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PRCM Register Manual
Table 3-530. Register Call Summary for Register PM_WKDEP_USBHOST
PRCM Functional Description
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PRCM Basic Programming Model
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PM_WKDEP_ <domain_name> (Wake-Up Dependency Register)
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PRCM Register Manual
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Table 3-531. PM_PWSTCTRL_USBHOST
Address Offset
0x0000 00E0
Physical Address
0x4830 74E0
Instance
USBHOST_PRM
Description
This register controls the USB HOST domain power state transition.
Type
RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
RESERVED
RESERVED
RESERVED
RESERVED
POWERSTATE
MEMONSTATE
MEMRETSTATE
LOGICRETSTATE
SAVEANDRESTORE
Bits
Field Name
Description
Type
Reset
31:18
RESERVED
Write 0s for future compatibility. Read returns 0.
R
0x0000
17:16
MEMONSTATE
Memory state when ON
R
0x3
0x3: Memory is always ON when domain is ON.
15:9
RESERVED
Write 0s for future compatibility. Read returns 0.
R
0x00
8
MEMRETSTATE
Memory state when RETENTION
R
0x1
0x1: Memory is always retained when domain is in
RETENTION state.
7:5
RESERVED
Write 0s for future compatibility. Read returns 0.
R
0x0
4
SAVEANDRESTORE
Save And Restore mechanism for the USB HOST
RW
0x0
module
0x0: Disable the save and restore mechanism for the
USB HOST module
0x1: Enable the save and restore mechanism for the USB
HOST module
3
RESERVED
Write 0s for future compatibility. Read returns 0.
R
0x0
2
LOGICRETSTATE
Logic state when RETENTION
R
0x1
0x1: Logic is always retained when domain is in
RETENTION state.
1:0
POWERSTATE
Power state control
RW
0x3
0x0: OFF state
0x1: RETENTION state
0x2: Reserved
0x3: ON state
659
SWPU177N – December 2009 – Revised November 2010
Power, Reset, and Clock Management
Copyright © 2009–2010, Texas Instruments Incorporated