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| 型号： | 78Q2120-64 |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 10/100BASE-TX Ethernet Transceiver |
| 中文描述： | 10/100BASE-TX以太网收发器 |
| 文件页数： | 1/33页 |
| 文件大小： | 200K |
| 代理商： | 78Q2120-64 |
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78Q2120
10/100BASE-TX
Ethernet Transceiver
April 2000
DESCRIPTION
The 78Q2120 is a 10BASE-T/100BASE-TX Fast
Ethernet transceiver. It includes integrated MII,
ENDECs, scrambler/descrambler, dual-speed clock
recovery,
and
full-featured
functions. The transmitter includes an on-chip pulse-
shaper and a low-power line driver. The receiver has
an adaptive equalizer and a baseline restoration
circuit required for accurate clock and data recovery.
The transceiver interfaces to Category-5 unshielded
twisted pair (Cat-5 UTP) cabling, and is connected to
the line media via 1:1 isolation transformers. No
external filter is required. Interface to the MAC is
accomplished through an IEEE-802.3 compliant
media independent interface (MII). The product is
fabricated
in
a
BiCMOS
performance and low power operation, and can
operate from a single 3.3 V or 5 V supply.
auto-negotiation
process
for
high
FEATURES
10BASE-T/100BASE-TX IEEE-802.3 compliant TX
and RX functions requiring a dual 1:1 isolation
transformer interface to the line
Integrated MII, 10BASE-T/100BASE-TX ENDEC,
100BASE-TX scrambler/descrambler, and full-
featured auto-negotiation function
Full duplex operation capable
PCS Bypass supports 5-bit symbol interface
Dual speed clock recovery
Automatic polarity correction during auto-
negotiation and 10BASE-T signal reception
Power-saving and power-down modes including
transmitter disable
BiCMOS technology, operates with a single 3.3V or
5V supply
LED indicators: LINK,TX,RX,COL,100,10,FDX
User programmable Interrupt pin
General Purpose I/O Interface (80-pin package
only)
64 and 80-Lead TQFP (JEDEC LQFP),
64-Pin QFP packages
BLOCK DIAGRAM
MII Serial
Management
& Control
Transmit
Adaptive EQ,
Baseline Wander Corrector,
MLT3 Decoder,
NRZI/NRZ
4B/5B Encoder,
Scrambler,
Parallel/Serial
MII
Registers
&
Interface
Logic
Parallel/Serial,
Manchester Encoder
Manchester Decoder,
Serial/Parallel
Serial/Parallel,
Descrambler,
5B/4B Decoder
NRZ/NRZI,
MTL3 Encoder
Pulse Shaper
& Filter
TX Clock
Generator
Carrier Sense,
Collision Detect
Auto
Negotiation
Clock
Recovery
Clock
Reference
UTP
Drivers
UTP
Receiver
LEDs
Vcc
Ground
RXIP
RXIN
TXOP
TXON
LINK
RX
COL
100BT
10BT
FDX
100M
100M
10M
10M
Receive
CKIN
相关PDF资料 |
PDF描述 |
|---|---|
| 78Q2120-64CG | 10/100BASE-TX Ethernet Transceiver |
| 78Q2120-64CGT | 10/100BASE-TX Ethernet Transceiver |
| 78Q2120-64T | 10/100BASE-TX Ethernet Transceiver |
| 78Q2120-CGT | 10/100BASE-TX Ethernet Transceiver |
| 78Q8392L | Low Power Ethernet Coaxial Transceiver |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 78Q2120-64CG | 制造商:未知厂家 制造商全称:未知厂家 功能描述:10/100BASE-TX Ethernet Transceiver |
| 78Q2120-64CGT | 制造商:未知厂家 制造商全称:未知厂家 功能描述:10/100BASE-TX Ethernet Transceiver |
| 78Q2120-64T | 制造商:未知厂家 制造商全称:未知厂家 功能描述:10/100BASE-TX Ethernet Transceiver |
| 78Q2120C | 制造商:TDK 制造商全称:TDK Electronics 功能描述:10/100BASE - TX Transceiver |
| 78Q2120C09-64CGT | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:10/100BASE-TX Transceiver |
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