SPRACT2 August   2020  – MONTH  AM68 , AM68 , AM68A , AM68A , AM69 , AM69 , AM69A , AM69A , DRA829J , DRA829J , DRA829V , DRA829V , TDA4VM , TDA4VM , TDA4VM-Q1 , TDA4VM-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Acronyms Used in This Document
  3. 2 Tuning Algorithm
    1. 2.1 Passing Regions
    2. 2.2 Temperature Effect on Passing Region
    3. 2.3 Algorithm

1.1 Acronyms Used in This Document

Table 1-1 Acronyms Used in This Document
Acronym Description
Ref_clk The internal clock of the OSPI controller.
OSPI Clock The clock of the OSPI bus.
DQS

Sometimes referred to as data strobe, this is a signal provided by some OSPI devices. It acts as a high speed clock for the data lanes. The controller can use a delayed DQS to sample incoming data.
DLL

Delay locked loop
PDL Programmable delay line
OSPI PHY

The part of the OSPI controller which sets up TX delay, and samples incoming data.
Read Delay

A parameter of the OSPI controller which determines which ref_clk cycle incoming data must be sampled in.
Data Eye

The period of time in which all data bits are valid. The sampling edge must occur inside the data eye for the byte to be read successfully.
OTP Optimal Tuning Point