USB 1.1 Device Controller IP

Overview

Key Features

• Compatible with xHCI v1.1 specification
• Compatible with Standard Linux xHCI controller driver
• Support Fullspeed and Lowspeed
• Support Control, Bulk, Interrupt and Isochronous Transfer Types
• xHCI-like ring management, TRB definitions and doorbell mechanism
• Low-MIPS Operational Model. All data transfers, flow control, ERDY generation are handled by hardware, software only needs to prepare transfer TDs and collect events when transfer is done
• Pipelined transfer mechanism to achieve continuous data streaming
• Innovative Active TRB Prefetching technology to eliminate TRB access latency and improve system performance
• Dynamically reconfigurable Endpoint type, software can reconfigure the same Physical Endpoint to operate as Bulk, Interrupt or Isochronous EP
• Dynamically assigned Endpoint ID, software can reconfigure the same Physical Endpoint with different Endpoint IDs
• Dynamic data buffer allocation for all endpoints, Tx/Rx Data Buffers can be shared by endpoints to optimize RAM usage
• Configurable system bus type (AXI4/AXI3/AHB/APB) and width
• Configurable PHY type (PIPE/UTMI+/ULPI) and width
• Configurable number of Event Rings and interrupts
• Configurable number of supported Endpoints
• Configurable TX/RX Data Buffer sizes to trade-off between performance and area

Deliverables

• The USB 1.1 Device Controller interface is available in Source and netlist products.
• The Source product is delivered in plain text Verilog. If needed VHDL, SystemC code can also be provided.
• Firmware code and Linux driver package
• Documentation contains User's Guide and Release notes.

Technical Specifications