STR91XF datasheet(61/72 Pages) STMICROELECTRONICS

部件名	STR91XF

功能描述	ARM966E-S 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC Motor Control, 4 Timers, ADC, RTC, DMA

PDF	72 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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61 / 72 page

STR91xF

Electrical characteristics

61/72

6.13

Communication interface electrical characteristics

6.13.1 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 16. MII_RX_CLK and MII_TX_CLK timing diagram

Table 20.

MII_RX_CLK and MII_TX_CLK timing table

Figure 17. MDC timing diagram

Table 21.

MDC timing table

Ethernet MII management timings

Figure 18. Ethernet MII management timing diagram

Symbol

Parameter

Symbol

Value

Unit

Min

Max

Cycle time

tc(CLK)

Pulse duration HIGH

tHIGH(CLK)

40%

60%

Pulse duration LOW

tLOW(CLK)

40%

60%

Transition time

tt(CLK)

1ns

Symbol

Parameter

Symbol

Value

Unit

Min

Max

Cycle time

tc(MDC)

266

Pulse duration HIGH

tHIGH(MDC)

40%

60%

Pulse duration LOW

tLOW(MDC)

40%

60%

Transition time

tt(MDC)

1ns

MII_RX_TCLK, MII_TX_CLK

MDC

MDIO

output

MDIO

input

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