Intel 740

Revision 0.9
11
PC SGRAM Specification
Write
Recovering
HXXXXX DSEL
NOP - Enter
row active
after Tdpl
LHHHL X NOP
NOP - Enter
row active
after Tdpl
LH L H L
BA,CA,
A8/A9
READ/
READAP
Start Read,
optional AP
9
LH L L L
BA,CA,
A8/A9
WRIT/
WRITEAP
New Write,
optional AP
L H L L L BA,CA BLKWR Block Write
L L H H L BA,RA ACT ILLEGAL 4,13
LHHLLX BST ILLEGAL
LL H L L
BA,
A8/A9
PRE/PALL ILLEGAL 4,14
L L L H L X CBR/SELF ILLEGAL 14
L L L L L Opcode MRS ILLEGAL 14
L L L L H Opcode SMRWR ILLEGAL 14
Write
recovering
with auto
precharge
HXXXXX DSEL
NOP - Enter
precharge
after Tdpl
LHHHL X NOP
NOP - Enter
precharge
after Tdpl
LH L H L
BA,CA,
A8/A9
READ/
READAP
ILLEGAL 4,9,13
Current
state
CS# RAS# CAS# WE# DSF Address Command Action Notes
LH L L L
BA,CA,
A8/A9
WRIT/
WRITEAP
ILLEGAL 4,13
L H L L H BA,CA BLKWR ILLEGAL 4,13
L L H H L BA,RA ACT ILLEGAL 4,13
LHHLLX BST ILLEGAL
LL H L L
BA,
A8/A9
PRE/PALL ILLEGAL 4,14
L L L H L X CBR/SELF ILLEGAL 14
L L L L L Op Code MRS ILLEGAL 14
L L L L H Op Code SMRWR ILLEGAL 14
Refreshing H X X X X X DSEL
NOP - Enter
idle after trc
LHHHL X NOP
NOP- Enter
idle after trc
LHLXXX
READ/
READAP
ILLEGAL 14
LHHLLX BST ILLEGAL
L L H X X X ACT/PRE/PALL ILLEGAL 14
LLLXXX
CBR/SELF/
MRS
ILLEGAL 14
Table 7. Operative Command Table
Current
state
CS# RAS# CAS# WE# DSF Address Command Action Notes