePHY
is targeted at embedded applications and has both
GPSI and MII-compatible interfaces.
The integrated HomePNA transceiver is a physical
layer device that enables data networking at speeds
up to 1 Mbps over existing residential phone wiring
regardless of topology and without disrupting
telephone (POTS) service.
The integrated Ethernet transceiver is a physical
layer device supporting the IEEE 802.3 standard for
10BASE-T. It provides all of the PHY layer functions
required to support 10 Mbps data transfer speeds.
A compliant IEEE 1149.1 JTAG test interface for
board level testing is provided. The Am79C901A
PHY also provides on-chip LED drivers for collision,
link integrity, speed, activity, and power output.
The Am79C901A PHY is fabricated in an advanced
low power 3.3 V CMOS process to provide low
operating current for power sensitive applications.
The Am79C901A PHY is available in the
commercial temperature range (0oC to +70oC) in
68-pin PLCC and 80-pin TQFP packages. The
Am79C901A also supports the industrial
temperature range (-40oC to +85oC) in the 80-pin
TQFP package. The industrial temperature range is
well suited to environments with enclosures with
restricted air flow or outdoor equipment.
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