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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