Set Features (Efh) - Toshiba MK3006GAL Specification

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10.8.35 Set Features (EFh)

COMMAND CODE
REGISTER SETTING
DR
CY
HD
SN
SC Mode Selection for Data Transfer(*2)
FT
(*1) Features: FT register defines following selections.
02H Enable write cache feature
03H Select data transfer mode
05H Enable advanced power management
55H Disable read look-ahead feature
66H Disable reverting to power on defaults by soft reset
82H Disable write cache feature
85H Disable advanced power management
AAH Enable read look-ahead feature
CCH Enable reverting to power on defaults by soft reset
others Invalid (reporting with Aborted Command Error)
(*2)Mode selection for data transfer is specified in sector count register. Upper 5 bits show transfer mode
and lower 3 bits show mode figure.
PIO default transfer mode
PIO default transfer mode, disable IORDY
PIO flow control transfer mode nnn
Multiword DMA mode nnn
Ultra DMA mode nnn
Reserved
PIO default mode is mode 4 flow control. DMA default mode is Multiword DMA mode 2.
The level of Advanced Power Management function is set in Sector count register.
C0h-FEh
80h-BFh
01h-7Fh
00h,FFh
Transition time of power save is changed dynamically in Mode1 and Mode2 due to Adaptive power control
function. The function level is set to Mode1 when Advanced Power Management function is disabled.
If FT register has any other value, the drive rejects the command with Abort Command error.
Default settings after power on or hard reset are:
Data transfer mode of Multiword DMA mode 2, PIO mode 4 flow control,
4 bytes ECC, look-ahead read enabled, write cache enabled, advanced power management enabled,
READ/WRITE Multiple command enabled (16 sectors)
and reverting to power on defaults by soft reset disabled.
1 1 1 0 1 1 1 1
DRIVE No.
Features(*1)
Mode0 (Power save up to Low Power Idle)
Mode1 (Power save up to Low Power Idle)
Mode2 (Power save up to Standby)
Aborted
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REGISTER
NORMAL COMPLETION
no change
no change
no change
no change
no change
no change
00000 000
00000 001
00001 nnn
00100 nnn
01000 nnn
10000 nnn
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