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NET2890 PDF даташит

Спецификация NET2890 изготовлена ​​​​«NetChip» и имеет функцию, называемую «USB Interface Controller».

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Номер произв NET2890
Описание USB Interface Controller
Производители NetChip
логотип NetChip логотип 

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NET2890 Даташит, Описание, Даташиты
www.DataSheet4U.com
NetChip
Technology, Inc.
335 Pioneer Way
Mt View, California 94041
(650) 526-1490 Fax (650) 526-1494
Internet: www.netchip.com
NET2890 USB Interface Controller
Specification
For Revision 2 IC
Doc #: 605-0057-0209
Revision: 2.0 Draft 9
Date: 7/16/99









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NET2890 Даташит, Описание, Даташиты
Specification
NET2890 USB Interface Controller
This document contains material that is confidential to NetChip. Reproduction without the express written
consent of NetChip is prohibited. All reasonable attempts were made to ensure the contents of this
document are accurate, however no liability, expressed or implied is guaranteed. NetChip reserves the right
to modify this document, without notification, at any time.
Revision History
Revision
1.0 Draft 1
1.0 Draft 2
1.0 Draft 3
1.0 Draft 4
Issue Date
June 30, 1997
July 24, 1997
October 4, 1997
October 6, 1997
1.0 Draft 5
2.0 Draft 1
2.0 Draft 2
2.0 Draft 3
November 19, 1997
January 17, 1998
February 13, 1998
March 2, 1998
2.0 Draft 4 March 12, 1998
2.0 Draft 5
2.0 Draft 6
2.0 Draft 7
2.0 Draft 8
2.0 Draft 9
March 23, 1998
April 3, 1998
Aug 24, 1998
Feb 21, 1999
July 16, 1999
Comments
Initial Spec. Based on NET2888 Rev 2 Draft 3
Modified register architecture
More Register Modifications
More Register Modifications (MAINCTL, IRQSTAT1,
IRQSTAT3, IRQENB1, IRQENB3, FIFOSTAT, FIFOINTENB
Clarify some register descriptions
Initial Specification for NET2890 Revision 2.
Update some registers
Update some registers; Change ‘mapped’ to ‘paged’ register
nomenclature
Added some new register bits. Clarified sections of
documentation.
Finalize changes to Revision 2.
Clarify some sections.
Clarify FIFO Valid and FIFO processing
Update AC timing, and DC specifications
Update Endpoint Maximum Packet Length defaults, I/O timing.
Change output resistance in 7.4.1
____________________________________________________________________________________
NetChip Technology, Inc., 1999
335 Pioneer Way, Mountain View, California 94041
TEL (650) 526-1490 FAX (650) 526-1494
http://www.netchip.com
Rev 2.0, Draft 9, July 16, 1999
2









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NET2890 Даташит, Описание, Даташиты
Specification
NET2890 USB Interface Controller
NET2890 USB Interface Controller
1. HIGHLIGHTS ...................................................................................................................................... 7
1.1 FEATURES........................................................................................................................................ 7
1.2 OVERVIEW....................................................................................................................................... 7
1.3 NET2890 BLOCK DIAGRAM ............................................................................................................ 9
1.4 NET2890 TYPICAL SYSTEM BLOCK DIAGRAM................................................................................ 9
1.4.1 Pin Changes .......................................................................................................................... 10
1.4.2 Register Changes .................................................................................................................. 10
1.4.3 Functional Changes .............................................................................................................. 10
1.5 CHANGES FROM REV 1 TO REV 2................................................................................................... 10
1.5.1 Pin Changes .......................................................................................................................... 10
1.5.2 Register Changes .................................................................................................................. 10
1.5.3 Functional Changes .............................................................................................................. 12
1.5.4 Documentation Changes ....................................................................................................... 12
2. PIN CONNECTION DIAGRAM ...................................................................................................... 13
3. PIN DESCRIPTION ........................................................................................................................... 14
4. FUNCTIONAL DESCRIPTION ....................................................................................................... 17
4.1 USB INTERFACE ............................................................................................................................ 17
4.2 USB PROTOCOL ............................................................................................................................ 17
4.2.1 Tokens ................................................................................................................................... 17
4.2.2 Packets .................................................................................................................................. 17
4.2.3 Transaction ........................................................................................................................... 17
4.2.4 Transfer................................................................................................................................. 17
4.3 AUTOMATIC RETRIES..................................................................................................................... 18
4.3.1 Out Transactions................................................................................................................... 18
4.3.2 In Transactions ..................................................................................................................... 18
4.4 PACKET LENGTHS .......................................................................................................................... 18
4.5 USB ENDPOINTS............................................................................................................................ 18
4.5.1 Control Endpoint - Endpoint 0 ............................................................................................. 18
4.5.2 Control Write Transfer Details ............................................................................................. 20
4.5.3 Isochronous Endpoints.......................................................................................................... 23
4.5.4 Bulk Endpoints ...................................................................................................................... 25
4.5.5 Interrupt Endpoints............................................................................................................... 27
4.6 FIFOS ............................................................................................................................................ 28
4.6.1 IN FIFOs............................................................................................................................... 28
4.6.2 OUT FIFOs........................................................................................................................... 29
4.7 INTERRUPT AND STATUS REGISTER OPERATION ............................................................................ 29
4.7.1 Interrupt Status Register 1 (IRQSTAT1) ............................................................................... 29
4.7.2 Interrupt Status Register 2 (IRQSTAT2) ............................................................................... 29
4.7.3 Endpoint Response Registers (EPRSPSET, EPRSTCLR) ..................................................... 29
4.7.4 Endpoint Interrupt Status Register (EPIRQSTAT)................................................................ 29
4.8 LOCAL BUS.................................................................................................................................... 30
4.8.1 Maximum Throughput........................................................................................................... 30
4.8.2 DMA Transfers from NET2890 to Local Bus........................................................................ 31
4.8.3 DMA Transfers from Local Bus to NET2890........................................................................ 31
4.8.4 Terminating DMA Transfers ................................................................................................. 32
4.9 SUSPEND MODE ............................................................................................................................. 33
4.9.1 The Suspend Sequence .......................................................................................................... 33
4.9.2 Host-Initiated Wake-Up ........................................................................................................ 33
____________________________________________________________________________________
NetChip Technology, Inc., 1999
335 Pioneer Way, Mountain View, California 94041
TEL (650) 526-1490 FAX (650) 526-1494
http://www.netchip.com
Rev 2.0, Draft 9, July 16, 1999
3










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