Product specifications

VT8237R Data Sheet
Revision 2.06 December 15, 2004 -54- Device 15 Function 0 Serial ATA Controller Registers
Offset 13-10 - Pri Data / Command Base Address .........RW
Specifies an 8 byte I/O address space.
31-16 Reserved ..........................................always read 0
15-3 Port Address....................................... default=01F0h
2-0 Fixed at 001b ..................................................... fixed
Offset 17-14 - Pri Control / Status Base Address ...........RW
Specifies a 4 byte I/O address space of which only the third
byte is active (i.e., 3F6h for the default base address of 3F4h).
31-16 Reserved ..........................................always read 0
15-2 Port Address....................................... default=03F4h
1-0 Fixed at 01b ....................................................... fixed
Offset 1B-18 - Sec Data / Command Base Address ........RW
Specifies an 8 byte I/O address space.
31-16 Reserved ..........................................always read 0
15-3 Port Address ...................................... default=0170h
2-0 Fixed at 001b ..................................................... fixed
Offset 1F-1C - Sec Control / Status Base Address..........RW
Specifies a 4 byte I/O address space of which only the third
byte is active (i.e., 376h for the default base address of 374h).
31-16 Reserved ..........................................always read 0
15-2 Port Address ...................................... default=0374h
1-0 Fixed at 01b ....................................................... fixed
Offset 23-20 - Bus Master Control Regs Base Address..RW
Specifies a 16 byte I/O address space compliant with the
SATA rev 1.0 specification.
31-16 Reserved ..........................................always read 0
15-4 Port Address ....................................... default=CC0h
3-0 Fixed at 0001b ................................................... fixed
See Rx42[7-6] for Native / Compatibility mode select for the
above registers
Offset 27-24 - SATA Ctrl/Status Regs Base Address .....RW
Specifies a 256 byte I/O address space.
31-16 Reserved ..........................................always read 0
15-8 Port Address ..........................................default=8Ch
7-6 SATA Port Select
00 SATA 1 (Primary Master)
01 SATA 2 (Primary Slave)
10 SATA 3 (Secondary Master)
11 SATA 4 (Secondary Slave)
5-0 Fixed at 000001b ............................................... fixed
Offset 2D-2C – Sub Vendor ID (1106h)........................... RO
Offset 2F-2E – Sub Device ID (3149h) ............................. RO
Offset 34 – Power Mgmt Capabilities Pointer (C0h)...... RO
Offset 3C - Interrupt Line (0Dh)...................................... RO
7-4 Reserved ......................................... always read 0
3-0 IDE Interrupt Routing (for native mode)
0000 Disable
0001 IRQ1
0010 IRQ2
… …
1101 IRQ13 .................................................... default
1110 IRQ14
1111 IRQ15
APIC
(See Device 17 Function 0 Rx58[6])
x000 IRQ16
x001 IRQ17
x010 IRQ18
… …
x111 IRQ23
Offset 3D - Interrupt Pin (01h)......................................... RO
7-0 Interrupt Routing Mode
00h Legacy mode interrupt routing
01h Native mode interrupt routing .............. default
Offset 3E - Minimum Grant (00h) ................................... RO
Offset 3F - Maximum Latency (00h)................................ RO