Texas Instruments OMAP36 Series, Техническое справочное руководство

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PRCM Register Manual
Bits Field Name Description Type Reset
31:4 RESERVED Write 0s for future compatibility. Read returns 0. R 0x0000000
3 OFFMODE_POL Controls the polarity of the sys_offmode signal RW 0x1
0x0: sys_offmode is active low
0x1: sys_offmode is active high
2 CLKOUT_POL Controls the external output clock polarity when disabled RW 0x0
0x0: sys_clkout is gated low when inactive
0x1: sys_clkout is gated high when inactive
1 CLKREQ_POL Controls the polarity of the sys_clkreq signal RW 0x1
0x0: sys_clkreq is active low
0x1: sys_clkreq is active high
0 EXTVOL_POL Controls the polarity of sys_vmode signal RW 0x0
0x0: sys_vmode signal is active low
0x1: sys_vmode signal is active high
Table 3-476. Register Call Summary for Register PRM_POLCTRL
PRCM Functional Description
• Clock Request (sys_clkreq) Control : [0] [1] [2] [3] [4]
• System Clock Oscillator Control : [5] [6]
• External Output Clock1 (sys_clkout1) Control : [7]
• PRM Source-Clock Controls : [8]
• Direct Control With VMODE Signals : [9] [10]
PRCM Use Cases and Tips
• Initialization Procedure : [11]
PRCM Register Manual
• Global_Reg_PRM Register Summary : [12]
Table 3-477. PRM_VOLTSETUP2
Address Offset 0x0000 00A0
Physical Address 0x4830 72A0 Instance Global_Reg_PRM
Description This register allows setting the overall setup time of VDD1 and VDD2 regulators. This register is used
when exiting OFF mode and when the Power IC manages the sequencing of the voltages regulation
steps.
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 OFFMODESETUPTIME
Bits Field Name Description Type Reset
31:16 RESERVED Write 0s for future compatibility. Read returns 0. R 0x0000
15:0 OFFMODESETUPTIME Number of 32kHz clock cycles for the overall setup time RW 0x0000
of VDD1 and VDD2 regulators.
Table 3-478. Register Call Summary for Register PRM_VOLTSETUP2
PRCM Basic Programming Model
• PRM_VOLTSETUP (Voltage Setup Time Register) : [0] [1] [2]
• PRM_VOLTOFFSET (Voltage Offset Register) : [3]
PRCM Register Manual
• Global_Reg_PRM Register Summary : [4]
641 SWPU177N – December 2009 – Revised November 2010 Power, Reset, and Clock Management
Copyright © 2009–2010, Texas Instruments Incorporated