參數(shù)資料
型號(hào): IXF440
英文描述: LAN HUB CONTROLLER
中文描述: 局域網(wǎng)集線器控制器
文件頁(yè)數(shù): 88/100頁(yè)
文件大小: 1354K
代理商: IXF440
IXF440 Multiport 10/100 Mbps Ethernet Controller
88
Datasheet
8.8.2.1
Clocks Specifications
Figure 29
shows the MII/SYM port clocks timing diagram.
Table 32
lists the MII/SYM port signals timing specifications.
8.8.2.2
Signals Timing Diagrams
Figure 30
shows the MII/SYM port transmit timing characteristics.
Figure 31
shows the MII/SYM port receive timing characteristics.
Figure 29. MII/SYM Clock Timing Diagram
Table 32. MII/SYM Port Signals Timing Specifications
Symbol
Parameter
Minimum
Maximum
Fm10
tclk, rclk frequency in 10 Mbps
2.5 MHz
100 ppm
2.5 MHz + 100 ppm
Fm100
tclk, rclk frequency in 100 Mbps
25 MHz
100 ppm
25 MHz + 100 ppm
Tmc
tclk, rclk cycle time
Tmh
tclk, rclk high time
0.35
×
Tmc
0.65
×
Tmc
Tml
tclk, rclk low time
0.35
×
Tmc
0.65
×
Tmc
Vmh
tclk, rclk high threshold
2 V
Vml
tclk, rclk low threshold
0.8 V
Figure 30. MII/SYM Port Transmit Timing Diagram
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