EP4CE40 datasheet(217/488 Pages) ALTERA

217 / 488 page

Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices

8–53

Configuration

May 2013

Altera Corporation

Cyclone IV Device Handbook,

Volume 1

1 The .rbf used by the JRunner software driver cannot be a compressed .rbf because the

JRunner software driver uses JTAG-based configuration. During JTAG-based

configuration, the real-time decompression feature is not available.

f For more information about the JRunner software driver, refer to AN 414: JRunner

Software Driver: An Embedded Solution for PLD JTAG Configuration and the source files

on the Altera website at (www.altera.com).

Combining JTAG and AS Configuration Schemes

You can combine the AS configuration scheme with the JTAG-based configuration

(Figure 8–28). This setup uses two 10-pin download cable headers on the board. One

download cable is used in JTAG mode to configure the Cyclone IV device directly

through the JTAG interface. The other download cable is used in AS mode to program

the serial configuration device in-system through the AS programming interface. If

you try configuring the device using both schemes simultaneously, JTAG

configuration takes precedence and AS configuration terminates.

EP4CE40 Datasheet(PDF) 217 Page - Altera Corporation