IDT49C465APQFB Ver la hoja de datos (PDF) - Integrated Device Technology
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IDT49C465APQFB Datasheet PDF : 38 Pages
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IDT49C465/A
32-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DETAILED DESCRIPTION — 32-BIT CONFIGURATION
32-BIT MODIFIED HAMMING CODE — CHECKBIT ENCODING CHART(1)
Generated
Participating Data Bits
Checkbits
CB0
Parity
Even (XOR)
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
X
X
XXXX
X
X
CB1
Even (XOR)
XXX
X
X
X
X
X
CB2
Odd (XNOR)
X
XX
X
XX
X
X
CB3
Odd (XNOR)
XX
XXX
XXX
CB4
Even (XOR)
XXXXXX
XX
CB5
Even (XOR)
XXXXXXXX
CB6
Even (XOR)
XXXXXXXX
2552 tbl 10
Generated
Checkbits
CB0
Parity
Even (XOR)
Participating Data Bits
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
XXX
X
X
XX
X
CB1
Even (XOR)
XXX
X
X
X
X
X
CB2
Odd (XNOR)
X
XX
X
XX
X
X
CB3
Odd (XNOR)
XX
XXX
XXX
CB4
Even (XOR)
XXXXXX
XX
CB5
Even (XOR)
CB6
Even (XOR)
XXXXXXXX
XXXXXXXX
NOTE:
2552 tbl 11
1. The table indicates the data bits participating in the checkbit generation. For example, checkbit C0 is the Exclusive-OR function of the 16 data input bits
marked with an X.
11.7
17
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