4

MCECC Functions

Error Syndrome Register

ADR/SIZ

 

1st $FFF43070/2nd $FFF43170 (16-bits)

 

 

 

 

 

 

 

 

 

 

BIT

31

30

29

28

27

26

25

24

 

 

 

 

 

 

 

 

 

NAME

0

S6

S5

S4

S3

S2

S1

S0

 

 

 

 

 

 

 

 

 

OPER

R

R

R

R

R

R

R

R

 

 

 

 

 

 

 

 

 

RESET

0 PLS

0 PLS

0 PLS

0 PLS

0 PLS

0 PLS

0 PLS

0 PLS

 

 

 

 

 

 

 

 

 

S6-S0Bits SYNDROME6-0 reflect the syndrome value at the last logging of an error. The seven-bit code indicates the position of the data error. When all the bits are 0, there is no error. Note that if the logged error was non- correctable, then these bits are meaningless (refer to the Syndrome Decoding section).

Defaults Register 1

ADR/SIZ

 

1st $FFF43074/2nd $FFF43174 (8-bits)

 

 

 

 

 

 

 

 

 

 

 

BIT

31

30

29

28

27

26

25

24

 

 

 

 

 

 

 

 

 

NAME

RWB7

RWB6

FSTRD

SELI1

SELI0

RSIZ2

RSIZ1

RSIZ0

 

 

 

 

 

 

 

 

 

OPER

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

 

 

 

 

 

 

 

 

 

RESET

0 PL

V PLS

V PLS

V PLS

V PLS

V PLS

V PLS

V PLS

 

 

 

 

 

 

 

 

 

It is not recommended that non-test software write to this register.

RSIZ2-RSIZ0

Bits RSIZ2-RSIZ0 determine the size of the DRAM array that is assumed by the MCECC. They control the size as follows:

4-30

Computer Group Literature Center Web Site

Page 278
Image 278
Motorola MVME1X7P manual Error Syndrome Register, Defaults Register, RSIZ2-RSIZ0