Agilex™ 7 Clocking and PLL User Guide: F-Series and I-Series

ID 683761
Date 4/01/2024
Document Table of Contents

6.3. IOPLL Reconfig IP Core Reconfiguration Modes

The IOPLL Reconfig IP core has four functional reconfiguration modes. The reconfiguration operation mode is based on the setting in the mgmt_address[9:8] bit.

Table 16.   IOPLL Reconfig IP Core Reconfiguration Modes
Reconfiguration Mode mgmt_address[9:8]
.mif streaming reconfiguration 2'b 00
Advanced mode reconfiguration 2'b 01
Clock gating reconfiguration 2'b 10
Dynamic phase shift reconfiguration 2'b 11

After performing dynamic reconfiguration on the I/O PLL that changes the M counter, N counter, bandwidth setting, or charge pump current, the I/O PLL must be recalibrated. For .mif streaming reconfiguration, the recalibration is done automatically. For advanced mode reconfiguration, you must manually trigger the recalibration of the I/O PLL. Recalibration is not needed for clock gating and dynamic phase shift reconfiguration.