Texas Instruments 180 to 100 Pin DIMM Adapter TMDSADAP180TO100 TMDSADAP180TO100 Scheda Tecnica
Codici prodotto
TMDSADAP180TO100
4
5
MDIO_CK
MDIO_D
(Input)
1
MDIO_CK
MDIO_D
2
3
1
MDIO_CK
SPRS825C – OCTOBER 2012 – REVISED FEBRUARY 2014
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
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
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
)
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
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