参数资料
型号: MPC5200VR466BR2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 466 MHz, MICROPROCESSOR, PBGA272
封装: 27 X 27 MM, 1.27 MM PITCH, ROHS COMPLIANT, PLASTIC, BGA-272
文件页数: 37/80页
文件大小: 788K
代理商: MPC5200VR466BR2
MPC5200B Data Sheet, Rev. 0.6
Electrical and Thermal Characteristics
Freescale Semiconductor
42
Figure 27. Ethernet Timing Diagram—MII Rx Signal
Figure 28. Ethernet Timing Diagram—MII Tx Signal
Table 32. MII Tx Signal Timing
Sym
Description
Min
Max
Unit
SpecID
t5
TX_CLK rising edge to TXD[3:0], TX_EN, TX_ER
invalid
5—
ns
A9.5
t6
TX_CLK rising edge to TXD[3:0], TX_EN, TX_ER valid
25
ns
A9.6
t7
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].
A9.7
t8
TX_CLK pulse width low
35%
65%
TX_CLK Period(1)
A9.8
Table 33. MII Async Signal Timing
Sym
Description
Min
Max
Unit
SpecID
t9
CRS, COL minimum pulse width
1.5
TX_CLK Period
A9.9
t4
t3
t1
t2
RX_CLK (Input)
RXD[3:0] (inputs)
RX_DV
RX_ER
t8
t7
t5
TX_CLK (Input)
TXD[3:0] (Outputs)
TX_EN
TX_ER
t6
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