IDT49C465/A
32-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PRIMARY DATA PATH vs. MEMORY CONFIGURATION
SEPARATE I/O MEMORIES:
COMMON I/O MEMORIES:
1. Checkbit Generation
Write New Word to Memory
CPU
SD MD
P
CBO
IDT49C465
CBI
DIN
MAIN
MEMORY
DOUT
CHECKBIT
MEMORY
1. Checkbit Generation
Write New Word to Memory
CPU
SD MD
P
IDT49C465
CBO
CBI
I/O
MAIN
MEMORY
CHECKBIT
MEMORY
2. Data Correction
Read Memory Word
CPU
CORRECTED
SD MD
P
CBO
IDT49C465
CBI
DIN
MAIN
MEMORY
DOUT
CHECKBIT
MEMORY
2. Data Correction
Read Memory Word
CORRECTED
CPU
SD MD
P
IDT49C465
CBO
CBI
I/O
MAIN
MEMORY
CHECKBIT
MEMORY
3. Memory Generation
Re-write Corrected Word to Memory
CPU
CORRECTED
SD MD
P
CBO
IDT49C465
CBI
DIN
MAIN
MEMORY
DOUT
CHECKBIT
MEMORY
3. Memory Generation
Re-write Corrected Word to Memory
CORRECTED
CPU
SD MD
P
IDT49C465
CBO
CBI
CORRECTED
I/O
MAIN
MEMORY
CHECKBIT
MEMORY
2552 drw 13
11.7
11