Sata Interfaces - HP Compaq d330 DT Technical Reference Manual

Chapter 5 Input/Output Interfaces

5.2.2 SATA INTERFACES

These systems provide at least one serial ATA (SATA) interface that can provide certain
advantages over the legacy EIDE interface including:
♦
Higher transfer rates: up to 1.5 Gb/s (150 MB/s)
♦
Reduced wiring (smaller cable assemblies)
The SATA interface duplicates most of the functionality of the EIDE interface through a register
interface that is equivalent to that of the legacy IDE host adapter.
5.2.2.1 SATA PROGRAMMING
The SATA interface is configured as a PCI device during POST and controlled through I/O-
mapped registers at runtime. Non-DOS (non-Windows) operating systems may require using
Setup (F10) for drive configuration.
SATA Configuration Registers
The SATA controller is configured as a PCI device with bus mastering capability. The PCI
configuration registers for the SATA controller function (PCI device #31, function #2) are listed
in Table 5-1.
Table 5-4. IDE PCI Configuration Registers
SATA PCI Configuration Registers (82801, Device 31/Function 2)
PCI Conf.
Addr. Register
00-01h Vender ID
02-03h Device ID
04-05h PCI Command
06-07h PCI Status
08h Revision ID
09h Programming
0Ah Sub-Class
0Bh Base Class Code
0Dh Master Latency Timer
0Eh Header Type
5-4 hp compaq d330 and d530 Series of Personal Computers
Featuring the Intel Pentium 4 Processor
Table 5-4.
Reset PCI Conf.
Value Addr.
8086h 0F..1Fh
24D1h 10-17h
0000h 18-1Fh
02B0h 20-23h
00h 2C, 2Dh
8Ah 2E, 2Fh
01h 34h
01h 3Ch
00h 3Dh
00h 40-57h
First Edition – June 2003
Register
Reserved
Pri. Cmd, Cntrl. Addrs.
Sec. Cmd, Cntrl. Addrs.
BMstr Base Address
Subsystem Vender ID
Subsystem ID
Capabilities pointer
Interrupt Line
Interrupt Pin
Timing, Control
Reset
Value
0's
1 (both)
1 (both)
1
0000h
0000h
80h
00h
01h
All 0's