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Part: NET2888
Category:
Interface and Interconnect
-> USB
-> USB 1.1
Description: Turbousb - Usb Interface Controller Specification.
Company: NetChip Technology
Datasheet: Download NET2888 datasheet File size : 559 kB
Request For quote: Find where to buy NET2888
Datasheet text preview:
NetChip Technology, Inc.
335 Pioneer Way Mt View, California 94041 (650) 526-1490 Fax (650) 526-1494 e-mail: sales@netchip.com Internet: www.netchip.com
NET2888 USB Interface Controller Specification
for NET2888 Revision 3 IC
Doc #: 605-0002-0300 Revision: 3.0 Date: 12 / 17 / 97
Specification
NET2888 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 2.0 Draft 1 2.0 Draft 2 2.0 Draft 3 2.0 2.1 3.0 Issue Date May 7, 1997 May 7, 1997 May 13, 1997 June 13, 1997 August 1, 1997 November 19, 1997 December 17, 1997 Comments NET2888 Engineering Sample Specification Initial Release for NET2888 Rev 2 Silicon Add FIFO thresholds and interrupts, and USB string enable Add some extended registers, add FIFO valid bit to EP4STAT, TOGGLE bits Final NET2888 Rev2 Specification. Improved local bus timing specifications. Clarify USB Status Register descriptions Final NET2888 Rev3 Specification.
____________________________________________________________________________________ © NetChip Technology, Inc., 1998 335 Pioneer Way, Mountain View, California 94041 TEL (650) 526-1490 FAX (650) 526-1494 http://www.netchip.com
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Specification
NET2888 USB Interface controller
NET2888 USB Interface Controller
1. Highlights ............6 1.1 Features..........6 1.2 Overview........6 1.3 NET2888 Block Diagram .......7 1.4 NET2888 Typical System Block Diagram.......7 1.5 Changes from Rev 2 to Rev 3 ..........8 1.5.1 Pin Changes............8 1.5.2 Register Changes ....8 1.5.3 Functional Changes .........8 1.6 Changes From Rev 1 to Rev 2..........8 1.6.1 Pin Changes............8 1.6.2 Register Changes ....8 1.6.3 Functional Changes .........9 2. Pin Connection Diagram ............ 10 3. Pin Description .. 11 4. Functional Description ...... 14 4.1 USB Interface..............14 4.2 Local Bus ..... 14 4.2.1 CPU Controlled USB to Local Bus Transfers ........ 14 4.2.2 CPU Controlled Local Bus to USB Transfers ........ 15 4.2.3 DMA Controlled USB to Local Bus Transfers.......15 4.2.4 DMA Controlled Local Bus to USB Transfers.......16 4.2.5 Terminating DMA Transfers ........ 16 4.2.6 USB Endpoint 1 Receive Mailboxes.......16 4.2.7 USB Endpoint 2 Transmit Mailboxes.....16 4.3 Suspend Mode ............. 17 4.3.1 The Suspend Sequence...17 4.3.2 Device-Remote Wake-Up........17 4.3.3 Host-Initiated Wake-Up .......... 17 4.4 NET2888 Power Configuration ........... 17 4.4.1 Bus-Powered Device ...... 18 4.4.2 Self-Powered Device ...... 18 5. Local Registers...19 5.1 Register Description .... 19 5.2 Register Summary ....... 19 5.3 (Address 00h; DCTL) DMA Control Register........20 5.4 (Address 01h; IRQENB1) Interrupt Enable Register 1 .......... 20 5.5 (Address 02h; IRQSTAT1) Interrupt Status Register 1 ......... 22 5.6 (Address 03h; IRQENB2) Interrupt Enable Register 2 .......... 22 5.7 (Address 04h; IRQSTAT2) Interrupt Status Register 2 ......... 22 5.8 (Address 08h; EP1IDX) Endpoint 1 Index Register ..... 23 5.9 (Address 09h; EP1DATA) Endpoint 1 Receive Mailbox Data........23 5.10 (Address 0Ch; EP2IDX) Endpoint 2 Index Register............23 5.11 (Address 0Dh; EP2DATA) Endpoint 2 Transmit Mailbox Data.........24 5.12 (Address 0Eh; EP2POLL) Endpoint 2 Interrupt Polling Interval Register ... 24 ____________________________________________________________________________________ © NetChip Technology, Inc., 1998 335 Pioneer Way, Mountain View, California 94041 TEL (650) 526-1490 FAX (650) 526-1494 http://www.netchip.com 3
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