Public Version
PRCM Register Manual
www.ti.com
Bits
Field Name
Description
Type
Reset
4:3
AUTOEXTCLKMODE
This field allows to control the external clock request
RW
0x0
(CLKREQ) and the oscillator
0x0: CLKREQ is kept asserted or the oscillator is always
active (in master mode)
0x1: CLKREQ is de-asserted or the oscillator is put in
power-down mode (in master mode) when all the
voltages domains are SLEEP, RETENTION or OFF
states.
0x2: CLKREQ is de-asserted or the oscillator is put in
power-down mode (in master mode) when all the
voltages domains are RETENTION or OFF states.
0x3: CLKREQ is de-asserted or the oscillator is put in
power-down mode (in master mode) only when all the
voltage domains are in OFF states.
2
RESERVED
Write 0s for future compatibility. Read returns 0.
R
0x0
1:0
SYSCLKSEL
This field reflects the mode of the ocillator. It is
R
0x3
automatically set accordingly to the external tied-off
configuration and its value is unsignificant before the
release of the power-on reset.
0x0: Bypass mode: the system clock is issued from an
external square clock source
0x1: Oscillator mode: the system clock is issued from an
external quartz
0x2: Reserved
0x3: Unknow state (not know before release of the
power-on reset)
Table 3-466. Register Call Summary for Register PRM_CLKSRC_CTRL
PRCM Functional Description
•
:
•
•
System Clock Oscillator Control
•
PRCM Basic Programming Model
•
PRM_CLKSETUP (Source-Clock Setup Register)
PRCM Register Manual
•
Global_Reg_PRM Register Summary
:
Table 3-467. PRM_OBS
Address Offset
0x0000 0080
Physical Address
0x4830 7280
Instance
Global_Reg_PRM
Description
This register logs the observable signals (18 bits). This register is intended to be read through the
debugger interface when the device is in OFF mode.
Type
R
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
OBS_BUS
Bits
Field Name
Description
Type
Reset
31:18
RESERVED
Read is undefined.
R
0x0000
17:0
OBS_BUS
Indicates the current value on the observable bus.
R
0x00000
638
Power, Reset, and Clock Management
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated
Содержание OMAP36 Series
Страница 174: ...174 List of Tables SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 692: ...692 MPU Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1084: ...1084 IVA2 2 Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1990: ...1990 2D 3D Graphics Accelerator SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2334: ...2334 Memory Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2700: ...2700 Memory Management Units SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2868: ...2868 HDQ 1 Wire SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2974: ...2974 UART IrDA CIR SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3054: ...3054 Multichannel SPI SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3462: ...3462 MMC SD SDIO Card Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3508: ...3508 General Purpose Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3584: ...3584 Initialization SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3648: ...3648 Debug and Emulation SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...