Aardvark I2C/SPI Host Adapter TP240141

Giao tiếp USB với I2C và SPI

The Aardvark I2C/SPI Host Adapter is a fast and powerful I2C bus and SPI bus host adapter through USB. It allows a developer to interface a Windows, Linux, or Mac OS X PC via USB to a downstream embedded system environment and transfer serial messages using the I2C and SPI protocols.

• True 800 kbps† performance over higher bandwidth USB versus slower RS-232.
• Supports standard mode (100 kbps) and fast (400 kbps) mode as well as various speeds ranging from 1 kHz to 800 kHz†.
• Supports inter-bit and inter-byte clock stretching.
• Supports multi-master.
• Master transmit and receive.
• Asynchronous slave transmit and receive.
• Software configurable I2C pull-up resistors.
• Software configurable target power pins to power downstream devices.
• Repeated Start, 10-bit slave addressing, and Combined Format transactions.

The Aardvark I2C/SPI Host Adapter is compatible with:

• Display Data Channel (DDC)
• System Management Bus (SMBus)
• Power Management Bus (PMBus)
• Smart Battery Bus (SBBus)
• Intelligent Platform Management Interface (IPMI)
• Two-Wire Interface (TWI)

Learn more about I2C in the I2C Background Article.

† Actual system bus speed may vary as a function of capacitance.

• Operates in master or slave mode.
• Up to 8 Mbps master signaling rate.
• Up to 4 Mbps slave signaling rate.
• Full duplex master transmit/receive.
• Asynchronous slave transmit/receive.
• Software configurable target power pins to power downstream devices.
• Software configurable Slave Select (SS) polarity in master mode.

Learn more about SPI in the SPI Background article.

• I2C and SPI pins can be repurposed for more general use, allowing them to be used for custom signals on target systems.
• GPIO functionality can also be combined with I2C or SPI to interact with your target system.
• GPIO configuration is cached internally to preserve settings between operational modes.

The Aardvark adapter comes complete with a royalty-free API.

The low cost makes it affordable for a company to provide every developer with their own interface. The benefits of every developer having their own interface are:

• Less time wasted because developers do not have to share tools or go to the lab to debug simple problems.
• Less wasted time means higher productivity because developers can identify and fix problems quickly and easily with less down-time.
• Higher productivity means shorter development cycles. Projects get done on time and on budget.

By saving just a few hours of engineering time, the Aardvark adapter will have paid for itself.

The Aardvark adapter is completely field-upgradable via USB. Total Phase is committed to improving the Aardvark adapter and making these improvements available to our customers.