Upgrade Processing Method, Apparatus and System for CPLD

摘要

An upgrade processing method, apparatus and system for a CPLD. The upgrade processing method includes: before a CPLD is upgraded, backing up register information and a pin signal of the CPLD; executing an operation of upgrading a program of the CPLD; restoring register information and a pin signal of the CPLD according to the backed-up register information and pin signal; and after the register information and the pin signal of the CPLD are restored, releasing the pin of the CPLD. It is implemented that consistency of device statuses before and after the CPLD is upgraded can be ensured without a need to interrupt a service of a current system. Therefore, an impact on the service is prevented, and reliability of the system is improved.

主权项

1. An upgrade processing method for a complex programmable logical device (CPLD), the method comprising:
backing up register information and a pin signal of the CPLD; upgrading a program of the CPLD, wherein upgrading the program of the CPLD comprises:
loading an upgrade program of the CPLD into a flash memory of the CPLD in a background mode;locking a pin of the CPLD; andloading the upgrade program in the flash memory of the CPLD into a static random access memory (SRAM) of the CPLD; restoring register information and a pin signal of the CPLD according to the backed-up register information and pin signal after the program of the CPLD is upgraded; and releasing the pin of the CPLD after the register information and the pin signal of the CPLD are restored.