ST STE800P User Manual

查询STE800P供应商
10/100 BASE-TX/FX 8 PORT TRANSCEIVER
1.0 DESCRIPTION
The STE800P is a high performance Octal Fast Ethernet physical layer interface for 10BASE-T and 100BASE-TX/ FX applications. It was designed with advanced CMOS technology to provide a RMII/SMII for easy attachment to 10/100 Media Access Controllers (MAC) and a physical me­dia interface for 100BASE-TX / FX of IEEE802.3u and 10BASE-T of IEEE802.3. The STE800P supports both half-duplex and full-du­plex operation, at 10 and 100 Mbps operation. Its op­erating mode can be set using auto-negotiation, parallel detection or manual control. It also allows for the support of auto-negotiation functions for speed and duplex detection.
2.0 FEATURE
2.1 Industry standard
• IEEE802.3u 100BASE-TX / FX and IEEE802.3 10BASE-T compliant
STE800P
PRODUCT PREVIEW
PQFP208
ORDERING NUMBER: STE800P
• Support for IEEE802.3x flow control
• IEEE802.3u Auto-Negotiation support
• RMII/SMII interface
• Low power, single supply 3.3V CMOS
• Shared MII management interface up to 25 Mbps
Figure 1. BLOCK DIAGRAM FOR 1 PORT
LEDS
TXD(1:0) TX_ER
TX_EN
MDIC
MDIO
SMII_EN
RXD(1:0) RX_ER
CRS_DV
REFCLK
HW
Config
Pins
RMII / SMII Interface / Controller
HW Config
Power Down
4B/ 5B
10Mb/s
100Mb/s
10Mb/s
NRZ To Manchester Encoder
4B/ 5B
NRZ To Manchester Decoder
Scrambler
Descrambler Code Align
TX Channel100Mb/s
Parallel To Serial
Link Pulse Generator
Auto Negotiation
RX Channel
Serial To Parallel
Link Pulse Detector
NRZ To NRZI Encoder
NRZI To NRZ Decoder
Binary to MLT3 Encoder
LoopbackREGISTERS
Binary To
MLT3 Decoder Cloc k Recov e r y
10 RX Filter Clk Recov er y
10 TX Filter
Adaptive Equ alization
Baseline Wander
SMART
Squelch
TRANS­MITTER 10/100
Clock Generation
RECEIVER
10/100
TXP
TXN
System Clock
RXP
RXN
November 2001
This is preliminary information on a new product now in development. Deta ils are subject to change without notice. REVISION: A06
1/4
STE800P
2.2 Physical Layer
• Integrates the whole Physical layer functions for
• 100BASE-TX full or half duplex Ethern e t on CAT 5 twis ted pair cable
• 100BASE-FX full or half duplex transmission over fiber optic cabling
• 10BASE-T full or half duplex Ethernet on CAT 3, 4 or 5 cable.
• Auto-negotiation(NWAY) function of full/half duplex operation for both 10 and 100 Mbps
• MLT-3 transceiver with DC restoration for Base-line wander compensation
• Transmit wave-shaper, receive filters, and adaptive equalizer
• Loop-back modes for diagnostic
• In Stream Cipher Scrambler/ De-scrambler
• 4B/5B, MLT3, NRZI and Manchester encoding/decoding
• 125 MHz clock generator and timing recovery
• Supports external transmit transformer with turn ratio 1.41 : 1
• Supports external receive transformer with turn ratio 1:1
2.3 LED Display
• Serial LED status pins
• Programmable parallel LED pins
2.4 Miscellaneous
• Standard 208-pin PQFP package pinout
Figure 2. System Diagram of the STE800P Application
OCTAL ETHERNET MAC CONTROLLER
STE800P
8 PORT 10/100MBPS PHY
MAGNETICS
RJ45
MAGNETICS
RJ45
2/4
Port 1
Port 8
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