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USB2641I Datasheet(PDF) 1 Page - Microchip Technology |
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USB2641I Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 59 page  2015-2021 Microchip Technology Inc. DS00001948C-page 1 General Description The Microchip USB2640i/USB2641i is a USB 2.0 com- pliant, Hi-Speed hub for USB port expansion with an attached mass storage class peripheral controller. The controller allows read/write capability to popular flash media from the following families: • Secure DigitalTM (SD) • MultiMediaCardTM (MMC) • xD-Picture CardTM (xD)1 • Memory Stick(MS) The USB2640i/USB2641i is a fully integrated, single chip solution providing USB expansion and integrated flash card media reader/writer capability of ultra high performance operation. Average sustained transfer rates exceeding 35 MB/s are possible2. Highlights • Hub controller with internally connected ultra fast flash media reader/writer and 2 exposed down- stream ports for external peripheral expansion • Flash media reader/writer employs multiplexed card interfaces which are optimized for use with single card insertion combo sockets • Hardware-controlled data flow architecture for all self-mapped media • Optional support for external firmware access via SPI interface • PortMap - Flexible port mapping and port disable sequencing supports multiple platform designs • PortSwap - Programmable USB differential-pair pin loca- tions eases PCB design by aligning USB sig- nal traces directly to connectors • PHYBoost - Programmable USB transceiver drive strength recovers signal integrity Features • Compliant with the following flash media card specifications: SD 2.0 / MMC 4.2 / MS 1.43 / MS- Pro 1.02 / MS-PRO-HG 1.01 / MS-Duo 1.10 / xD 1.2 • Supports a single external 3.3 V supply source; internal regulators provide 1.8 V internal core volt- age for additional bill of materials and power sav- ings • The transaction translator (TT) in the hub sup- ports operation of Full-Speed and Low-Speed peripherals • 9 K RAM | 64 K on-chip ROM • Enhanced EMI rejection and ESD protection per- formance • On board 24 MHz crystal driver circuit • Optional external 24 MHz clock input • 8051 8-bit microprocessor • Hub and flash media reader/writer configuration from a single source: External I2C ROM or exter- nal SPI ROM - Configures internal code using an external I2C EEPROM - Supports external code using a SPI Flash EEPROM - Customizable vendor ID, product ID, lan- guage ID • EEPROM update via USB • 48-pin QFN RoHS compliant package (7 x 7 mm) • The Microchip USB2640i/USB2641i supports the industrial temperature range of -40°C to 85°C Applications • Desktop and mobile PCs • Personal mobile devices • Printers • GPS navigation systems • Media Players/Viewers • Consumer A/V • Set-top boxes • Industrial products 1. Support and capabilities for xD-Picture Card are not applicable for the USB2641I. Please obtain a user license from the xD-Picture Card License Of- fice to support this flash media format. 2. Host and media dependent. USB2640i/USB2641i Industrial Temperature USB 2.0 Flash Media Controller and USB Hub Combo |
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