ML4658CQ
10BASE-T Transceiver
GENERAL DESCRIPTION
The ML4658 10BASE-T Transceiver is a single chip cable
line driver/receiver that provides all of the functionality
required to implement both ainternal and external IEEE
802.3 10BASE-T MAU. This part offers a standard IEEE
802.3 AU interface that allows it to directly connect to
industry standard manchester encoder/decoder chips or to
aAUI cable.
The ML4658 requires a minimal number of external
components, and is compliant to the IEEE 802.3 10BASE-T
standard. The differential current drivetransmitter offers
superior performance because of its highly symetrical
switching. This results ilow RFI noise and low jitter.
The Transceiver easily interfaces to 100Ω unshielded
twisted pair cable, 150Ω shielded twisted pair cable, or a
range of other characteristic impedances by simply
changing one external resistor. Jabber, Link Test, and SQE
Test are fully integrated onto the chip with enable/disable
options. A polarity detectiostatus pin, which cadrive
aLED, is provided for receive data, and the ML4658
offers automatic polarity correction.
FEATURES
Complete implementatioof IEEE 802.3 10BASE-T
Medium Attachment Unit (MAU)
Incorporates aAU interface for use iaexternal
MAU or internal MAU
Single 5V supply ±10%
No crystal or clock input
Current DriveOutput for low RFI noise and low jitter
Capable of driving 100Ω unshielded twisted pair cable
or 150Ω shielded twisted pair cable
Polarity detect status picapable of driving aLED
Automatic Polarity Correction
On-chip Jabber logic, Link Test, and SQE test with
enable/disable option
Provides six network status LED ouput pins
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