參數(shù)資料
型號: LXT914PC
英文描述: LAN HUB CONTROLLER
中文描述: 局域網(wǎng)集線器控制器
文件頁數(shù): 39/42頁
文件大?。?/td> 561K
代理商: LXT914PC
Flexible Quad Ethernet Repeater
LXT914
Datasheet
39
Figure 8. Serial Port Timing
Table 28. Inter-Repeater Bus Timing
(over recommended range)
Parameter
Symbol
Minimum
Typical
Maximum
Units
Start of Frame to IRDEN Low (active)
tIRB1
10
150
ns
Start of Frame to IRENA Low (active)
tIRB2
125
225
ns
BCLKIO to IRDAT valid (Synchronous mode)
tIRB3
5
30
ns
BCLKIO to IRDAT valid (Asynchronous mode)
tIRB3
50
ns
IRENA Low (active) to TP outputs active
tIRB4
525
600
ns
IRENA Low (active) to AUI output active
tIRB5
475
525
ns
End of Frame clock to IRENA High (inactive)
tIRB6
5
30
ns
IRENA High (inactive) to IRDEN High
(inactive)
tIRB7
95
105
ns
IRENA High (inactive) to TP outputs inactive
tIRB8
575
600
ns
IRENA High (inactive) to AUI output inactive
tIRB9
425
450
ns
Typical values are at 25
°
C and are for design aid only; they are not guaranteed and not subject to
production testing.
1
2
3
4
5
6
48
SCLKIO
RESET
SENI
SDIN
SENO
SDOUT
t
S1
t
S2
t
S3
t
S4
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