HFBR-4663 Agilent(Hewlett-Packard), HFBR-4663 Datasheet
HFBR-4663
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HFBR-4663 Summary of contents
Page 1
... HFBR-2416), ensures compliance to the 10Base-FL Standard with a minimum number of external components and board space. The HFBR-4663 offers a standard IEEE 802.3 AU interface that allows directly connected to industry standard manchester encoder/decoder chips or an AUI connector. The fiber-optic LED driver offers a current drive output that directly drives the HFBR-14X4 transmitter ...
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Block Diagram SQEN/JABD Tx+ AUI Tx- RECEIVER Tx SQUELCH COL+ AUI 10 MHz GATED DRIVER COL- Rx+ AUI DRIVER Rx- RRSET V GND + (+ (+5 V) FIBER OPTIC 1 MHz IDLE SIGNAL SQE ...
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Pin Connection 28 – PIN PCC Q – SQEN/JABD 5 Rx+ 6 Rx- 7 LBDIS Tx Pin Description Pin Name 1 CLSN Indicates that a collision is taking ...
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Pin Description (cont.) Pin Name 1 5 XMT Indicates that transmission is taking place. Active low LED driver, open collector. Event is extended with internal timer for visibility RCV Indicates that the transceiver is receiving a frame from ...
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Operating Conditions Parameter Min. Supply Voltage ( LED on Current RRSET RTSET Electrical Characteristics Unless otherwise specified Parameter Power Supply Current While Transmitting LED Drivers: V ...
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AC Electrical Characteristics Symbol Transmit t Transmit Turn-On Pulse Width TXNPW t Transmit Turn-Off Pulse Width from Data to Idle TXFPW t Transmit Loopback Start-up Delay TXLP t Transmit Turn-On Delay TXODY t Transmit Idle Frequency TXIDF t Transmit Idle ...
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... K ±1% +VRF C6 22 NOTES: 1. ALL RESISTORS ±5% UNLESS OTHERWISE SHOWN. 2. ALL CAPACITORS ±10% UNLESS OTHERWISE SHOWN. 3. THE HFBR-4663 DATA SHEET (PUBLICATION #5091-7391E 4/93) CONTAINS ERRORS THAT HAVE SUBSEQUENTLY BEEN CORRECTED IN THIS SCHEMATIC. 4. ALL CAPACITORS ARE U12 R19 R20 1 ...
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... System Description Figure 1 shows a schematic diagram of the HFBR-4663 in an internal or external 10BASE-FL MAU. On one side of the transceiver is the AU interface and the other is the fiber optic interface. The AU interface is AC coupled when used in an external transceiver or an internal transceiver. The AU interface for ...
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RTSET resistor RTSET= –––––– l62 IOUT The transmitter enters the idle state when it detects start of idle on Tx+ and Tx- input pins. After detecting the start of idle, the transmitter switches to a ...
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... MHz idle signal is still transmitted. LED Drivers The HFBR-4663 has five LED drivers. The LED driver pins are active low, and the LEDs are normally off (except for LMON). The LEDs are tied to their ...
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... When the input falls below a preset voltage, the HFBR-4663 goes into the Low Light state. In the Low Light state the transmitter is disabled, but continues sending the I MHz idle ...
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SQE Test: The FOIRL standard did not include the option of attaching a fiber transceiver to a DTE. Adding the SQE test to 10BASE-FL enables a 10BASE-FL transceiver to attach to a DTE Least 2 ...
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Timing Diagrams t TXNPW T X+ VALID DATA TXODY TXSDY TxOUT VALID t TXLP R X+ VALID DATA R X- Figure 6. Transmit and Loopback Timing. V IN+ VALID DATA V IN RXODY RXSDY ...
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V IN+ V IN- TxOUT VALID DATA t SQEXR COL+ CS0 COL- Rx Rx- Figure 9. Collision Timing. TxOUT V IN+ VALID DATA V IN- t SQEXR COL+ CS0 COL- Rx+ RxIN RxIN Rx- Figure 10. Collision ...
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Tx+ VALID Tx- t JAD VALID DATA TxOUT COL+ COL- Figure 12. Jabber Timing TxOUT XMT V IN+ V IN- RCV V IN+ V IN- LMON t LLPH Figure 13. LED ...