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SPEAR320 Folha de dados(PDF) 60 Page - STMicroelectronics

Nome de Peças SPEAR320
Descrição Electrónicos  Embedded MPU with ARM926 core, optimized for factory automation and consumer applications
PDF  73 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SPEAR320 Folha de dados(HTML) 60 Page - STMicroelectronics

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Timing requirements
SPEAr320
60/73
Doc ID 16755 Rev 5
7.9
MII Ethernet MAC 10/100 Mbps timing characteristics
The characterization timing is given for an output load of 5 pF on the MII TX clock and 10 pF
on the other pads.
7.9.1
MII transmit timing specifications
Figure 19.
MII TX waveforms
Note:
To calculate the tSETUP value for the PHY you have to consider the next tCLK rising edge, so
you have to apply the following formula: tSETUP = tCLK - tmax
7.9.2
MII receive timing specifications
Figure 20.
MII RX waveforms
Table 40.
MII TX timings
Symbol
Description
Min
Max
Unit
tCK
MII_TXCLK clock period
40
40
ns
tD
MII_TXCLK to MII output data delay
-1
8.9
tD
MII_TXCLK
MII_TXD0-MII_TXD3,
MII_TXEN, MII_TXER
tck
Table 41.
MII RX timings
Symbol
Description
Min
Max
Unit
tCK
MII_TXCLK clock period
40
40
ns
tS
Setup time requirement for MII receive data
1.6
tH
Hold time requirement for MII receive data
0.7
MII_RXCLK
MII_RXD0-MII_RXD3
MII_RXER, MII_RXDV
tS
tH
tCK



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