Intel IXF1104 manual 7.6.3MDIO AC Timing, Mdc Mdio, Datasheet

IXF1104 4-Port Gigabit Ethernet Media Access Controller

7.6.3MDIO AC Timing

Figure 43. MDIO Write Timing Diagram

MDC

VMIN

VMAX

t1

t2

MDIO

Figure 44. MDIO Read Timing Diagram

MDC

MDIO

VMA X

t3

Table 52. MDIO Timing Parameters

Parameter	Symbol	Min	Typ1	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	–	200	ns	MDC = 2.5 MHz

1.Typical values are at 25 oC and are for design aid only; not guaranteed and not subject to production testing.

Datasheet 145

Document Number: 278757

Revision Number: 007

Revision Date: March 25, 2004