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SP-RFI-I03-980202 Datasheet(PDF) 9 Page - List of Unclassifed Manufacturers |
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SP-RFI-I03-980202 Datasheet(HTML) 9 Page - List of Unclassifed Manufacturers |
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9 / 200 page  ix Radio Frequency Interface Specification SP-RFI-I03-980202 Figures FIGURE 1-1. TRANSPARENT IP TRAFFIC THROUGH THE DATA-OVER-CABLE SYSTEM ..................................2 FIGURE 1-2. DATA-OVER-CABLE REFERENCE ARCHITECTURE ......................................................................3 FIGURE 1-3. SERVER LOCATION NOT AT CMTS ............................................................................................6 FIGURE 3-1. PROTOCOL STACK ON THE RF INTERFACE................................................................................11 FIGURE 3-2. DATA FORWARDING THROUGH THE CM AND CMTS...............................................................12 FIGURE 3-3. EXAMPLE CONDITION FOR NETWORK LOOPS ...........................................................................13 FIGURE 3-4. MAC FORWARDER ....................................................................................................................15 FIGURE 4-1. QPSK SYMBOL MAPPING..........................................................................................................23 FIGURE 4-2. 16QAM GRAY-CODED SYMBOL MAPPING ...............................................................................23 FIGURE 4-3. 16QAM DIFFERENTIAL-CODED SYMBOL MAPPING .................................................................23 FIGURE 4-4. SCRAMBLER STRUCTURE...........................................................................................................26 FIGURE 4-5. NOMINAL BURST TIMING ..........................................................................................................29 FIGURE 4-6. WORST-CASE BURST TIMING....................................................................................................30 FIGURE 4-7. EXAMPLE FRAME STRUCTURES WITH FLEXIBLE BURST LENGTH MODE..................................35 FIGURE 4-8. SIGNAL-PROCESSING SEQUENCE ...............................................................................................36 FIGURE 4-9. TDMA UPSTREAM TRANSMISSION PROCESSING ......................................................................37 FIGURE 5-1. EXAMPLE OF INTERLEAVING MPEG PACKETS IN DOWNSTREAM ............................................43 FIGURE 5-2. FORMAT OF AN MPEG PACKET ................................................................................................43 FIGURE 5-3. PACKET FORMAT WHERE A MAC FRAME IMMEDIATELY FOLLOWS THE POINTER_FIELD.......45 FIGURE 5-4. PACKET FORMAT WITH MAC FRAME PRECEDED BY STUFFING BYTES ...................................45 FIGURE 5-5. PACKET FORMAT SHOWING MULTIPLE MAC FRAMES IN A SINGLE PACKET ..........................45 FIGURE 5-6. PACKET FORMAT WHERE A MAC FRAME SPANS MULTIPLE PACKETS ...................................46 FIGURE 6-1. GENERIC MAC FRAME FORMAT ...............................................................................................49 FIGURE 6-2. UPSTREAM MAC/PMD CONVERGENCE ....................................................................................49 FIGURE 6-3. MAC HEADER FORMAT ............................................................................................................51 FIGURE 6-4. ETHERNET/802.3 PACKET PDU FORMAT ..................................................................................53 FIGURE 6-5. ATM CELL MAC FRAME FORMAT ...........................................................................................54 FIGURE 6-6. RESERVED PDU FORMAT ..........................................................................................................55 FIGURE 6-7. TIMING MAC HEADER ..............................................................................................................56 FIGURE 6-8. MANAGEMENT MAC HEADER ..................................................................................................57 FIGURE 6-9. REQUEST MAC HEADER FORMAT ............................................................................................58 FIGURE 6-10. CONCATENATION OF MULTIPLE MAC FRAMES........................................................................59 FIGURE 6-11. CONCATENATION MAC HEADER FORMAT ...............................................................................59 FIGURE 6-12. EXTENDED MAC FORMAT ........................................................................................................60 FIGURE 6-13. MAC HEADER AND MAC MANAGEMENT MESSAGE HEADER FIELDS.....................................62 FIGURE 6-14. FORMAT OF PACKET PDU FOLLOWING THE TIMING HEADER..................................................64 FIGURE 6-15. UPSTREAM CHANNEL DESCRIPTOR ...........................................................................................65 FIGURE 6-16. TOP-LEVEL ENCODING FOR A BURST DESCRIPTOR ..................................................................66 FIGURE 6-17. EXAMPLE OF UCD ENCODED TLV DATA.................................................................................68 FIGURE 6-18. MAP FORMAT ...........................................................................................................................68 FIGURE 6-19. MAP INFORMATION ELEMENT STRUCTURE..............................................................................69 |
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