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AT43USB370 Dataheets PDF



Part Number AT43USB370
Manufacturers ATMEL Corporation
Logo ATMEL Corporation
Description USB 2.0 Full-Speed Host/Function Processor
Datasheet AT43USB370 DatasheetAT43USB370 Datasheet (PDF)

Features • USB 2.0 Full Speed Host/Function Processor – Real-time Host/Function Switching Capability – Internal USB and System Interface Controllers – 32-bit Generic System Processor Interface with DMA – Separate TX and RX Buffers for Host and Function Operations – In-System Firmware Upgrade Autonomous USB Host Operation without System Processor Intervention – Device Enumeration – USB Protocol Management – Bus Bandwidth Reclamation – Status Handling – Control, Bulk, Interrupt and Isochronous Tra.

  AT43USB370   AT43USB370



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Features • USB 2.0 Full Speed Host/Function Processor – Real-time Host/Function Switching Capability – Internal USB and System Interface Controllers – 32-bit Generic System Processor Interface with DMA – Separate TX and RX Buffers for Host and Function Operations – In-System Firmware Upgrade Autonomous USB Host Operation without System Processor Intervention – Device Enumeration – USB Protocol Management – Bus Bandwidth Reclamation – Status Handling – Control, Bulk, Interrupt and Isochronous Transfers – Supports Up to 7 USB Devices Concurrently Full-speed Function Controller – 1 Bi-directional Control Endpoint – 6 Programmable (Maximum Packet Size and Endpoint Type) Endpoints – Control, Interrupt, Bulk and Isochronous Transfer Support – Automatic Retry for Non-Isochronous Endpoints Integrated USB Firmware – Easy-to-use, ANSI C Compliant API USB Device Driver Development – Embedded, OS Agnostic USB Host Stack – Embedded System Interface Controller Driver – Embedded USB Hub Driver 6 MHz Operation 1.8 V and 3.3 V Operation 100-pin LQFP Package • • USB 2.0 Full-Speed Host/Function Processor AT43USB370 • • • • Description Atmel's AT43USB370 is a USB 2.0 compliant, dual-role, full-speed Host/Function processor designed specifically to enable point-to-point USB connectivity for embedded devices. It features an integrated USB host stack, a system interface driver, on-chip USB signaling hardware, 32-bit generic system processor interface with DMA support, and on-the-fly host/function switching capability. The on-chip USB hardware features a USB transceiver, a serial interface engine (SIE), a SIE controller, and an SOF generation block. It supports the physical and data link layer of the USB protocol whereas the USB transaction layer is implemented in firmware. In host mode, the integrated USB firmware consists of the Host USB Controller Driver (HUSBCD) running on the USB Controller (USBC) and the Host System Interface Controller Driver (HSICD) resident on the System Interface Controller (SIC). The HUSBCD provides complete USB protocol management including device enumeration, transaction management, scheduling and frame management, and bus reclamation. The HSICD serves as an interface between the HUSBCD and applications resident on the external system processor. It handles all of the high-level data flow management during a USB transaction. Together, the HUSBCD and the HSICD deliver complete USB host operations autonomously, without the intervention of the system processor. Rev. 3340B–USB–12/03 1 The AT43USB370 communicates with the external system processor through its generic 32-bit host processor interface. This system interface contains 2 Kbytes of FIFO and a DMA engine designed to ensure maximum bus utilization. The automatic USB retry mechanism minimizes data traffic across the system interface. As a function, the AT43USB370 operates in full-speed mode. It supports one control endpoint and a maximum of six programmable (maximum packet size a.


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