Cyclone V Device Datasheet

ID 683801
Date 5/23/2023
Public
Document Table of Contents

OCT Calibration Accuracy Specifications

If you enable on-chip termination (OCT) calibration, calibration is automatically performed at power up for I/Os connected to the calibration block.

Table 9.  OCT Calibration Accuracy Specifications for Cyclone® V DevicesCalibration accuracy for the calibrated on-chip series termination (RS OCT) and on-chip parallel termination (RT OCT) are applicable at the moment of calibration. When process, voltage, and temperature (PVT) conditions change after calibration, the tolerance may change.
Symbol Description Condition (V) Calibration Accuracy Unit
–C6 –I7, –C7 –C8, –A7
25-Ω RS Internal series termination with calibration (25-Ω setting) VCCIO = 3.0, 2.5, 1.8, 1.5, 1.2 ±15 ±15 ±15 %
50-Ω RS Internal series termination with calibration (50-Ω setting) VCCIO = 3.0, 2.5, 1.8, 1.5, 1.2 ±15 ±15 ±15 %
34-Ω and 40-Ω RS Internal series termination with calibration (34-Ω and 40-Ω setting) VCCIO = 1.5, 1.35, 1.25, 1.2 ±15 ±15 ±15 %
48-Ω, 60-Ω, and 80-Ω RS Internal series termination with calibration (48-Ω, 60-Ω, and 80-Ω setting) VCCIO = 1.2 ±15 ±15 ±15 %
50-Ω RT Internal parallel termination with calibration (50-Ω setting) VCCIO = 2.5, 1.8, 1.5, 1.2 –10 to +40 –10 to +40 –10 to +40 %
20-Ω, 30-Ω, 40-Ω,60-Ω, and 120-Ω RT Internal parallel termination with calibration (20-Ω, 30-Ω, 40-Ω, 60-Ω, and 120-Ω setting) VCCIO = 1.5, 1.35, 1.25 –10 to +40 –10 to +40 –10 to +40 %
60-Ω and 120-Ω RT Internal parallel termination with calibration (60-Ω and 120-Ω setting) VCCIO = 1.2 –10 to +40 –10 to +40 –10 to +40 %
25-Ω RS_left_shift Internal left shift series termination with calibration (25-Ω RS_left_shift setting) VCCIO = 3.0, 2.5, 1.8, 1.5, 1.2 ±15 ±15 ±15 %