Table 8-11 Set Features Register Definitions; Table 8-12 Transfer Mode Values - Samsung SpinPoint M9T Product Manual

Code
02h
03h
06h
07h
10h
44h
55h
82h
86h
90h
AAh
BBh
D2h-DFh
F0h-FFh
When the drive receives this command, it checks the contents of the Feature register, clears BSY, and
generates an interrupt. If the value in the Feature register is not supported or is invalid, the drive posts an
Aborted Command error.
A host can choose the transfer mechanism by Set Transfer Mode and specifying a value in the Sector Count
register in feature 03. The upper 5 bits define the type of transfer, and the low order 3 bits encode the mode
value. Refer to the following table for details.
PIO default mode
PIO default mode, disable IORDY
PIO flow control transfer mode
Multiword DMA mode
Ultra DMA mode
Mode = transfer mode number
Spinpoint M9T Product Manual REV 1.0

Table 8-11 Set Features Register Definitions

Enable Write Cache
Set transfer mode based on value in Sector Count register
Enable Power-Up in Standby Mode
Power-Up in Standby feature set device spin up
Enable use of SATA features
SC=02: DMA Setup FIS Auto Activate automation
SC=03: Device-initiated interface power state transition
SC=06: Software Settings Preservation
Obsolete (Set VU ECC length)
Disable read look-ahead feature
Disable Write Cache
Disable Power-Up in Standby Mode
Disable use of SATA features
SC=02: DMA Setup FIS Auto Activate automation
SC=03: Device-initiated interface power state transition
SC=06: Software Settings Preservation
Enable read look-ahead feature
Obsolete (Set 4-byte ECC length)
VU Features
VU Features

Table 8-12 Transfer Mode Values

Mode
Description
Bits(7:3)
00000
00000
00001
00100
01000
Bits(2:0)
000
001
mode
mode
mode
61