MB86604L Datasheet, PDF (30/56 Pages) Fujitsu Component Limited. – SCSI-II Protocol Controller (with single-ended driver/receiver)

MB86604L
(b) Read timing
Parameter
Symbol
Base signal
Position*
DACK “L” assert time
DREQ “L” negate time
DREQ “L” → DREQ “H” return time
IORD “L” assert time
DMBHE, DMA0 set up time
DMBHE, DMA0 hold time
IORD “L” level pulse width
DACK “H” negate time
Data output defined time
Data output hold time
DREQ “H”
tRQAK
A
IORD “L”
tRDRQ
B
—
tRQLH
C
DACK “L”
tAKRD
D
IORD “L”
tsuDA
E
IORD “H”
thDA
F
—
twRDL
G
IORD “H”
tRDAK
H
IORD “L”
tvDMD
I
IORD “H”
thDMD
J
* : The position number indicates the position in the waveform.
Value
Min.
Max.
0
—
—
55
0
—
0
—
20
—
20
—
40
—
0
—
—
40
10
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DREQ
DACK
A
t RQAK
DMBHE
DMA0
IORD
DMD15 to DMD0
UDMDP, LDMDP
B
t RDRQ
C
t RQLH
D
t AKRD
H
t RDAK
E
t suDA
G
t wRDL
F
t hDA
I
t vDMD
J
t hDMD
Valid data
30