參數(shù)資料
型號: DP83848YB/NOPB
廠商: National Semiconductor
文件頁數(shù): 70/86頁
文件大小: 0K
描述: IC TXRX ETHERNET PHYTERA 48-LQFP
標準包裝: 250
類型: 收發(fā)器
驅動器/接收器數(shù): 1/1
規(guī)程: 以太網
電源電壓: 3 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 48-LQFP 裸露焊盤
供應商設備封裝: 48-LQFP 裸露焊盤(7x7)
包裝: 帶卷 (TR)
其它名稱: DP83848YBTR
71
www.national.com
DP
83
84
8
Y
B
8.2.11 10 Mb/s MII Transmit Timing
Note: An attached Mac should drive the transmit signals using the positive edge of TX_CLK. As shown above, the MII
signals are sampled on the falling edge of TX_CLK.
8.2.12 10 Mb/s MII Receive Timing
Note: RX_CLK may be held low for a longer period of time during transition between reference and recovered clocks.
Minimum high and low times will not be violated.
Parameter
Description
Notes
Min
Typ
Max Units
T2.11.1
TX_CLK High/Low Time
10 Mb/s MII mode
190
200
210
ns
T2.11.2
TXD[3:0], TX_EN Data Setup to TX_CLK fall
10 Mb/s MII mode
25
ns
T2.11.3
TXD[3:0], TX_EN Data Hold from TX_CLK rise
10 Mb/s MII mode
0
ns
Parameter
Description
Notes
Min
Typ
Max
Units
T2.12.1
RX_CLK High/Low Time
160
200
240
ns
T2.12.2
RX_CLK to RXD[3:0], RX_DV Delay
10 Mb/s MII mode
100
ns
T2.12.3
RX_CLK rising edge delay from RXD[3:0],
RX_DV Valid
10 Mb/s MII mode
100
ns
TX_CLK
TXD[3:0]
TX_EN
Valid Data
RX_CLK
RXD[3:0]
RX_DV
Valid Data
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