dp83223 National Semiconductor Corporation, dp83223 Datasheet
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dp83223
Manufacturer Part Number
dp83223
Description
Dp83223 Twister High Speed Networking Transceiver Device
Manufacturer
National Semiconductor Corporation
Datasheet
1.DP83223.pdf
(14 pages)
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© 1997 National Semiconductor Corporation
DP83223 TWISTER High Speed Networking Transceiver Device
General Description
The DP83223 Twisted Pair Transceiver is an integrated
circuit capable of driving and receiving three-level (MLT-3)
encoded datastreams. The DP83223 Transceiver is
designed
Semiconductor’s Fast Ethernet and FDDI Chip Sets or
similar Physical Layer silicon allowing low cost data links
over copper based media. The DP83223 allows links of up
to 100 meters over Shielded Twisted Pair (Type-1A STP)
and Category-5 datagrade Unshielded Twisted Pair (Cat-5
UTP) or equivalent. The DP83223 is available in a 28 pin
PLCC package and a 32 pin PQFP package.
System Connection Diagrams
10/100 Ethernet PHY
Scrambled
TX DATA
to
Encoded
TXDATA
PMD
100BASE-TX
DP83840A
Transceiver
interface
Magnetics
DP83223
Twisted Pair
Scrambled
Media
RX DATA
Encoded
RXDATA
directly
PMD
Signal
Detect
with
National
SIGDET
1
Features
Compatible with ANSI X3.263 TP-PMD draft standard
Allows use of Type 1 STP and Category 5 UTP cables
Requires a single +5V supply
Integrated transmitter and receiver with adaptive equal-
ization circuit
Isolated TX and RX power supplies for minimum noise
coupling
Loopback feature for board diagnostics
Digitally Synthesized transmit signal transition time con-
trol for reduced EMI
Programmable transmit voltage amplitude
Suitable for 100BASE-TX Fast Ethernet and Twisted
Pair FDDI applications
DP83257VF or DP83256VF-AP
TXC
TX DATA
Encoded
TXDATA
PMD
RX CLOCK
Stream Cipher
Scrambled
TX DATA
Phased
Twisted Pair FDDI
Transceiver
Magnetics
PLAYER+
DP83223
DP83222
Twisted Pair
Descrambled
RX DATA
Media
Encoded
RXDATA
RXCLOCK
Recovered
PMD
Recovered
RXDATA
April, 1997
RX DATA