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STR91XFA Folha de dados(PDF) 65 Page - STMicroelectronics

Nome de Peças STR91XFA
Descrição Electrónicos  ARM966E-S??16/32-Bit Flash MCU with Ethernet, USB, CAN, AC motor control, 4 timers, ADC, RTC, DMA
PDF  78 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR91XFA Folha de dados(HTML) 65 Page - STMicroelectronics

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Electrical characteristics
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6.15
Communication interface electrical characteristics
6.15.1 10/100 Ethernet MAC electrical characteristics
VDDQ = 2.7 - 3.6V, VDD = 1.65 - 2V, TA = -40 / 85 °C unless otherwise specified.
Ethernet MII Interface Timings
Figure 18. MII_RX_CLK and MII_TX_CLK timing diagram
Table 28.
MII_RX_CLK and MII_TX_CLK timing table
Figure 19. MDC timing diagram
Table 29.
MDC timing table
Ethernet MII management timings
Figure 20. Ethernet MII management timing diagram
Symbol
Parameter
Symbol
Value
Unit
Min
Max
1
Cycle time
tc(CLK)
40
ns
2
Pulse duration HIGH
tHIGH(CLK)
40%
60%
3
Pulse duration LOW
tLOW(CLK)
40%
60%
4
Transition time
tt(CLK)
1ns
Symbol
Parameter
Symbol
Value
Unit
Min
Max
1
Cycle time
tc(MDC)
266
ns
2
Pulse duration HIGH
tHIGH(MDC)
40%
60%
3
Pulse duration LOW
tLOW(MDC)
40%
60%
4
Transition time
tt(MDC)
1ns
MII_RX_TCLK, MII_TX_CLK
1
2
3
4
4
1
2
3
4
4
MDC
1
2
3
MDC
MDIO
output
MDIO
input



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