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MAX3420E Arkusz danych(PDF) 1 Page - Maxim Integrated Products |
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MAX3420E Arkusz danych(HTML) 1 Page - Maxim Integrated Products |
1 / 23 page General Description The MAX3420E contains the digital logic and analog circuitry necessary to implement a full-speed USB peripheral compliant to USB specification rev 2.0. A built-in full-speed transceiver features ±15kV ESD pro- tection and programmable USB connect and discon- nect. An internal SIE (serial-interface engine) handles low-level USB protocol details such as error checking and bus retries. The MAX3420E operates using a regis- ter set accessed by an SPI interface that operates up to 26MHz. Any SPI master (microprocessor, ASIC, DSP, etc.) can add USB functionality using the simple 3- or 4-wire SPI interface. Internal level translators allow the SPI interface to run at a system voltage between 1.71V and 3.6V. USB timed operations are done inside the MAX3420E with inter- rupts provided at completion so an SPI master does not need timers to meet USB timing requirements. The MAX3420E includes four general-purpose inputs and outputs so any microprocessor that uses I/O pins to implement the SPI interface can reclaim the I/O pins and gain additional ones. The MAX3420E operates over the extended -40°C to +85°C temperature range and is available in a 32-pin TQFP package (7mm x 7mm) and a space-saving 24- pin TQFN package (4mm x 4mm). Applications Features ♦ Microprocessor-Independent USB Solution ♦ Complies with USB Specification Revision 2.0 (Full-Speed Operation) ♦ Integrated Full-Speed USB Transceiver ♦ Firmware/Hardware Control of an Internal D+ Pullup Resistor ♦ 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 Applications ♦ ESD Protection on D+, D-, and VBCOMP ♦ Interrupt Output Pin (Level or Programmable Edge) Allows Polled or Interrupt-Driven SPI Interface ♦ Intelligent USB Serial Interface Engine (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 ♦ Built-In Endpoint FIFOs: EP0: CONTROL (64 Bytes) EP1: OUT, Bulk or Interrupt, 2 x 64 Bytes (Double-Buffered) EP2: IN, Bulk or Interrupt, 2 x 64 Bytes (Double-Buffered) EP3: IN, Bulk or Interrupt (64 Bytes) ♦ Double-Buffered Data Endpoints Increase Throughput by Allowing the SPI Master to Transfer Data Concurrently with USB Transfers Over the Same Endpoint ♦ SETUP Data Has Its Own 8-Byte FIFO, Simplifying Firmware ♦ Four General-Purpose Inputs and Four General- Purpose Outputs ♦ Space-Saving TQFP and TQFN Packages USB Peripheral Controller with SPI Interface ________________________________________________________________ Maxim Integrated Products 1 19-3781; Rev 0; 8/05 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Cell Phones PC Peripherals Microprocessors and DSPs Custom USB Devices Cameras Desktop Routers PLCs Set-Top Boxes PDAs MP3 Players Instrumentation PART TEMP RANGE PIN- PACKAGE PACKAGE CODE MAX3420EECJ -40°C to +85°C 32 TQFP 7mm x 7mm x 1.4mm C32-1 MAX3420EETG* -40°C to +85°C 24 TQFN 4mm x 4mm x 0.8mm T2444-4 Ordering Information *Future product—contact factory for availability. |
Podobny numer części - MAX3420E |
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Podobny opis - MAX3420E |
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