Remote Update Intel® FPGA IP User Guide

ID 683695
Date 8/16/2022
Public

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1.4.6. Remote Update Operation

The operation defined in the Remote Update Operation column should only be performed in the corresponding master state machine (MSM) mode.

Table 17.   Cyclone® IV and Intel® Cyclone® 10 LP Devices Remote Update Operation
Note: read_source specifies whether a parameter value is read from the current or a previous state. For more information, refer to Table 18.
read_ param write_ param read_source param Remote Update Operation data_out width (bits) MSM Mode
1 0 [00] [000] Master State Machine Current State Mode (Read Only)
  • 00—Factory mode
  • 01—Application mode
  • 11—Application mode with master state machine user watchdog timer enabled
2 Factory or Application
1 0 [00] [100] Read factory boot address 24 Factory
1 0 [01] [100]

Read Past Status 1 boot address.

For more information, refer to Figure 11.

24 Factory
1 0 [01] [111]

Read Past Status 1 reconfiguration trigger condition source.

For more information, refer to Figure 11.

5 Factory
1 0 [10] [100]

Read Past Status 2 boot address.

For more information, refer to Figure 11.

24 Factory
1 0 [10] [111]

Read Past Status 2 reconfiguration trigger condition source

For more information, refer to Figure 11.

5 Factory
1 0 [01] [010] Read current application mode watchdog value 29 Application
1 0 [01] [011] Read current application mode watchdog enable 1 Application
1 0 [10] [100] Read current application mode boot address 24 Application
0 1 [00] [001]

Write the early confdone check bit.

All parameters can be written in factory mode only.

1 Factory
0 1 [00] [010]

Write the watchdog time-out value.

All parameters can be written in factory mode only.

12 Factory
0 1 [00] [011]

Write the watchdog enable bit.

All parameters can be written in factory mode only.

1 Factory
0 1 [00] [100]

Write application boot address.

All parameters can be written in factory mode only.

22 Factory
0 1 [00] [110] Write to force the internal oscillator as startup state machine clock. All parameters can be written in factory mode only. 1 Factory
1 0 [11] [001] Read the early confdone check bits 1 Factory
1 0 [11] [010] Read watchdog time-out value 12 Factory
1 0 [11] [011] Read watchdog enable bit 1 Factory
1 0 [11] [100] Read boot address 22 Factory
1 0 [11] [110] Read to check whether the internal oscillator is set as startup state machine clock 1 Factory

read_source

The following table lists the details for read_source. read_source specifies whether a parameter value is read from the current or a previous state. When you trigger the read operation, all contents in the status register or input register latched to the data_out node in the Remote Update Intel® FPGA IP core.

Table 18.  read_source
read_source Description
00 Current state contents in status register
01 Previous state register 1 contents in status register
10 Previous state register 2 contents in status register
11 Current contents is in input register

The previous state register 1 reflects the current application configuration and the previous state register 2 reflects the previous application configuration.

Figure 11. State Register