Datasheet

4
5
MDIO_CK
MDIO_D
(Input)
1
MDIO_CK
MDIO_D
2 3
1
MDIO_CK
F28M36P63C, F28M36P53C, F28M36H53C, F28M36H53B, F28M36H33C, F28M36H33B
SPRS825C –OCTOBER 2012–REVISED FEBRUARY 2014 www.ti.com
7.2.6.4 MDIO Electrical Data and Timing
Table 7-28. Switching Characteristics Over Recommended Operating Conditions (Unless Otherwise
Noted) for MDIO_CK (see Figure 7-31)
NO. PARAMETER MIN MAX UNIT
1 t
c(MCK)
Cycle time, MDIO_CK (2.5 MHz) 400 400 ns
2 t
w(MCKH)
Pulse duration, MDIO_CK high 196 204 ns
3 t
w(MCKL)
Pulse duration, MDIO_CK low 196 204 ns
Figure 7-31. MII Serial Management Timing
Table 7-29. Switching Characteristics Over Recommended Operating Conditions (Unless Otherwise
Noted) for MDIO as Output (see Figure 7-32)
NO. PARAMETER MIN MAX UNIT
1 t
d(MCKH-MDV)
Delay time, MDIO_CK high to MDIO_D valid 5 25 ns
Figure 7-32. MII Serial Management Timing – MDIO as Output
Table 7-30. Timing Requirements for MDIO as Input (see Figure 7-33)
NO. MIN NOM MAX UNIT
4 t
su(MDV-MCKH)
Setup time, MDIO_D valid before MDIO_CK high 20 ns
5 t
h(MCKH-MDV)
Hold time, MDIO_D valid after MDIO_CK high 7 ns
Figure 7-33. MII Serial Management Timing – MDIO as Input
210 Peripheral Information and Timings Copyright © 2012–2014, Texas Instruments Incorporated
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