Refer to the PDF data sheet for device specific package drawings
The universal asynchronous receiver/transmitter (UART) module provides an interface between the DSP and a UART terminal interface or other UART-based peripheral. The UART is based on the industry standard TL16C550 asynchronous communications element, which, in turn, is a functional upgrade of the TL16C450. Functionally similar to the TL16C450 on power up (single character or TL16C450 mode), the UART can be placed in an alternate FIFO (TL16C550) mode. This relieves the DSP of excessive software overhead by buffering received and transmitted characters. The receiver and transmitter FIFOs store up to 16 bytes including three additional bits of error status per byte for the receiver FIFO.
The UART performs serial-to-parallel conversions on data received from a peripheral device and parallel-to-serial conversion on data received from the DSP. The DSP can read the UART status at any time. The UART includes control capability and a processor interrupt system that can be tailored to minimize software management of the communications link. For more information on UART, see the Universal Asynchronous Receiver/Transmitter (UART) for KeyStone Devices User's Guide.