CONTROL_MODULE Registers
9.3.23 usb_ctrl1 Register (offset = 628h) [reset = 0h]
usb_ctrl1 is shown in
and described in
.
Figure 9-26. usb_ctrl1 Register
31
30
29
28
27
26
25
24
Reserved
R/W-3Ch
23
22
21
20
19
18
17
16
datapolarity_inv
Reserved
Reserved
otgsessenden
otgvdet_en
dmgpio_pd
dpgpio_pd
Reserved
R/W-0h
R-0h
R-0h
R/W-0h
R/W-0h
R/W-0h
R/W-0h
R/W-0h
15
14
13
12
11
10
9
8
Reserved
gpio_sig_cross
gpio_sig_inv
gpiomode
Reserved
cdet_extctl
dppullup
dmpullup
R/W-0h
R/W-0h
R/W-0h
R/W-0h
R/W-0h
R/W-0h
R/W-0h
R/W-0h
7
6
5
4
3
2
1
0
chgvsrc_en
chgisink_en
sinkondp
srcondm
chgdet_rstrt
chgdet_dis
otg_pwrdn
cm_pwrdn
R/W-0h
R/W-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 9-33. usb_ctrl1 Register Field Descriptions
Bit
Field
Type
Reset
Description
31-24
Reserved
R/W
3Ch
Reserved. Any writes to this register must keep these bits set to
0x3C.
23
datapolarity_inv
R/W
0h
Data Polarity Invert:
0: DP/DM (normal polarity matching port definition)
1: DM/DP (inverted polarity of port definition)
22
Reserved
R
0h
21
Reserved
R
0h
20
otgsessenden
R/W
0h
Session End Detect Enable
0: Disable Session End Comparator
1: Turns on Session End Comparator
19
otgvdet_en
R/W
0h
VBUS Detect Enable
0: Disable VBUS Detect Enable
1: Turns on all comparators except Session End comparator
18
dmgpio_pd
R/W
0h
Pulldown on DM in GPIO Mode
0: Enables pulldown
1: Disables pulldown
17
dpgpio_pd
R/W
0h
Pulldown on DP in GPIO Mode
0: Enables pulldown
1: Disables pulldown
16
Reserved
R/W
0h
15
Reserved
R/W
0h
14
gpio_sig_cross
R/W
0h
UART TX -> DM
UART RX -> DP
13
gpio_sig_inv
R/W
0h
UART TX -> INV -> DP
UART RX -> INV -> DM
12
gpiomode
R/W
0h
GPIO Mode
0: USB Mode
1: GPIO Mode (UART)
11
Reserved
R/W
0h
10
cdet_extctl
R/W
0h
Bypass the charger detection state machine
0: Charger detection on
1: Charger detection is bypassed
9
dppullup
R/W
0h
Pullup on DP line
0: No effect
1: Enable pullup on DP line
786
Control Module
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated