參數(shù)資料
型號(hào): DP83848C-MAU-EK
廠商: National Semiconductor
文件頁(yè)數(shù): 65/86頁(yè)
文件大?。?/td> 0K
描述: BOARD EVALUATION DP83848C
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,以太網(wǎng)
已用 IC / 零件: DP83848C
已供物品:
相關(guān)產(chǎn)品: DP83848CVVX/NOPBTR-ND - TXRX ETHERNET PHYTER 48-LQFP
DP83848CVV-ND - IC TXRX ETHERNET PHYTER 48-LQFP
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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參數(shù)描述
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