SMSC LAN8720, LAN8720i NAME, MODE, NAME, MODE, NAME, MODE, Note:, ADDRESS, DEFAULT, ADDRESS, DEFAULT, ADDRESS, DEFAULT, DESCRIPTION, DESCRIPTION, DESCRIPTION

Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support

Datasheet

Table 5.34 Register 29 - Interrupt Source Flags (continued)

ADDRESS	NAME		DESCRIPTION	MODE	DEFAULT
29.1	INT1	1	= Auto-Negotiation Page Received	RO/	X
		0	= not source of interrupt	LH
29.0	Reserved	Ignore on read.		RO/	0
				LH

Table 5.35 Register 30 - Interrupt Mask

ADDRESS	NAME	DESCRIPTION	MODE	DEFAULT
30.15:8	Reserved	Write as 0; ignore on read.	RO	0
30.7:1	Mask Bits	1 = interrupt source is enabled	RW	0
		0 = interrupt source is masked
30.0	Reserved	Write as 0; ignore on read	RO	0

Table 5.36 Register 31 - PHY Special Control/Status

ADDRESS	NAME		DESCRIPTION	MODE	DEFAULT
31.15:13	Reserved	Write as 0, ignore on read.		RW	0
31.12	Autodone	Auto-negotiation done indication:		RO	0
		0	= Auto-negotiation is not done or disabled (or not
		1	active)
			= Auto-negotiation is done
		Note: This is a duplicate of register 1.5, however
			reads to register 31 do not clear status bits.
31.11:10	Reserved	Write as 0, ignore on Read.		RW	XX
31.9:7	GPO[2:0]	General Purpose Output connected to signals		RW	0
		GPO[2:0]
31.6	Enable 4B5B	0	= Bypass encoder/decoder.	RW	1
		1	= enable 4B5B encoding/decoding.
		MAC Interface must be configured in MII mode.
31.5	Reserved	Write as 0, ignore on Read.		RW	0
31.4:2	Speed Indication	HCDSPEED value:		RO	XXX
		[001]=10Mbps Half-duplex
		[101]=10Mbps Full-duplex
		[010]=100Base-TX Half-duplex
		[110]=100Base-TX Full-duplex
31.1	Reserved	Write as 0; ignore on Read		RW	0
31.0	Scramble Disable	0	= enable data scrambling	RW	0
		1	= disable data scrambling,

SMSC LAN8720/LAN8720i	47	Revision 1.0 (05-28-09)
	DATASHEET