There are couple for things under this topics. RAR: Redundancy Address Register? RDR: Redundancy Data Register? Fuse programming after power on of the chip. Word redundancy concept. A HDFR library (HDFR, High Density Fault Repair) provides a flexible word redundancy concept consisting in VHDL wrapper featuring real-time replacement of faulty memory address locations. The location of the faulty address is detected during production testing and repaired by using fuses.
Until now this concept was used for SPRAMs (Single Port RAMs) but now HDFR for ROMs is also there.
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There are couple for things under this topics.
RAR: Redundancy Address Register?
RDR: Redundancy Data Register?
Fuse programming after power on of the chip.
Word redundancy concept. A HDFR library (HDFR, High Density Fault Repair) provides a flexible word redundancy concept consisting in VHDL wrapper featuring real-time replacement of faulty memory address locations. The location of the faulty address is detected during production testing and repaired by using fuses.
Until now this concept was used for SPRAMs (Single Port RAMs) but now HDFR for ROMs is also there.
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