Method for Adjusting Pull Resistors of an Electronic Module

Patent metadata

Field	Value
Publication number	US-2017199555-A1
Application number	US-201715399416-A
Country	US
Kind code	A1
Filing date	Jan 5, 2017
Priority date	Jan 12, 2016
Publication date	Jul 13, 2017
Grant date	—

Abstract

A method for adjusting a pull resistor on a contact terminal of an electronic module arranged on a printed circuit board, in particular an ASIC, after initiating a restart of the electronic module which, during a run-up process, moves the electronic module from a switched-off state into a switched-on state, wherein after initiating a restart during the run-up process from a partial circuit arranged on the electronic module and operationally ready during the run-up process, adjustment information relating to a desired adjustment of the pull resistor is retrieved from a storage unit arranged on the printed circuit board outside of the electronic module and transmitted via a contact line between the electronic module and the storage unit, where the run-up process of the electronic module is only completed after successful adjustment of the respective pull resistor based on basis the retrieved adjustment information.

First claim

What is claimed is:

1 . A method for adjusting a pull resistor on a contact terminal of an electronic module arranged on a printed circuit board after initiation of a restart of the electronic module, which during a run-up process changes the electronic module from a switched-off state into a switched-on state, the method comprising:
initiating the restart of the electronic module during the run-up process from a partial circuit which is arranged on the electronic module and which is operationally ready during the run-up process; and retrieving adjustment information relating to a desired adjustment of the pull resistor from a storage unit arranged on the printed circuit board outside of the electronic module and transmitted via a contact line between the electronic module and the storage unit, after said restart initiated the during the run-up process from the partial circuit which is arranged on the electronic module and which is operationally ready during the run-up process; wherein the run-up process of the electronic module is only completed after successful adjustment of the respective pull resistor based the retrieved adjustment information.

2 . The method as claimed in claim 1 , wherein after initiating the restart, an input/output (I/O) terminal of the storage unit connected to the contact line to the electronic module is operated as an input during the run-up process and is operated as an output after receiving a command from the partial circuit of the electronic module to transmit the adjustment information during the run-up process.

3 . The method as claimed in claim 1 , wherein after initiating the restart during the run-up process, a further contact terminal of the electronic module connected to the contact line to the storage unit is converted into an input/output (I/O) terminal.

4 . The method as claimed in claim 2 , wherein after initiating the restart during the run-up process, a further contact terminal of the electronic module connected to the contact line to the storage unit is converted into an input/output (I/O) terminal.

5 . The method as claimed in claim 1 , wherein when the adjustment information is transmitted, a test value for the data of the adjustment information is also transmitted, with which, after the adjustment information is retrieved by the electronic module, a check for error-free transmission and storage of the adjustment information is performed, wherein the run-up process is only completed with an error-free transmission and storage of the adjustment information.

6 . The method as claimed in claim 2 , wherein when the adjustment information is transmitted, a test value for the data of the adjustment information is also transmitted, with which, after the adjustment information is retrieved by the electronic module, a check for error-free transmission and storage of the adjustment information is performed, wherein the run-up process is only completed with an error-free transmission and storage of the adjustment information.

7 . The method as claimed in claim 3 , wherein when the adjustment information is transmitted, a test value for the data of the adjustment information is also transmitted, with which, after the adjustment information is retrieved by the electronic module, a check for error-free transmission and storage of the adjustment information is performed, wherein the run-up process is only completed with an error-free transmission and storage of the adjustment information.

8 . The method as claimed in claim 1 , wherein the adjustment information is transmitted encrypted and authenticated between the storage unit and the electronic module; and wherein the run-up process is only completed with an error-free decryption and authentication check of the adjustment information.

9 . The method as claimed in claim 1 , wherein the electronic module comprises an application specific integrated circuit (ASIC).

Assignees

• Siemens Ag

Inventors

• Eppensteiner Friedrich
• Ghameshlu Majid
• Matschnig Martin
• Taucher Herbert

Classifications

• H03K17/22 Primary

  Modifications for ensuring a predetermined initial state when the supply voltage has been applied (bi-stable generators H03K3/12) · CPC title

• G06F1/24 Primary

  Resetting means · CPC title

• H03K19/1776

  for memories · CPC title

• H03K19/01759

  with a bidirectional operation · CPC title

• G06F21/70

  Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer · CPC title