參數(shù)資料
型號(hào): MMKR-29C516E-31
廠商: ATMEL CORP
元件分類(lèi): 算術(shù)邏輯單元
英文描述: CMOS SERIES, 16-BIT ERROR DETECT AND CORRECT CKT, TRUE OUTPUT, PQFP100
封裝: MQFP-100
文件頁(yè)數(shù): 13/16頁(yè)
文件大?。?/td> 94K
代理商: MMKR-29C516E-31
29C516E
6
Rev. D (09 Dec. 97)
6. Syndrome Decoding
The syndrome decoder generates the error flags CERR
(Correctable ERRor) and NCERR (Non–Correctable
ERRor). If a correctable error occurs, the 29C516E
EDAC provides corrected data to the user. The inputs are
the 8 syndrome bits from the syndrome generator, the 16
data bits from the memory and the control signal N22.
N22 signal controls if 22 or 24 bits shall be decode from
the entire memory word.
Table 4: 6–Bit Syndrome Word to Bit–In–Error (N22=”1”)
Hex
0
1
2
3
Syndrome Bit SY
[..]
5
0
1
4
0
1
0
1
Hex
3
2
1
0
0
0
N.E.D
MC4
MC5
D
1
0
1
MC0
D
MD7
2
0
1
0
MC1
D
MD11
3
0
1
D
MD8
MD6
D
4
0
1
0
MC2
D
MD15
5
0
1
0
1
D
MD5
MD12
D
6
0
1
0
D
MD9
M
D
7
0
1
M
D
M
8
1
0
MC3
D
M
9
1
0
1
D
M
MD13
D
A
1
0
1
0
D
MD10
MD14
D
B
1
0
1
MD4
D
M
C
1
0
D
MD2
MD3
D
D
1
0
1
MD0
D
M
E
1
0
MD1
D
M
F
1
D
M
D
Note :
N.E.D = No Errors Detected
MDx = Memory Data Bit–In–Error
MCx = Memory Check Bit–In–Error
D = Double–Bit–In–Error Detected
M = Multi–Bit–In–Error Detected
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