參數(shù)資料
型號: CDK8920A
廠商: Cirrus Logic, Inc.
英文描述: CRYSTAL LAN ISA PLUG-AND-PLAY ETHERNET CONTROLLER
中文描述: 水晶藍的ISA即插即用,即插即用以太網控制器
文件頁數(shù): 129/144頁
文件大?。?/td> 1229K
代理商: CDK8920A
10.0 SWITCHING CHARACTERISTICS (continued)
Parameter
Symbol
Min
Max
Units
16-BIT MEMORY READ, IOCHRDY NOT USED
SA [16:0], SBHE, CHIPSEL, active to MEMCS16 low (Note 1)
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
t
MEMR1
t
MEMR2
t
MEMR3
t
MEMR4
t
MEMR5
t
MEMR6
30
ns
ns
ns
ns
ns
ns
20
145
0
30
55
Parameter
Symbol
Min
Max
Units
16-BIT MEMORY READ, WITH IOCHRDY
MEMR low to IOCHRDY inactive
IOCHRDY low pulse width
IOCHRDY active to SD valid
t
MEMR7
t
MEMR8
t
MEMR9
35
175
0
ns
ns
ns
125
SA [16:0],
SBHE,
CHIPSEL
Valid Address
MEMCS16
IN
DIRECTION:
IN or OUT of chip
MEMR
SD [15:0]
Valid Data
OUT
IN
OUT
IOCHRDY
OUT
t
MEMR7
t
MEMR8
t
MEMR9
SA [16:0],
SBHE,
CHIPSEL
Valid Address
MEMCS16
IN
DIRECTION:
IN or OUT of chip
MEMR
SD [15:0]
Valid Data
OUT
IN
OUT
t
MEMR1
t
MEMR2
t
MEMR3
t
MEMR4
t
MEMR5
t
MEMR6
Note 1: It is assumed that the address line LA[23:17] has been latched early with BALE.
CS8920A
DS238PP2
129
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