AN1924 Motorola / Freescale Semiconductor, AN1924 Datasheet - Page 2

• Manufacturer Part Number: AN1924
• Description: AN1924 Interfacing Serial LCDs to a DSP56F805s SCI and Porting Code Using the Embedded SDK
• Manufacturer: Motorola / Freescale Semiconductor

Interface Description
2.
2
Motorola’s DSP56F80x processors are DSP/MCU hybrids, which not only have the expected
capabilities of a DSP, but also the features that allow the processor to perform the functions of a
microprocessor. Additionally, the DSP56F80x family of processors offers Systems On a Chip (SOC)
technology, and, as shown in
measurements and interfacing to various devices.
The interface techniques explained here will work equally well with any member of the DSP56F80x
group of processors; this application was developed for the DSP56F805 processor.
EVM card and the external interfaces to the two available SCI modules found on the DSP56F805.
Figure 2
The intelligent LCDs will be connected to the SCI1 port.
Motorola Scalable
Controller Area Network
(MSCAN)
MUXed input 12-bit
Analog-to-Digital
Converters (ADC)
Quadrature Decoders
Pulse Width Modulator
(PWM) Module
Serial Communication
Interface (SCI) Module
Serial Peripheral Interface
(SPI) Module
Interface Description
Table 1: Peripheral Device Interfaces Found on the DSP56F80x Processors
SOC Devices
provides a closer view, centered on the DSP’s SCI1 interface, the EVM board’s J17 header.
Interfacing LCDs and Porting Code
Communication Controller implementing
CAN 2.0 A/B
Dual 4-input 12-bit ADC
Used to determine orientation of a motor
shaft
A modulation technique employed to
control various kinds of electric motors
This interface allows asynchronous
serial communications with peripheral
devices and MCUs. A “TTL” RS-232
interface.
This allows full-duplex, synchronous,
serial communication between the DSP
and peripheral devices
Table
1, has a number of on-chip capabilities to accommodate
Description
DSP56F803
DSP56F805
DSP56F807
DSP56F801
DSP56F803
DSP56F805
DSP56F807
DSP56F801
DSP56F803
DSP56F805
DSP56F807
DSP56F801
DSP56F803
DSP56F805
DSP56F807
DSP56F801
DSP56F803
DSP56F805
DSP56F807
DSP56F801
DSP56F803
DSP56F805
DSP56F807
Availability
Figure 1
shows the