Jtag chain, Jtag chain –6 – Altera Cyclone V GT FPGA User Manual

Page 28

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6–6

Chapter 6: Board Test System

Using the Board Test System

Cyclone V GT FPGA Development Kit

September 2014

Altera Corporation

User Guide

PSS

—Displays the MAX V PSS register value. Refer to

Table 6–1

for the list of

available options.

SRST

—Resets the system and reloads the FPGA with a design from flash memory

based on the other MAX V register values. Refer to

Table 6–1

for more information.

1

Because the System Info tab requires that a specific design is running in the FPGA at
a specific clock speed, writing a 0 to SRST

or changing the PSO value can cause the

Board Test System to stop running.

JTAG Chain

This control shows all the devices currently in the JTAG chain. The Cyclone V GT
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 (J13), the On-Board
USB-Blaster II is disabled.

1

JTAG DIP switch bank (SW3) selects which interfaces are in the chain. Refer to

Table 4–1 on page 4–3

for detailed settings.

f

For details on the JTAG chain, refer to the

Cyclone V GT FPGA Development Board

Reference Manual.

For USB-Blaster II configuration details, refer to the

On-Board

USB-Blaster II

page.

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