Intel® Arria® 10 Device Datasheet

ID 683771
Date 2/14/2022
Document Table of Contents

DCLK-to-DATA[] Ratio (r) for FPP Configuration

Fast passive parallel (FPP) configuration requires a different DCLK-to-DATA[] ratio when you turn on encryption or the compression feature.

Depending on the DCLK-to-DATA[] ratio, the host must send a DCLK frequency that is r times the DATA[] rate in byte per second (Bps) or word per second (Wps). For example, in FPP ×16 where the r is 2, the DCLK frequency must be 2 times the DATA[] rate in Wps.

Table 78.  DCLK-to-DATA[] Ratio for Intel® Arria® 10 DevicesYou cannot turn on encryption and compression at the same time for Intel® Arria® 10 devices.
Configuration Scheme Encryption Compression DCLK-to-DATA[] Ratio (r)
FPP (8-bit wide) Off Off 1
On Off 1
Off On 2
FPP (16-bit wide) Off Off 1
On Off 2
Off On 4
FPP (32-bit wide) Off Off 1
On Off 4
Off On 8