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3 mdio ac timing, Figure 43. mdio write timing diagram, Figure 44. mdio read timing diagram – Intel IXF1104 User Manual

Page 146: Table 52. mdio timing parameters, Mdio ac timing, Mdio write timing diagram, Mdio read timing diagram, Mdio timing parameters, Table 52 “mdio, Figure 44

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Intel

®

IXF1104 4-Port Gigabit Ethernet Media Access Controller

Datasheet

146

Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005

7.6.3

MDIO AC Timing

Figure 43. MDIO Write Timing Diagram

Figure 44. MDIO Read Timing Diagram

Table 52. MDIO Timing Parameters

Parameter

Symbol

Min

Typ

1

Max

Units

Test Conditions

MDIO Setup before MDC.

t1

10

–

–

ns

MDC = 17.8 MHz

10

–

–

ns

MDC = 2.5 MHz

MDIO Hold after MDC.

t2

10

–

–

ns

MDC = 17.8 MHz

10

–

–

ns

MDC = 2.5 MHz

MDC to MDIO Output delay

t3

0

–

42

ns

MDC = 17.8 MHz

0

–

300

ns

MDC = 2.5 MHz

1. Typical values are at 25

o

C and are for design aid only; not guaranteed and not subject to production

testing.

t1

MDC

MDIO

t2

V

MAX

V

MIN

t3

MDC

MDIO

V

MA X

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