Intel J1850 FH8065301455200 User Manual

Datasheet

177

All of these I/O registers are in the core well. They are exposed only when CC.SCC is 

01h (that is, IDE programming interface). These are Index/Data Pair registers that are 

used to access the SerialATA superset registers (SerialATA Status, SerialATA Control 

and SerialATA Error). The I/O space for these registers is allocated through SIDPBA. 

Locations with offset from 08h to 0Fh are reserved for future expansion. Software write 

operations to the reserved locations shall have no effect while software read operations 

to the reserved locations shall return 0. Refer to Serial ATA Index/Data Pair Superset 

Registers for more details.

Default: 00000000h

0h

4

00000000h

4h

4

00000000h

Type: I/O Register

(Size: 32 bits)

ABAR Type: PCI Configuration Register (Size: 32 bits)
ABAR Reference: [B:0, D:19, F:0] + 24h

31

28

24

20

16

12

8

4

0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

RS

VD0

PIDX

RID

X

31:16

0b

RO

RSVD0: Reserved

15:8

00h

RW

Port Index (PIDX): This index field is used to specify the port of the SATA controller 

that the port specific SerialATA Status (SSTS), SerialATA Control (SCTL) and SerialATA 

Error (SERR) registers are to be read from or write to. 00h = Primary Master (Port 0); 

01h = Primary Slave (Port 2); 02h = Secondary Master (Port 1); 03h = Secondary Slave 

(Port 3).

7:0

00h

RW

Register Index (RIDX): This index field is used to specify one out of three registers 

currently being indexed into. These three registers are the Serial ATA superset SStatus, 

SControl and SError memory registers and are port specific, hence for this SATA 

controller, there are four sets of these registers. Refer to Offset 128h, 1A8h, 228h, 

2A8h, 328h, 3A8h: PxSSTS - Port [0-5] Serial ATA Status, Offset 12Ch, 1ACh, 22Ch, 

2ACh, 32Ch, 3ACh: PxSCTL - Port [0-5] Serial ATA Control, and Offset 130h, 1B0h, 

230h, 2B0h, 330h, 3B0h: PxSERR - Port [0-5] Serial ATA Error for definitions of the 

SStatus, SControl and SError registers. 00h = SSTS; 01h = SCTL; 02h = SERR.