56858 View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

56858

16-bit Digital Signal Controllers

Freescale Semiconductor 

56858 Description

• Six (6) independent channels of DMA

• 8-bit Parallel Host Interface*

• Time-of-Day (TOD)

• Up to 47 GPIO

* Each peripheral I/O can be used alternately as a GPIO if not needed

1.1.4 Energy Information

• Fabricated in high-density CMOS with 3.3V, TTL-compatible digital inputs

• Wait and Stop modes available

1.2 56858 Description

The 56858 is a member of the 56800E core-based family of controllers. This device combines the

processing power of a Digital Signal Processor (DSP) and the functionality of a microcontroller with a

flexible set of peripherals on a single chip to create an extremely cost-effective solution. The low cost,

flexibility, and compact program code make this device well-suited for many applications. The 56858

includes peripherals that are especially useful for teledatacom devices; Internet appliances; portable

devices; TAD; voice recognition; hands-free devices; and general purpose applications.

The 56800E core is based on a Harvard-style architecture consisting of three execution units operating in

parallel, allowing as many as six operations per instruction cycle. The microprocessor-style programming

model and optimized instruction set allow straightforward generation of efficient, compact DSP and

control code. The instruction set is also highly efficient for C Compilers, enabling rapid development of

optimized control applications.

The 56858 supports program execution from either internal or external memories. Two data operands can

be accessed from the on-chip Data RAM per instruction cycle. The 56858 also provides two external

dedicated interrupt lines, and up to 47 General Purpose Input/Output (GPIO) lines, depending on

peripheral configuration.

The 56858 controller includes 40K words of Program RAM, 24K words of Data RAM and 1K of Boot

RAM. It also supports program execution from external memory.

This controller also provides a full set of standard programmable peripherals that include an 8-bit Parallel

Host Interface, two Enhanced Synchronous Serial Interfaces (ESSI), one Serial Peripheral Interface (SPI),

two Serial Communications Interfaces (SCI), and one Quad Timer. The Host Interface, Quad Timer, SSI,

SPI, SCI I/O and four chip selects can be used as General Purpose Input/Outputs when its primary function

is not required.

1.3 State of the Art Development Environment

• Processor ExpertTM (PE) provides a Rapid Application Design (RAD) tool that combines easy-to-use

component-based software application creation with an expert knowledge system.

• The Code Warrior Integrated Development Environment is a sophisticated tool for code navigation,

compiling, and debugging. A complete set of evaluation modules (EVMs) and development system cards

will support concurrent engineering. Together, PE, Code Warrior and EVMs create a complete, scalable

tools solution for easy, fast, and efficient development.

56858 Technical Data, Rev. 6

Freescale Semiconductor

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