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AR# 66171

Zynq-7000 AP SoC ZC706 Evaluation Kit - Rev 2.0 - POR calculation in schematic is not accurate

Description

The reset circuitry for the processing system of the ZC706 is described on page 15 of the ZC706 rev 2.0 schematics.

This shows C6 as a 5600 pF capacitor, and includes a note that the POR delay is 13.2 ms. Is this correct?

Solution

On the ZC706 Rev 2.0, C6 does have the value 5600 pF (this can be confirmed in the Build of Materials for that revision of the kit).

The C6 POR delay calculation, however uses the value 3300 pF. 

This is incorrect. The correct calculation, using the C6 = 5600 pF is:

C6 = 5600pF, POR delay = 22.4 ms

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
51899 Zynq-7000 AP SoC ZC706 Evaluation Kit - Known Issues and Release Notes Master Answer Record N/A N/A
AR# 66171
Date Created 12/09/2015
Last Updated 12/21/2015
Status Active
Type General Article
Boards & Kits
  • Zynq-7000 All Programmable SoC ZC706 Evaluation Kit