lxt971a Intel Corporation, lxt971a Datasheet - Page 69

• Manufacturer Part Number: lxt971a
• Description: 3.3v Dual-speed Fast Ethernet Phy Transceiver
• Manufacturer: Intel Corporation

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