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I2C Controller (AMBA APB <-> I2C)

The I2C Controller provides access to devices with I2C interface. It accepts the Read / Write commands from APB and converts it to the serial I2C access. The controller supports High speed mode with maximum 3.4 Mbps throughput and it is down compatible with fast mode (400kbps) and standard mode (100kbps).

特色

I2C Interface
Compliant with I2C specification version 2.1
Supports a simple bi-directional 2-wire bus for efficient inter-IC control
Supports a Clock generation circuitry to drive I2C clock from APB clock
Supports 100kbps bit transfer rate in the standard mode, 400kbps in the fast mode and 3.4mbps in the High speed mode.
APB Interface
nx8 FIFO to accelerate the data transfer from and to I2C and APB with programmable FIFO watermark.
Compliant with AMBA-APB (ver-2.0) for integration with SOC implementations
Supports APB bus speed up to 100 MHz
Device States are read by periodic polling mechanism or using the interrupt pin.