idt49c465apqfb Integrated Device Technology, idt49c465apqfb Datasheet - Page 17

• Manufacturer Part Number: idt49c465apqfb
• Description: 32-bit Flow-thru Error Detection Correction Unit
• Manufacturer: Integrated Device Technology

IDT49C465/A
32-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT
DETAILED DESCRIPTION — 32-BIT CONFIGURATION
32-BIT MODIFIED HAMMING CODE — CHECKBIT ENCODING CHART
NOTE:
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.
Generated
Generated
Checkbits
Checkbits
CB0
CB1
CB2
CB3
CB4
CB5
CB6
CB0
CB1
CB2
CB3
CB4
CB5
CB6
Odd (XNOR)
Odd (XNOR)
Odd (XNOR)
Odd (XNOR)
Even (XOR)
Even (XOR)
Even (XOR)
Even (XOR)
Even (XOR)
Even (XOR)
Even (XOR)
Even (XOR)
Even (XOR)
Even (XOR)
Parity
Parity
16
X
X
X
X
X
X
X
X
0
17
1
X
X
X
X
X
X
18
X
X
X
X
X
X
2
19
X
X
X
X
X
X
3
20
X
X
X
X
X
X
X
X
4
11.7
21
X
X
X
X
X
X
5
Participating Data Bits
Participating Data Bits
22
X
X
X
X
X
X
X
X
6
MILITARY AND COMMERCIAL TEMPERATURE RANGES
(1)
23
X
X
X
X
X
X
X
X
7
24
X
X
X
8
X
X
X
25
X
X
X
X
X
X
9
10
26
X
X
X
X
X
X
X
X
11
27
X
X
X
X
X
X
12
28
X
X
X
X
X
X
X
X
13
29
X
X
X
X
X
X
X
X
14
30
X
X
X
X
X
X
2552 tbl 10
2552 tbl 11
17
31
15
X
X
X
X
X
X
X
X