Motorola MVME1X7P User Manual

4-36

Computer Group Literature Center Web Site

MCECC Functions

Syndrome Decoding

The following table defines the syndrome bit encoding for the
Petra/MCECC ASIC. A syndrome code value of $00 indicates no error
found. All other syndrome code values denote an error. The bit in error is
decoded as shown in the table.

Table 4-4. Syndrome Bit Encoding

Bit in Error

Syndrome Code

Bit in Error

Syndrome Code

Bit 0

$4F

Bit 16

$0E

Bit 1

$4A

Bit 17

$0B

Bit 2

$52

Bit 18

$13

Bit 3

$54

Bit 19

$15

Bit 4

$57

Bit 20

$16

Bit 5

$58

Bit 21

$19

Bit 6

$5B

Bit 22

$1A

Bit 7

$5D

Bit 23

$1C

Bit 8

$23

Bit 24

$62

Bit 9

$25

Bit 25

$64

Bit 10

$26

Bit 26

$67

Bit 11

$29

Bit 27

$68

Bit 12

$2A

Bit 28

$6B

Bit 13

$2C

Bit 29

$6D

Bit 14

$31

Bit 30

$70

Bit 15

$34

Bit 31

$77

Check Bit 0

$01

Check Bit 4

$10

Check Bit 1

$02

Check Bit 5

$20

Check Bit 2

$04

Check Bit 6

$40

Check Bit 3

$08