FlashDrive Product Manual
FlashDrive Product Manual © 1999 SANDISK CORPORATION
35
5.2.11
Drive Address Register
This register contains the drive select and head
select addresses of the currently selected drive.
The bits are defined as follows:
D7
D6
D5
D4
D3
D2
D1
D0
X
-WTG
-HS3
-HS2
-HS1
-HS0
-nDS1
-nDS0
Bit 7
This bit is not driven.
Bit 6 (-WTG)
This bit is 0 when a write operation is in progress, otherwise, it is 1.
Bit 5 (-HS3)
This bit is the negation of bit 3 in the Drive/Head register.
Bit 4 (-HS2)
This bit is the negation of bit 2 in the Drive/Head register.
Bit 3 (-HS1)
This bit is the negation of bit 1 in the Drive/Head register.
Bit 2 (-HS0)
This bit is the negation of bit 0 in the Drive/Head register.
Bit 1 (-nDS1)
This bit is 0 when drive 1 is active and selected.
Bit 0 (-nDS0)
This bit is 0 when the drive 0 is active and selected.
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