Intel PCI-X manual Category, Abbreviation Name Register, 82544GC/EI , 82541xx , or 82547GI/EI

Register Descriptions

Category	Offset	Abbreviation	Name	R/W	Page
Diagnostic	03418h	TDFT	Transmit Data FIFO Tail	R/W	367
Diagnostic	03420h	TDFHS	Transmit Data FIFO Head Saved Register	R/W	367
Diagnostic	03428h	TDFTS	Transmit Data FIFO Tail Saved Register	R/W	368
Diagnostic	03430h	TDFPC	Transmit Data FIFO Packet Count	R/W	368
Diagnostic	10000h-	PBM	Packet Buffer Memory (n)	R/W	369
	1FFFCh

Note: The PHY registers are accessed indirectly through the MDI/O interface described in Section 8.2.

Category	MDI	Abbreviation	Name	R/W	Page
	Register
PHY	00d	PCTRL	PHY Control Register	R/W	241
PHY	01d	PSTATUS	PHY Status Register	R	244
PHY	02d	PID	PHY Identifier (LSB)	R	246
PHY	03d	EPID	Extended PHY Identifier (MSB)	R	246
PHY	04d	ANA	Auto-Negotiation Advertisement Register	R/W	247
PHY	05d	LPA	Link Partner Ability Register (Base Page)	R	251
PHY	06d	ANE	Auto-Negotiation Expansion Register	R	254
PHY	07d	NPT	Next Page Transmit Register	R/W	255
PHY	08d	LPN	Link Partner Next Page Register	R	256
PHY	09d	GCON	1000BASE-T Control Register	R/W	257
PHY	10d	GSTATUS	1000BASE-T Status Register	R	258
PHY	15d	EPSTATUS	Extended PHY Status Register	R	259
PHY	16d	PSCON	PHY Specific Control Register	R/W	260
PHY	17d	PSSTAT	PHY Specific Status Register	R	263
PHY	18d	PINTE	PHY Interrupt Enable	R/W	266
PHY	19d	PINTS	PHY Interrupt Status	R	268
PHY	20d	EPSCON1	Extended PHY Specific Control 1	R/W	271
		EPSCON (82544GC/
		EI)
PHY	21d	PREC	PHY Receive Error Counter	R	273
PHY	23d1	PGSTAT	PHY Global Status	R	275
			SPEED_TEN_LED and LINK_ACT_LED2
PHY	24d1	PLED	PHY LED Control	R/W	276
			SPEED_100_LED and
			SPEED_1000_LED2
			Extended PHY Specific Status (not
PHY	26d	EPSCON2	applicable to the 82540EP/EM or 82544GC/	R/W	277
			EI)
PHY	27d3	EPSSTAT	Extended PHY Specific Status	R/W	277
PHY	29d	R30PS	Register 30 Page Select (not applicable to	W	277
			the 82544GC/EI, 82541xx, or 82547GI/EI)
			Register 30 Access Window (not applicable
PHY	30d	R30AW	to the 82544GC/EI, 82541xx, or 82547GI/	R/W	278
			EI)
PHY	31d	PPAGE	Page Select (82541xx and 82547GI/EI	R/W	279
			only)

1.Applicable to the 82544GC/EI, 82541xx, and 82547GI/EI only.

2.Applicable to the 82541xx, and 82547GI/EI only.

3.Applicable to the 82544GC/EI only.

218 Software Developer’s Manual