TUSB6250中文资料USB 2.0 低功耗高速 ATA/ATAPI 桥接器解决方案数据手册TI规格书

描述 Description

The TUSB6250 is a USB 2.0 HS-capable function controller with an integrated UTMI compliant PHY. The TUSB6250 is intended as a USB 2.0 to ATA/ATAPI bridge for storage devices using a standard ATA or ATAPI interface.
The TUSB6250 is designed to utilize both the fast performance of the state machine and the programmability and flexibility of the embedded microcontroller and firmware. With the elaborative balance between the microcontroller unit (MCU) and the state machine, in addition to its embedded fast MCU (up to 30 MIPS), eight configurable endpoints, up to 40K bytes of configurable code, and data buffer SRAM, the TUSB6250 provides a bridge solution to meet both the performance and flexibility requirement of the next generation external storage devices. With the a low power consumption USB 2.0 integrated PHY, the TUSB6250 also enables the true USB 2.0 high-speed bus-powered application.

特性 Features

• Universal Serial Bus (USB)
• Integrated USB 2.0 UTMI compliant transceiver (PHY)
• Supports USB suspend/resume and remote wake-up operation
• Supports eight configurable endpoints (four input and four output) with a user-programmable buffer size, in addition to the default control endpoint (endpoint 0):
• All endpoints share the 4K byte data buffer implemented in the SPRAM (single port SRAM).
• Microcontroller Unit (MCU)
• Application code is loadable from either the USB host or the external EEPROM (via the I2C interface)
• 1152 bytes of RAM with multiple bank selectable capability for the internal data buffer (IDATA space)
• 16K byte code RAM with 24K byte sector buffer data space
• Master I2C interface controller for external device accesses capable of 100 Kbits/sec or 400 Kbits/sec transfer speed.
• ATA/ATAPI Interface Controller
• Glueless interface to ATA and ATAPI drives with full ATA and ATAPI protocol support
• Correctly handles all 13 cases in bulk-only transfer protocol under all supported transfer modes.
• Provides multiple flexible transfer options to achieve both high-speed transfer by the state machine and high flexibility with MCU involvement:
• Semi-auto transfer with command transfer by the MCU and data transfer by the state machine
• Supports mass-storage devices compatible with the ATA/ATAPI-5 specification:
• DVD/CD-ROM
• Compact flash
• MO drive
• Provides easy control to put the ATA/ATAPI bus into a 3-state condition through one register bit setting.
• General Features
• Low-power mode (compliant with bus power requirement of