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ML4663CQ
March 1997 ML4663 Single Chip 10BASE-FL Transceiver GENERAL DESCRIPTION FEATURES The ML4663 single-chip 10BASE-FL transceiver integrates both a ML4662 10BASE-FL transceiver with a ML4622 fiber optic data quantizer to implement a highly integrated solution for 10BASE-FL transceivers. The ML4663 offers a standard IEEE 802.3 AU interface that allows it to be directly connected to industry standard manchester encoder/decoder chips or an AUI connector. s The ML4663 provides a highly integrated solution that requires a minimal number of external components, and is compliant to the IEEE 802.3 10BASE-FL standard. The transmitter offers a current drive output that directly drives a fiber optic LED transmitter. The receiver offers a highly stable fiber optic data quantizer capable of accepting input signals as low as 2mVP-P with a 55dB dynamic range. s The transmitter automatically inserts 1MHz signal during idle time and removes this signal on reception. Low Light is continuously monitored for both activity as well as power level. Five LED status indicators monitor error conditions as well as transmissions, receptions and collisions. BLOCK DIAGRAM leas P Tx+ 10 Tx– 11 e See SQEN/JABD 5 L466 M s s s s s s Single chip solution for 10BASE-FL internal or external Medium Attachment Units (MAUs) Incorporates an AU interface Highly stable data quantizer with 55dB input dynamic range Input sensitivity as low as 2mVP-P Current driven fiber optic LED driver for accurate launch power Single +5 volt supply No crystal or clock required Five network status LED outputs r New 8 fo igns Des +5V VCCTx (+5V) RTSET 17 AVCC GND 12 20 27 FIBER OPTIC LED DRIVER AUI RECEIVER 18 TxOUT 15 XMT Tx SQUELCH 1MHz IDLE SIGNAL 16 RCV LED DRIVERS JABBER 1 CLSN 28 JAB 14 LMON BIAS SQE RECEIVE SQUELCH COL+ 2 AUI DRIVER COL– 3 10MHz GATED OSCILLATOR 26 VIN+ AMP 25 VIN– Tx Rx+ 6 LOOPBACK MUX AUI DRIVER Rx– 7 CMP Rx 21 VDC ∫ VREF LINK DETECT 19 GND 9 VCC (+5V) 13 8 RRSET LBDIS 24 AGND 22 VREF 23 VTHADJ 4 CTIMER +5V 1
MICRON
Micron Technology
U.S.A
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