Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 7/19/2024
Public

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5.15.1. I/O Pin Multiplexing Differences Among Intel SoC Device Families

The available I/Os on SoC devices are divided into the following categories:

  • Dedicated function: Each I/O has only one function and cannot be used for other purposes.
  • Dedicated I/O with loaner capability: The I/Os are primarily used by the HPS, but individual I/Os can be used by the FPGA if the HPS is not using them.
  • Dedicated I/O: The I/Os can be used only by the HPS. The pins are not accessible to logic in the FPGA.
  • Shared I/O: The I/Os can be used by either the HPS or the FPGA. These pins are used by high-speed peripherals such as EMAC and USB.
  • FPGA I/O: These I/Os can only be used by the FPGA. Slow speed peripherals can be routed through the FPGA fabric and assigned to FPGA I/O.
Table 287.  HPS I/O Pin Multiplexing Differences
HPS I/O Pin Multiplexing 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
Reset pins 3 dedicated functions 2 dedicated functions Choose one of the available SDM optional pins Choose one of the available SDM optional pins
Clock pins 2 dedicated functions 1 dedicated function Choose one of the 48 dedicated I/Os Choose one of the 48 dedicated I/Os
JTAG pins

5 dedicated pins

JTAG interface is independent of FPGA JTAG interfaces

Chained internally into FPGA JTAG interface

4 optional pins from the 48 dedicated I/Os

Independent or chained internally into FPGA JTAG interface

4 optional pins from the 48 dedicated I/Os

Independent or chained internally into FPGA JTAG interface

Peripheral pins

Cyclone V SoC: Up to 67 dedicated I/Os with loaner capability

Arria V SoC: Up to 94 dedicated I/Os with loaner capability

14 dedicated I/Os 26

48 shared I/Os

48 dedicated I/Os (including pins used for clock and JTAG)

26

48 dedicated I/Os (including pins used for clock and JTAG)

26
Supported voltage

3.3V

2.0V

2.5V

1.8V

1.5V

3.0V

2.5V

1.8V

1.8V 1.8V
26 Does not support loaner capability.