Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 7/19/2024
Public

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8.1. Reset Manager Differences Among Intel SoC Device Families

The following table shows the differences of the HPS reset manager between various device families.

Table 324.  HPS Reset Manager Differences
Reset Manager Feature

Cyclone® V SoC,

Arria® V SoC
Arria® 10 SoC

Stratix® 10 SoC,

Intel® Agilex™ 7

F-Series/I-Series/

M-Series SoC

Intel Agilex® 5 E-Series/D-Series SoC
Cold reset Sources
  • POR monitor45
  • nPOR pin
  • FPGA fabric
  • FPGA CB 46 and scan manager
  • Software cold reset request
  • Security manager
  • nPOR pin
  • FPGA fabric
  • FPGA CB
  • Software cold reset request
  • SDM
  • HPS cold reset pin 47
  • HPS mailbox request to SDM
  • System watchdogs
  • SDM
  • HPS cold reset pin47
  • HPS or FPGA mailbox request to SDM
  • System watchdogs
Warm reset sources
  • nRST pin
  • FPGA fabric
  • Software warm reset request
  • MPU watchdogs
  • System watchdogs
  • nRST pin
  • FPGA fabric
  • Software warm reset request
  • MPU watchdogs
  • System watchdogs
  • SDM
  • FSBL 48 or software warm reset request
  • System watchdogs
  • (not supported) nRST pin
  • (not supported) FPGA mailbox message to SDM
  • SDM
  • FSBL48 or software warm reset request
  • System watchdogs
  • (not supported) nRST pin
  • (not supported) FPGA mailbox message to SDM
MPU/CPU cold reset ---- ---- COLDMODRST register CPUINRESET register
MPU/CPU warm reset ---- ----
  • MPUMODRST register
  • Software request via RMR_EL3[RR] register
Software request via RMR_EL3[RR] register
Debug reset resources
  • DAP 49 request
  • FPGA fabric
  • DAP request
  • FPGA fabric
  • DAP reset
  • DAP reset
RAM-clearing reset No Yes Handled by SDM Handled by SDM
Anti-tamper reset No Yes Handled by SDM Handled by SDM
45 Power-on reset
46 Control block
47 One of the dedicated SDM I/Os can be configured to work as an HPS cold reset pin
48 First-stage boot loader
49 Debug access port