Maxim-integrated 78Q8430 Software Driver Uživatelský manuál stáhnout pdf (Strana 3)

UG_8430_004 78Q8430 Software Driver Development Guidelines

Rev. 1.0 3

Table of Contents

1 Introduction .........................................................................................................................................4

2 List of Features ...................................................................................................................................6

3 MAC Operations..................................................................................................................................8

3.1 Basic Transmit ..............................................................................................................................8

3.2 Basic Receive ...............................................................................................................................9

3.2.1 Hardware Jabber Protection..............................................................................................9

3.3 Transmit PAUSE.........................................................................................................................10

3.3.1 Specify PAUSE Frame....................................................................................................10

3.3.2 Specify PAUSE Time ......................................................................................................10

3.3.3 PAUSE Transmit Immediately.........................................................................................11

3.4 Local PAUSE ..............................................................................................................................11

3.4.1 Disable Local PAUSE......................................................................................................11

3.4.2 Enable Local PAUSE ......................................................................................................11

3.4.3 Start Local PAUSE Timer................................................................................................12

3.5 HNR Frame Transmission ..........................................................................................................12

3.5.1 Specify HNR Frame ........................................................................................................12

3.5.2 HNR Automatic Transmission .........................................................................................12

3.5.3 HNR Transmit Immediately .............................................................................................13

3.6 Receive Interrupt Delay Timer....................................................................................................13

3.7 Host Drop....................................................................................................................................13

3.8 Append CRC...............................................................................................................................14

3.9 Add Padding ...............................................................................................................................15

3.10 Strip CRC....................................................................................................................................15

3.11 Strip Padding ..............................................................................................................................15

4 Packet Classification........................................................................................................................16

4.1 CAM Configuration......................................................................................................................16

4.2 Address Recognition (ARC)........................................................................................................16

4.2.1 Wildcard Address Filters .................................................................................................16

4.2.2 Promiscuous Mode Off....................................................................................................17

4.2.3 Promiscuous Mode On....................................................................................................17

4.2.4 Unicast Address Filters ...................................................................................................17

4.2.5 Multicast Address Filters .................................................................................................19

4.2.6 Negative Address Filters .................................................................................................21

4.3 OnNow Packet Recognition........................................................................................................21

4.3.1 Enable OnNow ................................................................................................................21

4.3.2 Disable OnNow................................................................................................................21

4.3.3 Set the OnNow Pattern ...................................................................................................21

4.4 Magic Packet Recognition ..........................................................................................................22

4.4.1 Enable Magic Packet.......................................................................................................23

4.4.2 Disable Magic Packet......................................................................................................23

4.4.3 Set Magic Packet MAC Address .....................................................................................23

4.5 Classification Interrupts ..............................................................................................................24

5 Media Controller Offload Features.................................................................................................. 25

5.1 DMA............................................................................................................................................25

5.1.1 Slave DMA Read Mode...................................................................................................25

5.1.2 Slave DMA Write Mode...................................................................................................25

5.2 Jumbo Frames............................................................................................................................26

5.2.1 Receive Jumbo................................................................................................................26

5.2.2 Transmit Jumbo...............................................................................................................27

5.3 Watermarking..............................................................................................................................28

5.3.1 Headroom Watermark.....................................................................................................28

5.3.2 PAUSE Watermark Level................................................................................................28

5.3.3 Watermark Interrupt ........................................................................................................29

1 2 3 4 5 6 7 8 ... 53 54

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