Texas Instruments TMS320DM646x manual Mdio User PHY Select Register 1 USERPHYSEL1

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MDIO Registers

4.14 MDIO User PHY Select Register 1 (USERPHYSEL1)

The MDIO user PHY select register 1 (USERPHYSEL1) is shown in Figure 40 and described in Table 38.

Figure 40. MDIO User PHY Select Register 1 (USERPHYSEL1)

31						16
		Reserved
		R-0
15	8	7	6	5	4	0
Reserved		LINKSEL	LINKINTENB	Rsvd		PHYADRMON
R-0		R/W-0	R/W-0	R-0		R/W-0

LEGEND: R/W = Read/Write; R = Read only; -n= value after reset

Table 38. MDIO User PHY Select Register 1 (USERPHYSEL1) Field Descriptions

Bit	Field	Value	Description
31-8	Reserved	0	Reserved
7	LINKSEL		Link status determination select bit. Default value is 0, which implies that the link status is
			determined by the MDIO state machine. This is the only option supported on this device.
		0	The link status is determined by the MDIO state machine.
		1	Not supported.
6	LINKINTENB		Link change interrupt enable. Set to 1 to enable link change status interrupts for the PHY address
			specified in PHYADRMON. Link change interrupts are disabled if this bit is set to 0.
		0	Link change interrupts are disabled.
		1	Link change status interrupts for PHY address specified in PHYADDRMON bits are enabled.
5	Reserved	0	PHY address whose link status is to be monitored.
4-0	PHYADRMON	0-1Fh	PHY address whose link status is to be monitored.

SPRUEQ6–December 2007	Ethernet Media Access Controller (EMAC)/Management Data Input/Output (MDIO)	83
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