Fast Ethernet 10/100 Quad Transceivers — LXT974/LXT975
Figure 36. MDIO Timing when Sourced by STA
MDC
10 ns
(Min)
10 ns
(Min)
MDIO
Figure 37. MDIO Timing When Sourced by PHY
MDC
0 - 300 ns
MDIO
Table 40. MII Timing Parameters
1
Parameter
Sym
Min
Typ
Max
Units
Test Conditions
MDIO setup before MDC
MDIO hold after MDC
–
10
10
0
–
–
–
ns
ns
ns
When sourced by STA
When sourced by STA
When sourced by PHY
–
–
–
MDC to MDIO output delay
27
300
1. Typical values are at 25° C and are for design aid only; not guaranteed and not subject to production testing.
Datasheet
61