Cyclone® 10 GX Core Fabric and General Purpose I/Os Handbook

ID 683775
Date 7/08/2024
Public
Document Table of Contents

9.4. Enabling and Disabling IEEE Std. 1149.1 BST Circuitry

The IEEE Std. 1149.1 BST circuitry is enabled after the Cyclone® 10 GX device powers up.

To ensure that you do not inadvertently enable the IEEE Std. 1149.1 circuitry when it is not required, disable the circuitry permanently with pin connections as listed in the following table.

Table 92.  Pin Connections to Permanently Disable the IEEE Std. 1149.1 Circuitry for Cyclone® 10 GX Devices
JTAG Pins30 Connection for Disabling
TMS VCCPGM
TCK GND
TDI VCCPGM
TDO Leave open
TRST GND
30 The JTAG pins are dedicated. Software option is not available to disable JTAG in Cyclone® 10 GX devices.