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PRCM Register Manual
3.8.2.8.2 Clock_Control_Reg_PRM Registers
Table 3-386. PRM_CLKSEL
Address Offset
0x0000 0040
Physical Address
0x4830 6D40
Instance
Clock_Control_Reg_PRM
Description
This register controls the selection of the system clock frequency. This register is reset on power-up
only.
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
SYS_CLKIN_SEL
Bits
Field Name
Description
Type
Reset
31:3
RESERVED
Write 0s for future compatibility. Read returns 0.
R
0x00000000
2:0
SYS_CLKIN_SEL
System clock input selection; Other enums: Reserved
RW
0x4
0x0: OSC_SYS_CLK is 12 MHz
0x1: OSC_SYS_CLK is 13 MHz
0x2: OSC_SYS_CLK is 19.2 MHz
0x3: OSC_SYS_CLK is 26 MHz
0x4: OSC_SYS_CLK is 38.4 MHz
0x5: OSC_SYS_CLK is 16.8 MHz
Table 3-387. Register Call Summary for Register PRM_CLKSEL
PRCM Functional Description
•
:
PRCM Register Manual
•
Clock_Control_Reg_PRM Register Summary
Table 3-388. PRM_CLKOUT_CTRL
Address Offset
0x0000 0070
Physical Address
0x4830 6D70
Instance
Clock_Control_Reg_PRM
Description
This register provides control over the SYS_CLKOUT1 output clock.
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
CLKOUT_EN
601
SWPU177N – December 2009 – Revised November 2010
Power, Reset, and Clock Management
Copyright © 2009–2010, Texas Instruments Incorporated