參數(shù)資料
型號(hào): MPC5200
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: Hardware Specifications
中文描述: 硬件規(guī)格
文件頁(yè)數(shù): 45/80頁(yè)
文件大小: 790K
代理商: MPC5200
Electrical and Thermal Characteristics
MPC5200 Data Sheet, Rev. 4
Freescale Semiconductor
45
Figure 29. Ethernet Timing Diagram—MII Tx Signal
Figure 30. Ethernet Timing Diagram—MII Async
Table 32. MII Tx Signal Timing
Sym
Description
Min
Max
Unit
SpecID
M5
TX_CLK rising edge to TXD[3:0], TX_EN, TX_ER
Delay
0
25
ns
A9.5
M6
TX_CLK pulse width high
35%
65%
TX_CLK Period
1
NOTES:
1
the TX_CLK frequency shall be 25% of the nominal transmit frequency, e.g., a PHY operating at 100 Mb/s must
provide a TX_CLK frequency of 25 MHz and a PHY operating at 10 Mb/s must provide a TX_CLK frequency of 2.5
MHz. See the IEEE 802.3 Specification [6].
A9.6
M7
TX_CLK pulse width low
35%
65%
TX_CLK Period
(1)
A9.7
Table 33. MII Async Signal Timing
Sym
Description
Min
Max
Unit
SpecID
M8
CRS, COL minimum pulse width
1
.
5
TX_CLK Period
A9.8
M7
M6
M5
TX_CLK (Input)
TXD[3:0] (Outputs)
TX_EN
TX_ER
M8
CRS, COL
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