DP83223 Datasheet, PDF (1/14 Pages) National Semiconductor (TI) – TWISTER High Speed Networking Transceiver Device

April, 1997
DP83223 TWISTER High Speed Networking Transceiver Device
General Description
Features
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 to interface directly with National
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.
s Compatible with ANSI X3.263 TP-PMD draft standard
s Allows use of Type 1 STP and Category 5 UTP cables
s Requires a single +5V supply
s Integrated transmitter and receiver with adaptive equal-
ization circuit
s Isolated TX and RX power supplies for minimum noise
coupling
s Loopback feature for board diagnostics
s Digitally Synthesized transmit signal transition time con-
trol for reduced EMI
s Programmable transmit voltage amplitude
s Suitable for 100BASE-TX Fast Ethernet and Twisted
Pair FDDI applications
System Connection Diagrams
DP83840A
10/100 Ethernet PHY
Scrambled
TX DATA
Scrambled
RX DATA
Signal
Detect
DP83223
Transceiver
PMD
Encoded
TXDATA
PMD
Encoded
RXDATA
Magnetics
SIGDET
DP83257VF or DP83256VF-AP
PLAYER+
TX DATA
Descrambled
Recovered
RXDATA
RX DATA
TXC
Phased
RX CLOCK
Recovered
RXCLOCK
RX DATA
DP83222
Stream Cipher
Scrambled
TX DATA
DP83223
Transceiver
PMD
Encoded
TXDATA
PMD
Encoded
RXDATA
Magnetics
Twisted Pair
Media
100BASE-TX
Twisted Pair
Media
Twisted Pair FDDI
© 1997 National Semiconductor Corporation
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