4

MCECC Functions

Scrub Prescaler Counter (Bits 7-0)

This register reflects the current value in the scrub prescaler bits 7-0.

ADR/SIZ

 

 

1st $FFF43040/2nd $FFF43140 (8-bits)

 

 

 

 

 

 

 

 

 

 

 

BIT

31

30

 

29

28

27

26

25

24

 

 

 

 

 

 

 

 

 

 

NAME

SPS7

SPS6

 

SPS5

SPS4

SPS3

SPS2

SPS1

SPS0

 

 

 

 

 

 

 

 

 

 

OPER

R/W

R/W

 

R/W

R/W

R/W

R/W

R/W

R/W

 

 

 

 

 

 

 

 

 

 

RESET

0 PLS

0 PLS

 

0 PLS

0 PLS

0 PLS

0 PLS

0 PLS

0 PLS

 

 

 

 

 

 

 

 

 

 

Scrub Timer Counter (Bits 15-8)

This read/write register is the Scrub Timer counter. If scrubbing is enabled and the Scrub Period register is non-zero, the Scrub Timer counter increments approximately once every two seconds until it matches the value programmed into the Scrub Period register, at which time it clears and resumes incrementing. Writes to this address update the Scrub Timer counter and reads to this address yield the counter’s value. The ability to read and write this register is provided for test purposes. Programming this counter is not recommended. This register reflects the current value in the Scrub Timer counter bits 15-8.

ADR/SIZ

 

 

1st $FFF43044/2nd $FFF43144 (8-bits)

 

 

 

 

 

 

 

 

 

 

 

BIT

31

30

 

29

28

27

26

25

24

 

 

 

 

 

 

 

 

 

 

NAME

ST15

ST14

 

ST13

ST12

ST11

ST10

ST9

ST8

 

 

 

 

 

 

 

 

 

 

OPER

R/W

R/W

 

R/W

R/W

R/W

R/W

R/W

R/W

 

 

 

 

 

 

 

 

 

 

RESET

0 PLS

0 PLS

 

0 PLS

0 PLS

0 PLS

0 PLS

0 PLS

0 PLS

 

 

 

 

 

 

 

 

 

 

4-24

Computer Group Literature Center Web Site

Page 272
Image 272
Motorola MVME1X7P manual Scrub Timer Counter Bits