FXLC95000CL datasheet(7/38 Pages) FREESCALE

7 / 38 page

• I2C master interface

• Queued SPI master interface (This interface has both send and receive FIFOs of

size 16 bit wordlength and 4 words depth each. No DMA.)

• I2C or SPI slave interface

• System Integration Module (SIM)

• Clock-generation module

The slave interfaces (either SPI or I2C) operate independently of the ColdFire CPU

subsystem. This allows the host processor to access the slave interface at any time,

including while the FXLC95000CL's CPU is in low-power, deep-sleep mode. Host

access can be set to trigger a FXLC95000CL CPU wakeup.

4.1.1 ROM content and usage

There are several classes of functions stored in ROM:

• A Boot program, including ROM-based slave port command interpreter.

• A collection of utilities which can be invoked via the ROM-based slave port

command interpreter.

• ROM functions which are callable from user code using the call_trap() function.

For a detailed description of these items, refer to the FXLC95000CL Hardware

Reference Manual ROM chapter.

The FXLC95000CL device boots from a standard routine in ROM. This boot function

is responsible for a number of initialization steps (in particular the state of GPIO8 pin

is checked in order to select either I2C or SPI interface as serial communication Slave

port), before transferring control if desired to user code in flash memory (when the

Boot from Flash bit-field has been set).

The ROM contains a simple command interpreter capable of running a number of

ROM-based utility and test functions. These ROM-based functions support flash

memory programming and erasing, the protection of flash, the device Reset, and the

reading of device information. They also provide useful error codes.

The FXLC95000CL platform is supplied with a fully erased flash memory. Users can

take advantage of the ROM-based flash controller and slave port command-line

interpreter to communicate with a virgin device and program custom firmware into

the flash array.

General Description

Xtrinsic FXLC95000CL Intelligent, Motion-Sensing Platform, Rev1.2, 8/2013.

Freescale Semiconductor, Inc.

FXLC95000CL Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc