CS8900 데이터 시트보기 (PDF) - Cirrus Logic
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CS8900 Datasheet PDF : 132 Pages
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10.0 SWITCHING CHARACTERISTICS (continued)
16-BIT MEMORY READ, IOCHRDY NOT USED
Parameter
SA [19:0], SBHE, CHIPSEL, active to MEMCS16 low
Address, SBHE, CHIPSEL active to MEMR active
MEMR low to SD valid
Address, SBHE, CHIPSEL hold after MEMR inactive
MEMR inactive to SD 3-state
MEMR inactive to active
Symbol
tMEMR1
tMEMR2
tMEMR3
tMEMR4
tMEMR5
tMEMR6
SA [19:0],
SBHE,
CHIPSEL
MEMCS16
MEMR
SD [15:0]
tMEMR1
Valid Address
tMEMR2
tMEMR4
tMEMR6
tMEMR3
tMEMR5
Valid Data
16-BIT MEMORY READ, WITH IOCHRDY
Parameter
MEMR low to IOCHRDY inactive
IOCHRDY low pulse width
IOCHRDY active to SD valid
Symbol
tMEMR7
tMEMR8
tMEMR9
SA [19:0],
SBHE,
CHIPSEL
MEMCS16
Valid Address
CS8900
Min
Max
30
20
145
0
30
55
DIRECTION:
IN or OUT of chip
IN
OUT
Units
ns
ns
ns
ns
ns
ns
IN
OUT
Min
Max
35
125
175
0
DIRECTION:
IN or OUT of chip
IN
Units
ns
ns
ns
OUT
116
MEMR
IOCHRDY
SD [15:0]
t MEMR7
t MEMR8
Valid Data
t MEMR9
IN
OUT
OUT
DS150PP2
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