NEC Network Controller uPD98502 - Manual (Page 19)

Preliminary User’s Manual S15543EJ1V0UM 19
LIST OF FIGURES (4/5)
Figure No. Title Page
4-19 Open_Channel Command and Indication ....................................................................................................258
4-20 Close_Channel Command and Indication ...................................................................................................259
4-21 Tx_Ready Command and Indication............................................................................................................260
4-22 Add_Buffers Command ...............................................................................................................................261
4-23 Indirect_Access Command ..........................................................................................................................262
4-24 Work RAM Usage ........................................................................................................................................263
4-25 Structure of the Transmit Queue..................................................................................................................265
4-26 Packet Info Structure ...................................................................................................................................265
4-27 Transmit Queue Packet Descriptor..............................................................................................................266
4-28 Tx VC Table.................................................................................................................................................267
4-29 Raw Cell with CRC-10 .................................................................................................................................269
4-30 Send Indication Format................................................................................................................................269
4-31 LLC Encapsulation Format ..........................................................................................................................270
4-32 Receive VC Table........................................................................................................................................271
4-33 Raw Cell Data Format .................................................................................................................................273
4-34 Receive Indication Format ...........................................................................................................................274
4-35 Mailbox Structure.........................................................................................................................................276
5-1 Block Diagram of Ethernet Controller ..........................................................................................................278
5-2 Tx FIFO Control Mechanism........................................................................................................................295
5-3 Rx FIFO Control Mechanism .......................................................................................................................297
5-4 Buffer Structure for Ethernet Block ..............................................................................................................300
5-5 Transmit Descriptor Format .........................................................................................................................301
5-6 Receive Descriptor Format ..........................................................................................................................301
5-7 Transmit Procedure .....................................................................................................................................304
5-8 Receive Procedure ......................................................................................................................................306
6-1 USB Controller Internal Configuration..........................................................................................................310
6-2 USB Attachment Sequence .........................................................................................................................330
6-3 Mailbox Configuration ..................................................................................................................................333
6-4 Division of Data into USB Packets...............................................................................................................334
6-5 Tx Buffer Configuration ................................................................................................................................335
6-6 Configuration of Transmit Buffer Directory...................................................................................................336
6-7 V R 4120A Processing at Data Transmitting ..................................................................................................338
6-8 Transmit Command Issue............................................................................................................................339
6-9 Transmit Status Register .............................................................................................................................340
6-10 USB Controller Transmit Operation Flow Chart ...........................................................................................341
6-11 Transmit Indication Format ..........................................................................................................................343
6-12 Division of Data into USB Packets...............................................................................................................344
6-13 Receive Buffer Configuration .......................................................................................................................345
6-14 Receive Descriptor Configuration ................................................................................................................346
6-15 Buffer Directory Addition Command ............................................................................................................347