Power, Reset, and Clock Management
8.1.12.5.1 CM_CLKOUT_CTRL Register (offset = 0h) [reset = 0h]
CM_CLKOUT_CTRL is shown in
and described in
.
This register provides the control over CLKOUT2 output
Figure 8-154. CM_CLKOUT_CTRL Register
31
30
29
28
27
26
25
24
Reserved
R-0h
23
22
21
20
19
18
17
16
Reserved
R-0h
15
14
13
12
11
10
9
8
Reserved
R-0h
7
6
5
4
3
2
1
0
CLKOUT2EN
Reserved
CLKOUT2DIV
CLKOUT2SOURCE
R/W-0h
R-0h
R/W-0h
R/W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 8-165. CM_CLKOUT_CTRL Register Field Descriptions
Bit
Field
Type
Reset
Description
31-8
Reserved
R
0h
7
CLKOUT2EN
R/W
0h
This bit controls the external clock activity
0x0 = DIS : SYS_CLKOUT2 is disabled
0x1 = EN : SYS_CLKOUT2 is enabled
6
Reserved
R
0h
5-3
CLKOUT2DIV
R/W
0h
THis field controls the external clock divison factor
0x0 = DIV1 : SYS_CLKOUT2/1
0x1 = DIV2 : SYS_CLKOUT2/2
0x2 = DIV3 : SYS_CLKOUT2/3
0x3 = DIV4 : SYS_CLKOUT2/4
0x4 = DIV5 : SYS_CLKOUT2/5
0x5 = DIV6 : SYS_CLKOUT2/6
0x6 = DIV7 : SYS_CLKOUT2/7
0x7 = Reserved
2-0
CLKOUT2SOURCE
R/W
0h
This field selects the external output clock source
0x0 = SEL0 : Select 32KHz Oscillator O/P
0x1 = SEL1 : Select L3 Clock
0x2 = SEL2 : Select DDR PHY Clock
0x3 = SEL4 : Select 192Mhz clock from PER PLL
0x4 = SEL5 : Select LCD Pixel Clock
8.1.12.6 CM_RTC Registers
lists the memory-mapped registers for the CM_RTC. All register offset addresses not listed in
should be considered as reserved locations and the register contents should not be modified.
692
Power, Reset, and Clock Management (PRCM)
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated