Sata Interfaces - HP Compaq dc7600 MT Technical Reference Manual

5.2.2 SATA Interfaces

These systems provide one, two, or four serial ATA (SATA) interfaces that can provide certain
advantages over legacy EIDE (PATA) interface including:
■
Higher transfer rates: up to 3.0 Gb/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.
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 5-4.
SATA PCI Configuration Registers (82801, Device 31/Function 2)
PCI Conf.
Addr.
00-01h
02-03h
04-05h
06-07h
08h
09h
0Ah
0Bh
0Dh
0Eh
Technical Reference Guide
Reset
Register Value
Vender ID 8086h
Device ID 24D1h
PCI Command 0000h
PCI Status 02B0h
Revision ID 00h
Programming 8Ah
Sub-Class 01h
Base Class Code 01h
Master Latency Timer 00h
Header Type 00h
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Table 5-4.
PCI Conf.
Addr.
0F..1Fh Reserved
10-17h Pri. Cmd, Cntrl.
Addrs.
18-1Fh Sec. Cmd, Cntrl.
Addrs.
20-23h BMstr Base Address
2C, 2Dh Subsystem Vender ID
2E, 2Fh Subsystem ID
34h Capabilities pointer
3Ch Interrupt Line
3Dh Interrupt Pin
40-57h Timing, Control
Input/Output Interfaces
Reset
Register Value
0's
1 (both)
1 (both)
1
0000h
0000h
80h
00h
01h
All 0's
5-5