USB Registers
16.5.4.6 PWR_CNTL Register (offset = 18h) [reset = 400000h]
PWR_CNTL is shown in
and described in
.
has all the power control bits
Figure 16-139. PWR_CNTL Register
31
30
29
28
27
26
25
24
RESETDONETCLK
RESET_DONE_VMAI VMAIN_GLOBAL_RE
RESETDONEMCLK
RESETDONE_CHGD
LDOPWRCOUNTER
N
SET_DONE
ET
R-0h
R-0h
R-0h
R-0h
R-0h
R/W-400h
23
22
21
20
19
18
17
16
LDOPWRCOUNTER
R/W-400h
15
14
13
12
11
10
9
8
LDOPWRCOUNTER
FORCEPLLSLOWCL
FORCELDOON
FORCEPLLON
Reserved
K
R/W-400h
R/W-0h
R/W-0h
R/W-0h
R/W-0h
7
6
5
4
3
2
1
0
Reserved
PLLLOCK
USEPLLLOCK
USE_DATAPOLARIT
DATAPOLARITYN
USE_PD_REG
PD
Reserved
YN_REG
R/W-0h
R-0h
R/W-0h
R/W-0h
R/W-0h
R/W-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 16-150. PWR_CNTL Register Field Descriptions
Bit
Field
Type
Reset
Description
31
RESETDONETCLK
R
0h
Goes high when the RESET is synchronized to TCLK
30
RESET_DONE_VMAIN
R
0h
Goes high when LDO domain is up and PLL LOCK is available and
utmi_reset is de-asserted.
29
VMAIN_GLOBAL_RESET
R
0h
Goes high when LDO domain is up and PLL LOCK is available.
_DONE
28
RESETDONEMCLK
R
0h
Goes high when the RESET is synchronized to MCLK
27
RESETDONE_CHGDET
R
0h
Goes high when the RESET is synchronized to charger detect
oscillator clock domain
26-12
LDOPWRCOUNTER
R/W
400h
This is the value of the counter used for LDO power up.
RESET to default.
11
FORCEPLLSLOWCLK
R/W
0h
Forces the PLL to the slow clk mode
10
FORCELDOON
R/W
0h
Forces the LDO to be ON.
9
FORCEPLLON
R/W
0h
Forces the PLL to be ON.
8-7
Reserved
R/W
0h
6
PLLLOCK
R
0h
Lock signal from the PLL
5
USEPLLLOCK
R/W
0h
This signal is used to indicate to the Phy, not to do any clock related
activity until PLLLOCK = 1 .This is not the default option.0 do not
use PLLLOCK.
1 use PLLLOCK as a clock gate.
4
USE_DATAPOLARITYN_
R/W
0h
1 -andgt
REG
use bit 3 as override for the DATAPOLARITYN signal.
3
DATAPOLARITYN
R/W
0h
Override value of datapolarityn
2
USE_PD_REG
R/W
0h
Use bit 1 from this register as PD override when set to '1'
1
PD
R/W
0h
Override value for PD
0
Reserved
R/W
0h
1910
Universal Serial Bus (USB)
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated