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SAA7380 Datasheet, PDF (37/60 Pages) NXP Semiconductors – Error correction and host interface IC for CD-ROM ELM
Philips Semiconductors
Error correction and host interface IC for
CD-ROM (ELM)
SYMBOL
PARAMETER
CONDITIONS
DRAM interface timing; see Figs 11 and 12; note 2
tRC
tPC
tCAC
tRAC
tOFF
tRHCP
read or write cycle period
page mode cycle time
access time from CAS
access time from RAS
output disable time from CAS
RAS hold time from CAS precharge
page mode
tCAA
column address access
tRP
RAS HIGH time
tRAS
RAS LOW time
tRSH
RAS hold time
tCAS
CAS LOW time
tCSH
CAS hold time
tCP
CAS HIGH pulse width
tCRP
delay CAS HIGH to RAS
tRCD
RAS to CAS delay time
tRAD
RAS to column address delay
tASR
row address set-up time
tRAH
row address hold time
tASC
column address set-up time
tCAH
column address hold time
tAR
column address hold time from
RAS LOW
tRAL
tRCS
tRCH
tRRH
tWCH
tWP
tWCR
tCWL
tRWL
tDS
tDH
tDHR
tRFSH
column address to RAS lead
read set-up time before CAS
read command hold time
read command hold time from RAS
write command hold time
write command LOW time
write command hold time from RAS
write command to CAS lead
write command to RAS lead
data output set-up time
data output hold time
data output hold from RAS
refresh cycle time
MEMS(3) = 0
MEMS(3) = 1
tCSR
CAS set-up time for refresh
tCHR
CAS hold time for refresh
tRPC
precharge to CAS active time
1996 Apr 25
37
Preliminary specification
SAA7380
MIN. TYP. MAX. UNIT
10T
−
4T
−
−
−
−
−
0
−
4T
−
−
−
4T
−
6T
−
4T − 10 −
3T
−
7T − 10 −
T
−
3T − 10 −
2T
−
T
−
3T − 10 −
T
−
T
−
3T − 10 −
5T − 10 −
3T
−
4T − 10 −
T
−
2T − 10 −
6T − 10 −
10T
−
8T − 10 −
9T − 10 −
8T − 10 −
T
−
3T
−
7T − 10 −
−
−
−
−
2T − 10 −
6T − 10 −
T
−
−
ns
−
ns
3T − 10 ns
7T − 10 ns
−
ns
−
ns
4T
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
400T ns
800T ns
−
ns
−
ns
−
ns