Description

Electronic Component Model: MAX3421EETJ+ is a USB peripheral/host controller that contains the necessary digital logic and analog circuitry to implement a full-speed USB peripheral or a full-/low-speed host compliant to USB specification rev 2.0. It features a built-in transceiver with ±15kV ESD protection and programmable USB connect and disconnect. The MAX3421E operates using a register set accessed by an SPI™ interface that operates up to 26MHz. This component allows any SPI master (microprocessor, ASIC, DSP, etc.) to add USB peripheral or host functionality using a simple 3- or 4-wire SPI interface.

Specifications and 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 Self-Powered Peripheral Applications - ESD Protection on D+, D-, and VBCOMP - Interrupt Output Pin (Level- or Programmable Edge) Allows Polled or Interrupt-Driven SPI Interface - Eight General-Purpose Inputs and Eight General-Purpose 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)

Application Scenarios

- Embedded Systems - Medical Devices - Microprocessors and DSPs - Custom USB Devices - Cameras - Desktop Routers - PLCs - Set-Top Boxes - PDAs - MP3 Players - Instrumentation

Comparison

- Microprocessor-Independent USB Solution - Software Compatible with the MAX3420E USB Peripheral Controller with SPI Interface - Complies with USB Specification Revision 2.0 - Integrated USB Transceiver - Handles USB Flow Control and Double Buffering - Contains Timers for USB Time-Sensitive Operations - Space-Saving Lead-Free TQFP and TQFN Packages - Requires SPI Interface for functionality - Limited General-Purpose Inputs and Outputs