Scrub Period Register Bits 15-8; Scrub Period Register Bits 7-0 - Motorola MVME172 Programmer's Reference Manual

MCECC
5

Scrub Period Register Bits 15-8

ADR/SIZ
BIT
NAME
OPER
RESET

Scrub Period Register Bits 7-0

ADR/SIZ
BIT
NAME
OPER
RESET
5-24
HITDIS This bit controls a function that is not currently used in the
MCECC.
RADATA This bit controls a function that is not currently used in the
MCECC.
RACODE This bit controls a function that is not currently used in the
MCECC.
The Scrub Period Control Register controls how often a scrub of the entire
memory is performed if the SCRBEN bit is set in the Scrub Control
Register. The time between scrubs is approximately two seconds times the
value programmed into the Scrub Period Register. The scrub period can be
programmed from once every four seconds to once every 36 hours. This
register contains bits 15-8 of the Scrub Period Register.
1st $FFF43028/2nd $FFF43128 (8-bits)
31 30 29
SBPD15 SBPD14 SBPD13 SBPD12 SBPD11 SBPD10 SBPD9 SBPD8
R/W R/W R/W
1 PLS 1 PLS 1 PLS
This register contains bits 7-0 of the Scrub Period Register.
1st $FFF4302C/2nd $FFF4312C (8-bits)
31 30
SBPD7 SBPD67
R/W R/W
1 PLS 1 PLS
28 27
R/W R/W
1 PLS 1 PLS
29 28 27
SBPD5 SBPD4 SBPD3 SBPD2 SBPD1 SBPD0
R/W R/W R/W
1 PLS 1 PLS 1 PLS
Computer Group Literature Center Web Site
26 25 24
R/W R/W R/W
1 PLS 1 PLS 1 PLS
26 25 24
R/W R/W R/W
1 PLS 1 PLS 1 PLS