CS8900 데이터 시트보기 (PDF) - Cirrus Logic
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CS8900 Datasheet PDF : 132 Pages
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CS8900
10.0 SWITCHING CHARACTERISTICS (continued)
16-BIT MEMORY WRITE
Parameter
Address, SBHE, CHIPSEL valid to MEMCS16 low
Address, SBHE, CHIPSEL valid to MEMW low
MEMW pulse width
MEMW low to SD valid
SD hold after MEMW high
Address hold after MEMW inactive
MEMW inactive to active
Symbol
Min
tMEMW1
tMEMW2
20
tMEMW3
125
tMEMW4
tMEMW5
6
tMEMW6
0
tMEMW7
55
Max
Units
30
ns
ns
ns
40
ns
ns
ns
ns
SA [19:0],
SBHE,
CHIPSEL
MEMCS16
Valid Address
tMEMW1
tMEMW6
DIRECTION:
IN or OUT of chip
IN
OUT
tMEMW2
tMEMW3
tMEMW7
MEMW
IN
SD [15:0]
tMEMW4
tMEMW5
IN
Valid Data In
10BASE-T TRANSMIT
Parameter
Symbol Min
Typ
Max Units
TXD Pair Jitter into 100 Ohm Load
tTTX1
TXD Pair Return to < 50 mV after Last Positive Transition
tTTX2
TXD Pair Positive Hold Time at End of Packet
tTTX3
250
8
ns
4.5
µs
ns
TXD±
tTTX1
tTTX2
tTTX3
118
DS150PP2
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