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Jtag chain, Jtag chain –4 – Altera Cyclone V SoC User Manual

Page 22

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5–4

Chapter 5: Board Test System

Using the Board Test System

Cyclone V SoC Development Kit

November 2013

Altera Corporation

User Guide

JTAG Chain

The JTAG chain control shows all the devices currently in the JTAG chain. The
Cyclone V device is always the first device in the chain. The JTAG chain is normally
mastered by the On-board USB-Blaster II.

1

If you plug in an external USB-Blaster cable to the JTAG header (J23), the On-Board
USB-Blaster II is disabled.

1

JTAG DIP switch bank (SW4) selects which interfaces are in the chain. Refer to

Table 3–3 on page 3–4

for detailed settings.

f

For details on the JTAG chain, refer to the

Cyclone V SoC Development Board Reference

Manual.

For USB-Blaster II configuration details, refer to the

On-Board USB-Blaster II

page.