NET2890 datasheet(9/73 Pages) ETC

9 / 73 page

Specification

NET2890 USB Interface Controller

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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

1.3 NET2890 Block Diagram

Serial Interface

Engine

Output

Buffer

Configuration

Registers

SIE_RX_DATA[7:0]

SIE_TX_DATA[7:0]

RX_CTL_DATA[7:0]

FIFO_RD_DATA[7:0]

CFG_RD_DATA[7:0]

LDIN[7:0]

LDOUT[7:0]

LD[7:0]

USB

Setup

Registers

Input Buffer

SETUP_DATA[7:0]

Control

Endpoint 0

FIFO

Endpoint

A FIFO

Endpoint

B FIFO

Endpoint

C FIFO

Endpoint

D FIFO

FIFO_WR_DATA[7:0]

SIE_TX_DATA[7:0]

RX_EP_DATA[7:0]

LDIN[7:0]

1.4 NET2890 Typical System Block Diagram

NET2890

USB Interface

Controller

USB

Connector

USB Cable

Device Controller

CPU

ROM

RAM

Local Bus

Device Electronics and Mechanics

(Printer, Scanner, Modem, etc.)

USB Signals

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