CBM9001A Embedded USB Host Controller, Operating Full Speed at 12 Mbps with 256-byte Internal SRAM Buffer
The CBM9001A is an Embedded USB Host Controller/USB Slave Controller capable of communicating at either full speed or low speed. The CBM9001A interfaces to devices such as microprocessors, microcontrollers, DSPs, or directly to a variety of buses such as ISA, PCMCIA, and others.
The CBM9001A incorporates USB Serial Interface functionality along with internal full or low-speed transceivers. The CBM9001A supports and operates in USB full-speed mode at 12 Mbps, or in low-speed mode at 1.5 Mbps. When in host mode, the CBM9001A is the master and controls the USB bus and the devices that are connected to it. In peripheral mode, otherwise known as a slave device, the CBM9001A operates as a variety of full- or low-speed devices.
The CBM9001A data port and microprocessor interface provide an 8-bit data path I/O or DMA bidirectional, with interrupt support to allow easy interface to standard microprocessors or microcontrollers such as Motorola or Intel CPUs and many others.
The CBM9001A has 256 bytes of internal RAM, which is used for control registers and data buffers. The available Pb-free package is a 48-pin (CBM9001A) package. All packages operate at 3.3 VDC. The I/O interface logic is 5 V-tolerant.
Fig.1 Logic Block Diagram
Features
■ First USB Host/Slave controller for embedded systems in the market with a standard microprocessor bus interface
■ Supports both full speed (12 Mbps) and low speed (1.5 Mbps) USB transfer in both master and slave modes
■ Conforms to USB Specification 1.1 for full- and low-speed
■ Operates as a single USB host or slave under software control
■ Automatic detection of either low- or full-speed devices
■ 8-bit bidirectional data, port I/O(DMAsupportedinslavemode)
■ On-chip SIE and USB transceivers
■ On-chip single root HUB support
■ 256-byte internal SRAM buffer
■ Ping-pong buffers for improved performance
■ Operates from 12 or 48 MHz crystal or oscillator (built-in DPLL)
■ 5 V-tolerant interface
■ Suspend/resume, wake up, and low-power modes are supported
■ Auto-generation of SOF and CRC5/16
■ Auto-address increment mode saves memory READ/WRITE cycles
■ Development kit including source code drivers is available
■ 3.3-V power source, 0.35 micron CMOS technology
■ Available in 48-pin TQFP package
Electrical Specifications
Absolute Maximum Ratings
This section lists the absolute maximum ratings of the CBM9001A. Exceeding maximum ratings may shorten the useful life of the device. User guidelines are not tested.
Table.1
Package Diagram
Fig.2
Ordering Information
Table.2
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