Intel® MAX® 10 FPGA Configuration User Guide

ID 683865
Date 3/27/2023
Public
Document Table of Contents

2.2.2.6.1. Flash Region Access Control and Immutability

The Intel® MAX® 10 DD (10M40DD, 10M50DD) devices enable immutability of the flash region CFM0 when configured from CFM1.

The access permission of CFM0 is updated while the other flash region access permission remains the same as the standard Intel® MAX® 10 devices.

The JTAG secure mode and verify protect features determine the CFM operation permission. The table list the operations permitted based on the security settings.

Table 18.   CFM Permissions for Intel® MAX® 10 DD Devices
Operation JTAG Secure Mode Disabled JTAG Secure Mode Enabled
Verify Protect Disabled Verify Protect Enabled Verify Protect Disabled Verify Protect Enabled
ISP through core Illegal operation Illegal operation Illegal operation Illegal operation
ISP through JTAG pins Full access with condition 7 Program and erase only 8 No access No access
Real-time ISP through core Full access with condition 7 Program and erase only 8 No access No access
Real-time ISP through JTAG pins Full access with condition 7 Program and erase only 8 No access No access
UFM interface through core 9 Full access with condition 7 Full access with condition 7 Full access with condition 7 Full access with condition 7
7 Full access with condition:
  • Dual image configuration—full access to CFM0 is applicable when the device is configured with CFM0 image. Otherwise, no access.
  • Single image configuration—full access.
8 Program and erase only with condition:
  • Dual image configuration—program and erase only to CFM0 is applicable when the device is configured with CFM0 image. Otherwise, no access.
  • Single image configuration—program and erase only.
9 The UFM interface through core is available if you select the dual compressed image mode.