AN 763: Intel® Arria® 10 SoC Device Design Guidelines

ID 683192
Date 5/17/2022
Public
Document Table of Contents

3.4.2.3. I/O Bank, 2J (Data)

The Arria 10 EMIF for HPS IP core uses I/O Bank 2J for all non-ECC DQ/DQS data lane signal groups for 16-, 24-, 32-, 40-bit interfaces. For 64-, 72-bit interfaces, the lower four non-ECC DQ/DQS data lane signal groups are located in this bank.

GUIDELINE: I/O pins in lanes NOT utilized by the Arria 10 EMIF for HPS IP are available as FPGA GPIO.

For 16-, 24-bit interfaces, the Arria 10 EMIF for HPS IP utilizes two of the I/O lanes in I/O Bank 2J for the non-ECC DQ/DQS data lane signals. The other two I/O lanes in I/O Bank 2J are available to the FPGA fabric as general purpose I/O. FPGA GPIO signals assigned to pins in unused lanes support I/O standards compatible with I/O Bank 2J’s VCCIO and VREF supply levels, which are dictated by the external SDRAM’s signaling standard.

GUIDELINE: Unused pins in lanes that ARE utilized by the Arria 10 EMIF for HPS IP are available as FPGA GPI.

In I/O lanes utilized by the Arria 10 EMIF for HPS IP core for DQ/DQS data lane signals in I/O Bank 2J, any unused pins are available to the FPGA fabric as general purpose inputs-only. FPGA GPI signals assigned to unused pin locations in these utilized lanes support I/O standards compatible with I/O Bank 2J’s VCCIO and VREF supply levels, which are dictated by the external SDRAM’s signaling standard.