Introduction, Appendix a. pin connections hsmc – Altera LCD Multimedia HSMC User Manual

Page 45

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Altera Corporation

Development Board Version 1.0.

A–1

August 2008

Preliminary

Appendix A. Pin Connections

HSMC

.FPGA for the

Cyclone III Starter Board

Introduction

The section describes the HSMC pin connections for Cyclone III Starter
Board. See

Tables A–2

Special caution when building applications with the LCD Multimedia
HSMC and the Cyclone III FPGA Starter Board:

The LCD Multimedia HSMC uses the differential pair
HSMC_CLKIN pins as single-ended I/O. On the Cyclone III
Starter Board, the n and p signals for these pins are terminated
with 100 Ohm resistors (R3 and R4).

These signals correspond to single-ended I/O on the LCD
Multimedia HSMC. R3 connects HC_RX_CLK and
HC_TD_27MHZ and R4 connects HC_ADC_PENIRQ_n and
HC_TX_CLK. To avoid unwanted noise on signals, users are
advised to turn off the peripherals as shown in the

Table A–1

below.