SM5859AF Datasheet, PDF (26/33 Pages) Nippon Precision Circuits Inc – compression and non compression type antishock memory controller

SM5859AF
Selecting compression mode
Even when the compression mode in selected with
the 85H command during shock-proof operation,no
malfunction occurs.
The compression mode change is not performed
immediately after input of the 85H command, but it
is performed at the following timing.
After changing the mode, zero data of one block is
output.
YMLD
When 85H generated
WA CAS ^3FE
3FF
001
RA CAS 3FD
3FE
Encode compression mode
A
Decode compression mode
A
ZSRDATA
(note) CAS-000 is connect data.
002
003
004
005
3FF
001
002
B
B
NIPPON PRECISION CIRCUITS-26