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AM79C901AJI Datasheet(PDF) 1 Page - Advanced Micro Devices |
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AM79C901AJI Datasheet(HTML) 1 Page - Advanced Micro Devices |
1 / 90 page PRELIMINARY Publication# 22304 Rev: C Amendment/0 Issue Date: July 2000 Refer to AMD’s Website (www.amd.com) for the latest information. Am79C901A HomePHY™ Single-Chip 1/10 Mbps Home Networking PHY DISTINCTIVE CHARACTERISTICS n 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 n 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 n Compliant with HomePNA specification 1.1 n General Purpose Serial Interface (GPSI)/Serial Peripheral Interface (SPI) n Extensive programmable internal/external loopback capabilities n Extensive LED status support n IEEE 1149.1-compliant JTAG Boundary Scan test access port interface n Very low power consumption n +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 n Available in 68-pin PLCC and 80-pin TQFP packages n Industrial Temperature Support (-40ºC to +85ºC) 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 wir ing 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 regardles s of to po logy and without disr upting 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. T he A m 79C901A P H Y is a v ai lab l e in t h e commercial temperature range (0ºC to +70ºC) in 68-pin PLCC and 80-pin TQFP packages. The A m 79C901A also s u p por t s t he i ndust r ial 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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