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NET2270 데이터시트 PDF




NetChip에서 제조한 전자 부품 NET2270은 전자 산업 및 응용 분야에서
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부품번호 NET2270 기능
기능 USB 2.0 Interface Controller
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NET2270 데이터시트, 핀배열, 회로
NetChip
Technology, Inc.
335 Pioneer Way
Mt View, California 94041
(650) 526-1490 Fax (650) 526-1494
Internet: www.netchip.com
NET2270 USB 2.0 Interface Controller
www.DataSheet4U.com
Doc #: 605-0139-0350
Revision: 3.6
Date: April 17, 2003




NET2270 pdf, 반도체, 판매, 대치품
Specification
NET2270 USB Interface Controller
4.6.5 DMA Performance.................................................................................................................28
4.6.5.1 DMA Read........................................................................................................................................28
4.6.5.2 DMA Write .......................................................................................................................................28
5 USB FUNCTIONAL DESCRIPTION...............................................................................................29
5.1 USB INTERFACE.............................................................................................................................29
5.2 USB PROTOCOL .............................................................................................................................29
5.2.1 Tokens....................................................................................................................................29
5.2.2 Packets...................................................................................................................................29
5.2.3 Transaction............................................................................................................................30
5.2.4 Transfer .................................................................................................................................30
5.3 AUTOMATIC RETRIES .....................................................................................................................30
5.3.1 Out Transactions ...................................................................................................................30
5.3.2 In Transactions ......................................................................................................................30
5.4 PING FLOW CONTROL.....................................................................................................................30
5.5 PACKET SIZES.................................................................................................................................30
5.6 USB ENDPOINTS ............................................................................................................................31
5.6.1 Control Endpoint - Endpoint 0 ..............................................................................................31
5.6.1.1 Control Write Transfer......................................................................................................................31
5.6.2 Control Write Transfer Details..............................................................................................32
5.6.2.1 Control Read Transfer.......................................................................................................................33
5.6.2.2 Control Read Transfer Details ..........................................................................................................33
5.6.3 Isochronous Endpoints ..........................................................................................................34
5.6.3.1 Isochronous Out Transactions...........................................................................................................35
5.6.3.2 Isochronous In Transactions .............................................................................................................36
5.6.4 Bulk Endpoints.......................................................................................................................37
5.6.4.1 Bulk Out Transactions ......................................................................................................................37
5.6.4.2 Bulk In Endpoints .............................................................................................................................38
5.6.5 Interrupt Endpoints................................................................................................................39
5.6.5.1 Interrupt Out Transactions ................................................................................................................39
5.6.5.2 Interrupt In Endpoints .......................................................................................................................39
5.7 PACKET BUFFERS ...........................................................................................................................40
5.7.1 IN Endpoint Buffers ...............................................................................................................40
5.7.2 OUT Endpoint Buffers ...........................................................................................................41
5.8 USB TEST MODES..........................................................................................................................42
6 INTERRUPT AND STATUS REGISTER OPERATION...............................................................43
6.1 INTERRUPT STATUS REGISTERS (IRQSTAT0, IRQSTAT1) ...........................................................43
6.2 ENDPOINT RESPONSE REGISTERS (EPRSP_CLR, EPRSP_SET)....................................................43
6.3 ENDPOINT STATUS REGISTER (EP_STAT0, EP_STAT1) ..............................................................43
7 POWER MANAGEMENT.................................................................................................................44
7.1 SUSPEND MODE..............................................................................................................................44
7.1.1 The Suspend Sequence...........................................................................................................44
7.1.2 Host-Initiated Wake-Up.........................................................................................................45
7.1.3 Device-Remote Wake-Up.......................................................................................................45
7.1.4 Resume Interrupt ...................................................................................................................45
7.2 NET2270 POWER CONFIGURATION ...............................................................................................45
7.2.1 Self-Powered Device..............................................................................................................45
7.2.2 Low-Power Modes .................................................................................................................45
7.2.2.1 USB Suspend (Unplugged from USB)..............................................................................................45
7.2.2.2 Power-On Standby ............................................................................................................................46
8 CONFIGURATION REGISTERS.....................................................................................................47
8.1 REGISTER DESCRIPTION .................................................................................................................47
______________________________________________________________________________
NetChip Technology, Inc., 2003
335 Pioneer Way, Mountain View, California 94041
TEL (650) 526-1490 FAX (650) 526-1494
http://www.netchip.com
Rev 3.6, April 17, 2003
4

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NET2270 전자부품, 판매, 대치품
Specification
NET2270 USB Interface Controller
1 Introduction
1.1 Features
USB Specification Version 2.0 Compliant (high and full speed)
Interfaces between a local CPU bus and a USB bus
Supports USB Full Speed (12 Mb/sec) and High Speed (480 Mb/sec)
Supports optional Split Bus DMA, with dedicated DMA and CPU access
Provides 3 Configurable Endpoints, in addition to Endpoint 0
Each endpoint can be Isochronous, Bulk, or Interrupt, as well as IN or OUT
Supports Max Packet Size up to 1K bytes, double buffered
Internal 2 Kbyte memory provides transmit and receive buffers
Local CPU bus easily interfaces to generic CPUs
8-bit or 16-bit CPU or DMA bus transfers
Multiple register address modes supports both direct and indirect register addressing
Automatic retry of failed packets
Diagnostic register allows forced USB errors
Software controlled disconnect allows re-enumeration
Atomic operation to set and clear status bits, simplifying software
Low power CMOS in 64 Pin Plastic TQFP Package
30 MHz oscillator with internal phase-lock loop multiplier
Provides an output clock to the local bus - 8 programmable frequencies from OFF to 60 MHz
3.3V operating voltage with 5V tolerant I/O
1.2 Overview
The NET2270 USB Interface Controller allows control, isochronous, bulk and interrupt transfers between
a local bus and a Universal Serial Bus (USB). The NET2270 supports the Device side of a connection
between a USB host computer and intelligent peripherals such as image scanners, printers, and digital
cameras.
The six main modules of the NET2270 are the USB Transceiver, Serial Interface Engine, USB Protocol
Controller, Endpoint Packet Buffers, Local Bus Interface, and the Configuration Registers.
USB Transceiver:
Supports Full Speed (12 MHz) or High Speed (480 MHz) operation.
Serial data transmitter and receiver.
Parallel data interface to SIE.
Single parallel data clock output with on-chip PLL to generate higher speed serial data clocks
Data and clock recovery from USB serial data stream.
SYNC/EOP generation and checking.
Bit-stuffing/unstuffing; bit stuff error detection
Logic to facilitate Resume signaling
Logic to facilitate Wake Up and Suspend detection
Ability to switch between Full-Speed and High-Speed terminations/signaling
______________________________________________________________________________
NetChip Technology, Inc., 2003
335 Pioneer Way, Mountain View, California 94041
TEL (650) 526-1490 FAX (650) 526-1494
http://www.netchip.com
Rev 3.6, April 17, 2003
7

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