Seagate Medalist ST3636A Product Manual page 62

Chapter 7
Page 50
Word : Description:
(hex)
49
Capabilities definitions
bits 15-14
bit 13
bit 12
bit 11
bit 10
bit 9
bits 8
bits 7-1
bits 0
50 Reserved
51 bits 15-8
bits 7-0
52
bits 15-8
bits 7-0
53 bits 15-2
bit 1
bit 0
54
Number of current logical cylinders
55 Number of current logical heads
56 Number of current sectors per logical track
57
LSW Current capacity in sectors
58
MSW Current capacity in sectors
59
bits 15-9
bit 8
bits 7-0
60 LSW Total number of user addressable sectors (LBA mode only)
61
MSW Total number of user addressable sectors (LBA mode only)
bits 15-8
62
bits 7-0
0 = (reserved)
1 = Standby timer as specified in ATA
0 = (reserved)
1 = IORDY supported
1 = IORDY can be disabled
1 = LBA supported
1 = DMA supported
0 = (vendor specific)
1 = assign alternate supported (vendor specific)
PIO data transfer cycle timing mode (w/o IORDY)
Vendor specific
= DMA data transfer timing mode
Vendor specific
Reserved
1 = the fields reported in words 64-70 are valid
0 = the fields reported in words 64-70 are not valid
1 = the fields reported in words 54-58 are valid
0 = the fields reported in words 54-58 are not valid
Reserved
1 = Multiple sector setting is valid
xx = current setting for number of sectors per
transfer on R/W Multiple commands
Vendor specific (Obsolete)
Vendor specific (Obsolete)
ST3636A/ST31082A/ST31276A
Command Set