Sdm Power Manager - Intel Agilex User Manual

5. Intel Agilex Power Optimization Techniques and Features
UG-20215 | 2019.04.02

5.1.2. SDM Power Manager

In Intel Agilex devices, the SmartVID feature is managed by the SDM subsystem. The
SDM subsystem is powered up after V
0.8V. The SDM Power Manager reads the SmartVID programmed value and
communicates this value to the external voltage regulator through the PMBus
interface.
Figure 9. SDM Power Manager Block Diagram
SDM Subsystem
The SDM Power Manager has the following stages:
• Initial/Shutdown stage
— Powers up V
programmed value and the device temperature.
— Configures the FPGA and switches the FPGA to user mode.
• Monitor stage
— Monitors temperature and updates V
The shutdown stage is triggered during device reconfiguration.
5.1.2.1. PMBus Master Mode
In the PMBus master mode, during the initial stage, the SDM Power Manager sets the
external voltage regulator to supply V
SmartVID programmed value and the device temperature before it starts to configure
the FPGA.
After entering user mode (in the monitor stage), the SDM Power Manager monitors
temperature changes and decides if the V
updated. If voltages require updating, the SDM Power Manager identifies the voltage
value based on the fuse values and the current temperature and sends the desired
voltage value to the voltage regulators through the PMBus (
PWRMGT_SDA
The PMBus master mode supports the multi-master mode.
Note: The PMBus master mode only supports the 1.8-V single-ended I/O standard.
Send Feedback
Temperature
Sensor, Fuse
and V to the voltage level based on the SmartVID
CC CCP
).
and V voltage levels are powered up to
CC CCP
SDM Power
Manager
and V .
CC CCP
and V voltage levels based on the
CC CCP
and V output voltage values need to be
CC CCP
®
Intel Agilex
PMBus
Voltage
Regulator
VCC and VCCP
at VID Setpoint
and
PWRMGT_SCL
™
Power Management User Guide
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