Texas Instruments TMS320F2801, TMS320F2809, TMS320F2808 Serial Port Peripherals, Register Map

TMS320F2809, TMS320F2808, TMS320F2806

TMS320F2802, TMS320F2801, TMS320C2802

TMS320C2801, TMS320F28016, TMS320F28015

SPRS230L –OCTOBER 2003 –REVISED DECEMBER 2009		www.ti.com
eQEP:	The enhanced QEP peripheral uses a 32-bit position counter, supports low-speed
	measurement using capture unit and high-speed measurement using a 32-bit unit
	timer.
	This peripheral has a watchdog timer to detect motor stall and input error detection
	logic to identify simultaneous edge transition in QEP signals.
ADC:	The ADC block is a 12-bit converter, single ended, 16-channels. It contains two
	sample-and-hold units for simultaneous sampling.

3.2.21 Serial Port Peripherals

The 280x devices support the following serial communication peripherals:

eCAN:	This is the enhanced version of the CAN peripheral. It supports 32 mailboxes, time
	stamping of messages, and is CAN 2.0B-compliant.
SPI:	The SPI is a high-speed, synchronous serial I/O port that allows a serial bit stream of
	programmed length (one to sixteen bits) to be shifted into and out of the device at a
	programmable bit-transfer rate. Normally, the SPI is used for communications
	between the DSP controller and external peripherals or another processor. Typical
	applications include external I/O or peripheral expansion through devices such as
	shift registers, display drivers, and ADCs. Multi-device communications are
	supported by the master/slave operation of the SPI. On the 280x, the SPI contains a
	16-level receive and transmit FIFO for reducing interrupt servicing overhead.
SCI:	The serial communications interface is a two-wire asynchronous serial port,
	commonly known as UART. On the 280x, the SCI contains a 16-level receive and
	transmit FIFO for reducing interrupt servicing overhead.
I2C:	The inter-integrated circuit (I2C) module provides an interface between a DSP and
	other devices compliant with Philips Semiconductors Inter-IC bus (I2C-bus)
	specification version 2.1 and connected by way of an I2C-bus. External components
	attached to this 2-wire serial bus can transmit/receive up to 8-bit data to/from the
	DSP through the I2C module. On the 280x, the I2C contains a 16-level receive and
	transmit FIFO for reducing interrupt servicing overhead.

3.3Register Map

The 280x devices contain three peripheral register spaces. The spaces are categorized as follows:

Peripheral	These are peripherals that are mapped directly to the CPU memory bus.
Frame 0:	See Table 3-8.
Peripheral	These are peripherals that are mapped to the 32-bit peripheral bus.
Frame 1	See Table 3-9.
Peripheral	These are peripherals that are mapped to the 16-bit peripheral bus.
Frame 2:	See Table 3-10.

40 Functional Overview Copyright © 2003–2009, Texas Instruments Incorporated

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TMS320C2801 TMS320F28016 TMS320F28015