Datasheet

DP83848YB PHYTER® - Extreme Temperature Single Port 10/100 Mb/s Ethernet Physical Layer Transceiver
© 2008 National Semiconductor Corporation www.national.com
1
May 2008
DP83848YB PHYTER® - Extreme Temperature
Single Port 10/100 Mb/s Ethernet Physical Layer Transceiver
General Description
The number of applications requiring ethernet connec-
tivity continues to increase. Along with this increased
market demand is a change in application require-
ments. The DP83848YB was designed to allow ether-
net connectivity in the harshest environments. Our
device meets IEEE 802.3u standards over an
EXTREME temperature range of -40°C to 125
°C. This
device is ideally suited for harsh environments for
example wireless remote base stations, automo-
tive/transportation and industrial control applications.
The DP83848YB is a highly reliable, feature rich robust
device which includes enhanced ESD protection, MII
and RMII for maximum flexibility in MPU selection all in
a 48 pin LQFP package.
With the DP83848YB NATIONAL continues to build on
its Ethernet expertise and leadership position by pro-
viding the flexibility allowing for ease of implementation
by the end user.
The DP83848YB features integrated sublayers to sup-
port both 10BASE-T and 100BASE-TX Ethernet proto-
cols, which ensures compatibility and interoperability
with all other standards based Ethernet solutions.
Applications
• Automotive/Transportation
• Industrial Controls and Factory Automation
• General Embedded Applications
System Diagram
PHYTER
®
is a registered trademark of National Semiconductor.
Status
10BASE-T
or
100BASE-TX
25 MHz
Magnetics
RJ-45
Clock
LEDs
DP83848VYB
10/100 MB/S
Media Access Controller
Source
Typical Application
MII/RMII/SNI
MPU/CPU
Features
• Extreme Temperature from -40 °C to 125 °C
• Low-power 3.3V, 0.18µm CMOS technology
• Low power consumption < 270mW Typical
• 3.3V MAC Interface
• Auto-MDIX for 10/100 Mb/s
• Energy Detection Mode
• 25 MHz clock out
• SNI Interface (configurable)
• RMII Rev. 1.2 Interface (configurable)
• MII Serial Management Interface (MDC and MDIO)
• IEEE 802.3u MII
• IEEE 802.3u Auto-Negotiation and Parallel Detection
• IEEE 802.3u ENDEC, 10BASE-T transceivers and filters
• IEEE 802.3u PCS, 100BASE-TX transceivers and filters
• IEEE 1149.1 JTAG
• Integrated ANSI X3.263 compliant TP-PMD physical sub-
layer with adaptive equalization and Baseline Wander com-
pensation
• Error-free Operation up to 150 meters
• Programmable LED support Link, 10 /100 Mb/s Mode, Activ-
ity, and Collision Detect
• Single register access for complete PHY status
• 10/100 Mb/s packet BIST (Built in Self Test)
• Lead free 48-pin LQFP package (7mm) x (7mm)