XYCOM XVME-688 Redundant module

User can check the stack assignment in the window of program disassembling, Fig. 2 shows that the status of stack before FPP0 execution, system has calculated the required stack space and has reserved for the program

Single FPP 

mode For traditional MCU user who does not need parallel processing capability, PMC234/PMS234 provides single FPP mode optional to behave as traditional MCU. After single FPP mode is selected, FPP1 is always disabled and only FPP0 is active. Fig.3 shows the timing diagram for each FPP unit, FPP1 is always disabled and only FPP0 active. Please notice that wait and delay instructions are NOT supported when single FPP mode is chosen.

Program Memory Assignment 

The OTP (One Time Programmable) program memory is used to store the program instructions to be executed. All program codes for each FPP unit are stored in this OTP memory for both FPP0 and FPP1. The OTP program memory may contains the data, tables and interrupt entry. After reset, the initial address for FPP0 is 0x0 and 0x1 for FPP1. The interrupt entry is 0x10 if used and interrupt function is for FPP0 only, the last eight addresses are reserved for system using, like checksum, serial number, etc. The OTP program memory for PMC234/PMS234 is a 4Kx16 bit that is partitioned as Table 1. The OTP memory from address 0xFF8 to 0xFFF is for system using, address space from 0x002 to 0x00F and from 0x011 to 0xFF7 are user program space. The address 0x001 is the FPP1 initial address for two FPP units mode and user program for single FPP unit mode.

                                                                        

Application industry

The products can be used in the following industries: power plant, paper making, steel, mining, rubber, water supply, cement, chemical industry, glass, printing

Textile, machinery, plastics, coatings, medicine, hospitals, food, hotels, scientific research institutions

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