Electronic Components Datasheet Search |
|
XRT73L00 Datasheet(PDF) 3 Page - Exar Corporation |
|
XRT73L00 Datasheet(HTML) 3 Page - Exar Corporation |
3 / 53 page áç áç áç áç XRT73L00A E3/DS3/STS-1 LINE INTERFACE UNIT REV. 2.0.1 I TABLE OF CONTENTS GENERAL DESCRIPTION .................................................................................................. 1 FEATURES ................................................................................................................................................ 1 APPLICATIONS ......................................................................................................................................... 1 Figure 1. Block Diagram of the XRT73L00A .................................................................................................... 1 ORDERING INFORMATION ............................................................................................... 2 Figure 2. Pin Out of the XRT73L00A in the 44 Pin TQFP ................................................................................ 2 TABLE OF CONTENTS ......................................................................................................... I PIN DESCRIPTION ............................................................................................................. 3 ELECTRICAL CHARACTERISTICS ................................................................................. 11 ABSOLUTE MAXIMUM RATINGS ................................................................................................... 11 DC ELECTRICAL CHARACTERISTICS ............................................................................................................ 11 AC ELECTRICAL CHARACTERISTICS ............................................................................................................ 12 Figure 3. Timing Diagram of the Transmit Terminal Input Interface ............................................................... 13 Figure 4. Timing Diagram of the Receive Terminal Output Interface ............................................................. 13 Figure 5. Transmit Pulse Amplitude Test Circuit for DS3, E3 and STS-1 Rates ............................................ 13 AC ELECTRICAL CHARACTERISTICS (CONT’D) LINE SIDE PARAMETERS ........................................... 16 Figure 6. ITU-T G.703 Transmit Output Pulse Template for E3 Applications ................................................. 17 Figure 7. Bellcore GR-499-CORE Transmit Output Pulse Template for DS3 Applications ............................ 17 Figure 8. Bellcore GR-253-CORE Transmit Output Pulse Template for SONET STS-1 Applications ........... 18 Figure 9. Microprocessor Serial Interface Data Structure .............................................................................. 18 AC ELECTRICAL CHARACTERISTICS (CONT.) ................................................................................... 19 Figure 10. Timing Diagram for the Microprocessor Serial Interface ............................................................... 19 SYSTEM DESCRIPTION ................................................................................................... 20 THE TRANSMIT SECTION ............................................................................................................................ 20 THE RECEIVE SECTION .............................................................................................................................. 20 THE MICROPROCESSOR SERIAL INTERFACE ................................................................................................ 20 TABLE 1: ROLE OF MICROPROCESSOR SERIAL INTERFACE PINS WHEN THE XRT73L00A IS OPERATING IN THE HARD- WARE MODE ...................................................................................................................................... 20 1.0 Selecting the Data Rate ............................................................................................. 21 TABLE 2: SELECTING THE DATA RATE FOR THE XRT73L00A VIA THE E3 AND STS-1/DS3 INPUT PINS (HARDWARE MODE) ............................................................................................................................................... 21 COMMAND REGISTER CR4 (ADDRESS = 0X04) ........................................................................................... 21 TABLE 3: SELECTING THE DATA RATE FOR THE XRT73L00A VIA THE STS-1/DS3 AND THE E3 BIT-FIELDS WITHIN COMMAND REGISTER CR4 (HOST MODE) .......................................................................................... 21 2.0 The Transmit Section ................................................................................................ 22 2.1 THE TRANSMIT LOGIC BLOCK .............................................................................................................. 22 Figure 11. The Typical Interface for the Transmission of Data in a Dual-Rail Format From the Transmitting Ter- minal Equipment to the Transmit Section of the XRT73L00A ...................................................... 22 Figure 12. How the XRT73L00A Samples the Data on the TPDATA and TNDATA Input Pins ..................... 22 2.1.1 Accepting Single-Rail Data from the Terminal Equipment ................................................. 23 COMMAND REGISTER CR1 (ADDRESS = 0X01) ........................................................................................... 23 Figure 13. The Behavior of the TPDATA and TCLK Input Signals While the Transmit Logic Block is Accepting Single-Rail Data From the Terminal Equipment ........................................................................... 23 2.2 THE TRANSMIT CLOCK DUTY CYCLE ADJUST CIRCUITRY ...................................................................... 23 2.3 THE HDB3/B3ZS ENCODER BLOCK .................................................................................................... 24 2.3.1 B3ZS Encoding ....................................................................................................................... 24 Figure 14. An Example of B3ZS Encoding ..................................................................................................... 24 2.3.2 HDB3 Encoding ...................................................................................................................... 24 Figure 15. An Example of HDB3 Encoding .................................................................................................... 24 2.3.3 Enabling/Disabling the HDB3/B3ZS Encoder ...................................................................... 25 2.4 THE TRANSMIT PULSE SHAPER CIRCUITRY ........................................................................................... 25 |
Similar Part No. - XRT73L00 |
|
Similar Description - XRT73L00 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |