ACS630D Intersil Corporation, ACS630D Datasheet - Page 2

• Manufacturer Part Number: ACS630D
• Description: Radiation Hardened Edac ( Error Detection And Correction Circuit )
• Manufacturer: Intersil Corporation

Function Tables
Control Functions
Check Word Generation
NOTE: The six check bits are parity bits derived from the matrix of data bits as indicated by “x” for each bit
Error Syndrome Codes
Error Functions
SYNDROME
ERROR
MEMORY
CODE
WRITE
CYCLE
READ
READ
READ
CB0
CB1
CB2
CB3
CB4
CB5
CHECKWORD BIT
16-BIT DATA
TOTAL NUMBER OF ERRORS
CB0
CB1
CB2
CB3
CB4
CB5
0
1
0
1
2
0
H
H
H
0
L
L
L
High
High
Low
Low
S1
H
H
H
CONTROL
1
L
L
L
H
H
H
2
L
L
L
High
High
Low
Low
S0
6-BIT CHECKWORD
H
H
H
3
L
L
L
X
X
X
0
H
H
H
4
L
L
L
Generates Checkword
Read Data and Check-
word
Latch and Flag Error
Correct Data Word and
Generate Syndrome Bits
X
X
X
1
0
0
1
1
0
2
H
H
H
5
L
L
L
EDAC FUNCTION
X
X
X
2
H
H
H
6
L
L
L
H
H
H
7
L
L
L
X
X
X
3
DB
H
H
H
8
L
L
L
X
X
X
4
ACS630MS
H
H
H
9
L
L
L
Input Data
Input Data
Latch Data
Output Corrected
Data
ERROR LOCATIONS
X
X
X
5
High
High
High
High
High
10
SEF
Low
H
H
H
L
L
L
2
DATA I/O
11
H
H
H
L
L
L
X
X
X
6
16-BIT DATA WORD
ERROR FLAGS
12
H
H
H
L
L
L
X
X
X
7
13
H
H
H
L
L
L
X
X
X
8
14
H
H
H
L
L
L
Output Checkword
Input Checkword
Latch Checkword
Output Syndrome
Bits
15
CHECKWORD
H
H
H
L
L
L
X
X
X
9
DEF
High
High
High
Low
Low
Low
H
H
H
H
H
0
L
10
X
X
X
H
H
H
H
H
1
L
11
X
X
X
H
H
H
H
H
2
L
CB
Spec Number
H
H
H
H
H
3
L
DATA CORRECTION
12
Enabled
Enabled
X
X
X
Low
Low
SEF
Not Applicable
ERROR FLAGS
H
H
H
H
H
4
L
Correction
Correction
13
Interrupt
Interrupt
Interrupt
X
X
X
H
H
H
H
H
5
L
14
Enabled
Enabled
X
X
X
ERROR
Low
Low
DEF
518781
NO
H
H
H
H
H
H
15
X
X
X