MAX3421EETG中文資料美信數(shù)據(jù)手冊PDF規(guī)格書

General Description

The MAX3421E USB peripheral/host controller contains the digital logic and analog circuitry necessary to implement a full-speed USB peripheral or a full-/low-speed host compliant to USB specification rev 2.0. A built-in transceiver features ±15kV ESD protection and programmable USB connect and disconnect. An internal serial interface engine (SIE) handles low-level USB protocol details such as error checking and bus retries. The MAX3421E operates using a register set accessed by an SPI interface that operates up to 26MHz. Any SPI master (microprocessor, ASIC, DSP, etc.) can add USB peripheral or host functionality using the simple 3- or 4-wire SPI interface.

Features

? Microprocessor-Independent USB Solution

? Software Compatible with the MAX3420E USB Peripheral Controller with SPI Interface

? Complies with USB Specification Revision 2.0 (Full-Speed 12Mbps Peripheral, Full-/Low-Speed 12Mbps/1.5Mbps Host)

? Integrated USB Transceiver

? Firmware/Hardware Control of an Internal D+ Pullup Resistor (Peripheral Mode) and D+/DPulldown Resistors (Host Mode)

? Programmable 3- or 4-Wire, 26MHz SPI Interface

? Level Translators and VL Input Allow Independent System Interface Voltage

? Internal Comparator Detects VBUS for SelfPowered Peripheral Applications

? ESD Protection on D+, D-, and VBCOMP

? Interrupt Output Pin (Level- or ProgrammableEdge) Allows Polled or Interrupt-Driven SPI Interface

? Eight General-Purpose Inputs and Eight GeneralPurpose Outputs

? Interrupt Signal for General-Purpose Input Pins, Programmable Edge Polarity

? Intelligent USB SIE

? Automatically Handles USB Flow Control and Double Buffering

? Handles Low-Level USB Signaling Details

? Contains Timers for USB Time-Sensitive Operations so SPI Master Does Not Need to Time Events

? Space-Saving Lead-Free TQFP and TQFN Packages (5mm x 5mm)

Applications

??? Embedded Systems

??? Medical Devices

??? Microprocessors and DSPs

??? Custom USB Devices

??? Cameras

??? Desktop Routers

??? PLCs

??? Set-Top Boxes

??? PDAs

??? MP3 Players

??? Instrumentation