LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver
Figure 38. MDIO Input Timing
MDC
t2
t1
MDIO
Figure 39. MDIO Output Timing
t4
MDC
t3
MDIO
Table 38. MDIO Timing Parameters
1
Parameter
Symbol
Min
Typ
Max
Units
Test Conditions
MDIO setup before MDC, sourced
by STA
t1
10
–
–
ns
–
MDIO hold after MDC, sourced
by STA
t2
5
–
–
ns
–
MDC to MDIO output delay,
source by PHY
t3
t4
–
–
–
150
–
ns
ns
–
MDC period
125
MDC = 8 MHz
1. Typical values are at 25° C and are for design aid only; not guaranteed and not subject to production
testing.
Datasheet
69
Document #: 249414
Revision #: 002
Rev. Date: August 7, 2002