参数资料
型号: CWMPCEVB5200BE
厂商: Freescale Semiconductor
文件页数: 32/72页
文件大小: 0K
描述: BOARD MPC5200B W/256MB
标准包装: 1
类型: MPU
适用于相关产品: MPC5200B
所含物品:
MPC5200B Data Sheet, Rev. 4
38
Freescale Semiconductor
Figure 26. Timing Diagram—ATA-ISOLATION
1.3.10
Ethernet
AC Test Timing Conditions:
Output Loading
All Outputs: 25 pF
Figure 27. Ethernet Timing Diagram—MII Rx Signal
Table 30. Timing Specification ata_isolation
Sym
Description
Min
Max
Units
SpecID
1
ata_isolation setup time
7
IP Bus cycles
A8.48
2
ata_isolation hold time
19
IP Bus cycles
A8.49
Table 31. MII Rx Signal Timing
Sym
Description
Min
Max
Unit
SpecID
t1
RXD[3:0], RX_DV, RX_ER to RX_CLK setup
10
ns
A9.1
t2
RX_CLK to RXD[3:0], RX_DV, RX_ER hold
10
ns
A9.2
t3
RX_CLK pulse width high
35%
65%
RX_CLK Period(1)
1 RX_CLK shall have a frequency of 25% of data rate of the received signal. See the IEEE 802.3 Specification.
A9.3
t4
RX_CLK pulse width low
35%
65%
RX_CLK Period(1)
A9.4
DIOR
2
1
ATA_ISOLATION
t4
t3
t1
t2
RX_CLK (Input)
RXD[3:0] (inputs)
RX_DV
RX_ER
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