-DS1
-Drive Select 1. Drive select bit for Device 1, active low. DS1=0 when Device 1 (slave) is
selected and active.
-DS0
-Drive Select 0. Drive select bit for Device 0, active low. DS0=0 when Device 0 (master)
is selected and active.
12.8 Device/Head Register
HS0HS1HS2HS3DRV1L1
01234567
Device/Head Register
Figure 62. Device/Head Register
This register contains the device and head numbers.
Bit Definitions
L
Binary encoded address mode select. When L=0, addressing is by CHS mode. When
L=1, addressing is by LBA mode.
DRV
Device. When DRV=0, Device 0 (master) is selected. When DRV=1, Device 1 (slave) is
selected.
HS3,HS2,HS1,HS0
Head Select. These four bits indicate binary encoded address of the head. HS0 is the
least significant bit. At command completion these bits are updated to reflect the
currently selected head.
The head number may be from zero to the number of heads minus one.
In LBA mode HS3 through HS0 contain bits 24–27 of the LBA. At command completion
these bits are updated to reflect the current LBA bits 24–27.
12.9 Error Register
AMNFTK0NFABRT0IDNF0UNCICRCE
01234567
Error Register
Figure 63. Error Register
This register contains status from the last command executed by the device or a diagnostic code.
At the completion of any command except Execute Device Diagnostic the contents of this register are
always valid even if ERR=0 is in the Status Register.
Following a power on, a reset, or completion of an Execute Device Diagnostic command, this register
contains a diagnostic code. See Figure 67, "Diagnostic Codes" on page 76 for the definitions.
Deskstar 60 GXP Hard disk drive specification
70
To Next Page
Loading...
