参数资料
型号: MSC8144ADS
厂商: Freescale Semiconductor
文件页数: 55/80页
文件大小: 0K
描述: ADS FOR MSC8144 DEVICE
标准包装: 1
类型: DSP
适用于相关产品: MSC8144
所含物品: AMC 卡、电源、缆线、USB TAP、硬件和说明文档
t MDC
ETHMDC
ETHMDIO
(Input)
ETHMDIO
(Output)
t MDDVKH
t MDKHDX
t MDDXKH
Figure 24. MII Management Interface Timing
2.6.10.2
MII Transmit AC Timing Specifications
Table 41 provides the MII transmit AC timing specifications.
Table 41. MII Transmit AC Timing Specifications
Parameter/Condition
TX_CLK to MII data TXD[3:0], TX_ER, TX_EN delay
Notes:
1.
Typical TX_CLK period (t MTX ) for 10 Mbps is 400 ns and for 100 Mbps is 40 ns.
Symbol 1
t MTKHDX
Min
0
Max
25
Unit
ns
2.
Program GCR4 as 0x00030CC3.
Figure 25 shows the MII transmit AC timing diagram.
TX_CLK
TXD[3:0]
TX_EN
TX_ER
t MTKHDX
Figure 25. MII Transmit AC Timing
2.6.10.3
MII Receive AC Timing Specifications
Table 42 provides the MII receive AC timing specifications.
Table 42. MII Receive AC Timing Specifications
Parameter/Condition
RXD[3:0], RX_DV, RX_ER setup time to RX_CLK
RXD[3:0], RX_DV, RX_ER hold time to RX_CLK
Notes:
1.
Typical RX_CLK period (t MRX ) for 10 Mbps is 400 ns and for 100 Mbps is 40 ns.
Symbol 1
t MRDVKH
t MRDXKH
Min
10.0
2
Max
Unit
ns
ns
2.
Program GCR4 as 0x00030CC3.
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
Freescale Semiconductor
55
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