參數(shù)資料
型號: DP83848CVVX/NOPB
廠商: National Semiconductor
文件頁數(shù): 65/86頁
文件大?。?/td> 0K
描述: TXRX ETHERNET PHYTER 48LQFP
產(chǎn)品培訓模塊: PHYTER® Family
標準包裝: 1
系列: *
其它名稱: DP83848CVVX/NOPBDKR
67
www.national.com
DP
83
84
8
C
8.2.5 100 Mb/s MII Receive Timing
Note: RX_CLK may be held low or high for a longer period of time during transition between reference and recovered
clocks. Minimum high and low times will not be violated.
8.2.6 100BASE-TX Transmit Packet Latency Timing
Note: For Normal mode, latency is determined by measuring the time from the first rising edge of TX_CLK occurring after
the assertion of TX_EN to the first bit of the “J” code group as output from the PMD Output Pair. 1 bit time = 10 ns in 100
Mb/s mode.
Parameter
Description
Notes
Min
Typ
Max
Units
T2.5.1
RX_CLK High/Low Time
100 Mb/s Normal mode
16
20
24
ns
T2.5.2
RX_CLK to RXD[3:0], RX_DV, RX_ER Delay 100 Mb/s Normal mode
10
30
ns
Parameter
Description
Notes
Min
Typ
Max
Units
T2.6.1
TX_CLK to PMD Output Pair
Latency
100 Mb/s Normal mode
6
bits
RX_CLK
RXD[3:0]
RX_DV
Valid Data
RX_ER
TX_CLK
TX_EN
TXD
PMD Output Pair
(J/K)
IDLE
DATA
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