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Part: NET2890
Category:
Interface and Interconnect
-> USB
-> USB 1.1
Description: Usb Programmable Interface Controller Specification
Company: NetChip Technology
Datasheet: Download NET2890 datasheet File size : 559 kB
Request For quote: Find where to buy NET2890
Datasheet text preview:
335 Pioneer Way Mt View, California 94041 (650) 526-1490 Fax (650) 526-1494 e-mail: sales@netchip.com Internet: www.netchip.com
NetChip Technology, Inc.
NET2890 USB Interface Controller Specification
For Revision 2 IC
Doc #: 605-0057-0209 Revision: 2.0 Draft 9 Da t e : 7/16/99
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 1.0 Draft 5 2.0 Draft 1 2.0 Draft 2 2.0 Draft 3 2.0 Draft 4 2.0 Draft 5 2.0 Draft 6 2.0 Draft 7 2.0 Draft 8 2.0 Draft 9 Issue Date June 30, 1997 July 24, 1997 October 4, 1997 October 6, 1997 November 19, 1997 January 17, 1998 February 13, 1998 March 2, 1998 March 12, 1998 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
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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. 3. 4. PIN CONNECTION DIAGRAM ............ 13 PIN DESCRIPTION ......... 14 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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