Cypress CY62158EV30 Manual de usuario descargar pdf (Pagina 13)

September 5, 2010 13

Stellaris® LM3S9B96 Development Board

Hardware Description

In addition to an LM3S9B96 microcontroller, the development board includes a range of useful

peripheral features and an integrated in-circuit debug interface (ICDI). This chapter describes how

these peripherals operate and interface to the microcontroller

LM3S9B96 Microcontroller Overview

The Stellaris LM3S9B96 is an ARM Cortex-M3-based microcontroller with 256-KB flash memory,

80-MHz operation, Ethernet, USB, EPI, SAFERTOS™ in ROM, and a wide range of peripherals.

See the LM3S9B96 Microcontroller Data Sheet (order number DS-LM3S9B96) for complete

microcontroller details.

The LM3S9B96 microcontroller is factory-programmed with a quickstart demo program. The

quickstart program resides in on-chip flash memory and runs each time power is applied, unless

the quickstart has been replaced with a user program.

Jumpers and GPIO Assignments

Each peripheral circuit on the development board is interfaced to the LM3S9B96 microcontroller

through a 0.1” pitch jumper/shunt. Figure 2-1 on page 14 shows the factory default positions of the

jumpers. The jumpers must be in these positions for the quickstart demo program to function

correctly.

The development board offers capabilities that the LM3S9B96 cannot support simultaneously due

to pin count and GPIO multiplexing limitations. For example, as configured, the board does not

support SDRAM and I

S receive (microphone or line input) functions at the same time. The

jumpers associated with I

S receive are omitted in the default configuration.

Table 2-1 lists all features and peripherals that are disconnected in the factory default

configuration. Using these peripherals requires that other peripherals be disconnected.

Appendix D, “Stellaris® LM3S9B96 Development Board Microcontroller GPIO Assignments,” on

page 37 lists alternative jumper configurations used in conjunction with some of the

StellarisWare™ example applications for this board.

See Appendix D, “Stellaris® LM3S9B96 Development Board Microcontroller GPIO Assignments,”

on page 37, for a complete list of GPIO assignments. The table lists all default and alternate

Table 2-1. Board Features and Peripherals that are Disconnected in Factory Default

Configuration

Peripheral Jumpers

S Receive (Audio Input) JP44, 45, 47, 49

Controller Area Network (CAN) JP14, 15

Ethernet Yellow Status LED (LED2) JP2

Analog 3.0V Reference JP33

CHAPTER 2

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 80 81

Sin comentarios

Cypress CY62158EV30 Manual de usuario Pagina 13