Texas Instruments’ C2000 digital signal controller (DSC) gets a major boost with the Control
Law Accelerator (CLA). This 32-bit floating-point controller speeds up the processing,
often by a factor of five, of analog chores
such as motor control and power-supply
management. It executes programs stored
in shared SRAM, up to 64 kbytes.
The main 60-MHz C28x core has
its own SRAM, flash, and boot ROM.
It also has access to the full peripheral
complement, while the CLA is limited to
the 16-channel, 12-bit, 4.6-Msample/s
analog-to-digital converter (ADC) and
the enhanced pulse-width modulation
(ePWM) module. This is sufficient for
a range of control applications. The
ePWM has further refinements that provide
finer timing and frequency control.
The CLA offers the usual complement of C2000 peripherals, including SPI, I2C, SCI,
CAN, and LIN interfaces. There is also an enhanced quadrature encoder pulse (eQEP)
and enhanced capture (eCAP) modules. Pricing for the TMS320F2802x/F2803x starts
under $2.
Texas Intruments • www.ti.com
See Associated Figure