Claims
- 1. Disk drive electronics that comprises:
main electronics; bus interface logic; a bus interface logic monitor that monitors activity on a host interface; and a regulator that supplies power to the bus interface logic monitor, the bus interface logic, and the main electronics; wherein the bus interface logic monitor determines whether to enter a sleep mode, and if so, causes power from the regulator to be removed from the bus interface logic and the main electronics.
- 2. The disk drive electronics of claim 1 wherein bus interface logic monitor further determines whether to exit a sleep mode, and if so, causes power to be applied to the bus interface logic and the main electronics.
- 3. The disk drive electronics of claim 1 wherein the bus interface logic monitor determines whether to enter a sleep mode by determining the absence of activity on the host interface for a predetermined length of time or in response to a predetermined message received on the host interface.
- 4. The disk drive electronics of claim 2 wherein the bus interface logic monitor determines whether to exit a sleep mode in response to a message received on the host interface.
- 5. The disk drive electronics of claim 2 wherein the regulator comprises an auxiliary regulator that supplies power to the bus interface logic monitor and the bus interface logic, and a main regulator that supplies power to the main electronics.
- 6. The disk drive electronics of claim 5 wherein the main regulator supplies power in response to an enable signal applied thereto from the bus interface logic monitor.
- 7. The disk drive electronics of claim 6 wherein the main regulator removes power from the main electronics whenever the enable signal is removed.
- 8. The disk drive electronics of claim 5 wherein the auxiliary regulator supplies power to the bus interface logic in response to an enable signal applied thereto from the bus interface logic monitor.
- 9. The disk drive electronics of claim 8 where the auxiliary regulator removes power from the bus interface logic the enable signal is removed.
- 10. The disk drive electronics of claim 5 wherein the auxiliary regulator supplies power to the bus interface logic in response to the bus interface logic monitor causing a switch to close.
- 11. The disk drive electronics of claim 10 wherein the auxiliary regulator removes power from the bus interface logic in response to the bus interface logic monitor causing a switch to open.
Parent Case Info
[0001] This application claims the benefit of U.S. Provisional Application No. 60/420,635, filed on Oct. 22, 2002, which is incorporated herein by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60420635 |
Oct 2002 |
US |