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5.3 Host Commands
C141-E120-02EN 5-35
Bit 13: Standby timer value. Factory default is '0.' ATA spec is '1.'
Bit 12: Reserved
Bit 11: 1 = Supported
Bit 10: 0 = Disable inhibition
Bit 7-0: Undefined
Bit 8: 1 = LBA Supported
Bit 9: 1 = DMA Supported
*4 Word 51: PIO data transfer mode
Bit 15-8: PIO data transfer mode X’02’=PIO mode 2
Bit 7-0: Undefined
*5 Word 53: Enable/disable setting of word 54-58 and 64-70
Bit 15-3: Reserved
Bit 2: 1 = Enable the word 88
Bit 1: 1 = Enable the word 64-70
Bit 0: 1 = Enable the word 54-58
*6 Word 59: Transfer sector count currently set by READ/WRITE
MULTIPLE
command
Bit 15-9: Reserved
Bit 8: 1 = Enable the multiple sector transfer
Bit 7-0: Transfer sector count currently set by READ/WRITE
MULTIPLE command without interrupt supports 2, 4, 8 and 16
sectors.
*7 Word 63: Multiword DMA transfer mode
Bit 15-8: Currently used multiword DMA transfer mode
Bit 7-0: Supportable multiword DMA transfer mode
Bit 2: 1 = Mode 2
Bit 1: 1 = Mode 1
Bit 0: 1 = Mode 0
*8 Word 64: Advance PIO transfer mode support status
Bit 15-8: Reserved
Bit 7-0: Advance PIO transfer mode