Intel® Agilex™ Power Management User Guide

ID 683373
Date 9/06/2022
Public
Document Table of Contents

5.1.4.1.2. Power Management and VID Parameters

You can use the following parameters to configure the Power Management and VID interface if the VID operation is in the PMBus Master mode.
Table 24.  Power Management and VID Parameters
Parameters Value Description
Bus speed mode 13 100 KHz Bus speed mode of PMBus interface when operating in the PMBus Master mode.
400 KHz
Slave device type13 ISL682XX

Supported device types.

Intel® recommends you to use one of the slave device type listed in the drop-down menu that has been tested with the Intel® FPGA tools. If you are not using one of the slave device type listed in the drop-down menu, select Other option. When you select Other option, refer to Table: SmartVID Regulator Requirements, Table: Supported Voltage Output Format for Intel® Agilex™ Devices with –V, –E, and –X Power Options, and Table: Supported Commands for the PMBus Master Mode for the voltage regulator requirements details.

LTC3888
LTM4677
Other
Device address in PMBus Slave mode14 7-bit hexadecimal value Device address in the PMBus Slave mode.
Number of slave device 1 to 7, or All Indicates the number of voltage regulator in the system.
Slave device_0 address13 7-bit hexadecimal value

External power regulator address.

This parameter must be non-zero when you are using the PMBus Master mode.

Slave device_1 address13 7-bit hexadecimal value External power regulator address.
Slave device_2 address13 7-bit hexadecimal value External power regulator address.
Slave device_3 address13 7-bit hexadecimal value External power regulator address.
Slave device_4 address13 7-bit hexadecimal value External power regulator address.
Slave device_5 address13 7-bit hexadecimal value External power regulator address.
Slave device_6 address13 7-bit hexadecimal value External power regulator address.
Slave device_7 address13 7-bit hexadecimal value External power regulator address.
Voltage output format13 Direct format

The voltage output format when the operation mode is PMBus Master.

If the voltage output format is the Direct format, you must set the following parameters:

  • Direct format coefficient m
  • Direct format coefficient b
  • Direct format coefficient R

If the voltage regulator is the Linear format, you must set the Linear format N parameter. 15

For more information about the parameters, refer to your selected voltage regulator data sheet.

For all voltage output format, you must also select the correct "translated voltage output unit".

Linear format
Direct format coefficient m13 Signed integer: -32768 to 32767 Direct format coefficient m of the slave device type when the operation mode is PMBus Master.
Direct format coefficient b13 Signed integer: -32768 to 32767 Direct format coefficient b of the slave device type when the operation mode is PMBus Master.
Direct format coefficient R13 Signed integer: -128 to 127 Direct format coefficient R of the slave device type when the operation mode is PMBus Master.
Linear format N13 Signed integer: –16 to 15 Output voltage command when the voltage output format is set to the Linear format.
Translated voltage value unit13 millivolts Indicates the translated output voltage is in millivolts (mV) or volts (V).
volts
Enable PAGE command13 Enable By enabling the PAGE command, the FPGA PMBus Master uses the PAGE command to set all the output channels (0xFF) on registered regulator modules to respond to VOUT_COMMAND. If only specified output channels on registered regulator modules must respond to VOUT_COMMAND, enter the corresponding page value (0x00 – 0xFF).
Disable
13 This parameter is used for the PMBus Master mode.
14 This parameter is used for the PMBus Slave mode.
15 N is the exponent of a 5-bit two's compliment integer.

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