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ML4658CP 10BASE-T Transceiver
型号:   ML4658CP
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描述:   10BASE-T Transceiver
文件大小 :   233 K    17 页
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品牌   MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
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November 1998
ML4658
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 an internal 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
an AUI cable.
The ML4658 requires a minimal number of external
components, and is compliant to the IEEE 802.3 10BASE-T
standard. The differential current driven transmitter offers
superior performance because of its highly symetrical
switching. This results in low 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 detection status pin, which can drive
an LED, is provided for receive data, and the ML4658
offers automatic polarity correction.
FEATURES
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Complete implementation of IEEE 802.3 10BASE-T
Medium Attachment Unit (MAU)
Incorporates an AU interface for use in an external
MAU or internal MAU
Single 5V supply ±10%
No crystal or clock input
Current Driven Output for low RFI noise and low jitter
Capable of driving 100Ω unshielded twisted pair cable
or 150Ω shielded twisted pair cable
Polarity detect status pin capable of driving an LED
Automatic Polarity Correction
On-chip Jabber logic, Link Test, and SQE test with
enable/disable option
Provides six network status LED ouput pins
BLOCK DIAGRAM
5V
RTSET
SQEN/LTD/JABD
Tx+
Tx–
AUI
RECEIVER
TRANSMIT
SQUELCH
LINK PULSE
TxTP+
PRE-EQUALIZED
TRANSMIT DRIVER
TxTP–
TxCAP0
JABBER
SQE
COL+
COL–
Rx+
Rx–
AUI
DRIVER
LOOPBACK
MUX
AUI
DRIVER
10MHz GATED
OSCILLATOR
Tx
Rx
LINK TEST
RECEIVE LOGIC
AUTOMATIC
POLARITY
CORRECTION
BIAS
RECEIVE
SQUELCH
LINE
RECEIVER
RxTP+
RxTP–
TxCAP1
LED DRIVERS
GND
VCC
(
5V)
RRSET
5V
CLSN
JAB
RCV
XMT
LTF
POLRD
1
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