PIC32MX440F256H-80I Datasheet, PDF (257/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
REGISTER 11-5: U1PWRC: USB POWER CONTROL REGISTER
r-x
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
—
bit 31
bit 24
r-x
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
—
bit 23
bit 16
r-x
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
—
bit 15
bit 8
R-0
r-x
UACTPND
—
bit 7
r-x
R/W-0
r-x
—
USLPGRD
—
r-x
R/W-0
R/W-0
—
USUSPEND USBPWR
bit 0
Legend:
R = Readable bit
U = Unimplemented bit
W = Writable bit
P = Programmable bit
-n = Bit Value at POR: (‘0’, ‘1’, x = Unknown)
r = Reserved bit
bit 31-8
bit 7
bit 6-5
bit 4
bit 3-2
bit 1
bit 0
Reserved: Write ‘0’; ignore read
UACTPND: USB Suspend Mode bit
1 = USB bus activity has been detected; but an interrupt is pending, it has not been generated yet
0 = An interrupt is not pending
Reserved: Write ‘0’; ignore read
USLPGRD: USB Sleep Entry Guard bit
1 = Sleep entry is blocked if USB bus activity is detected or if a notification is pending
0 = USB module does not block Sleep entry
Reserved: Write ‘0’; ignore read
USUSPEND: USB Suspend Mode bit
1 = USB module is placed in suspend mode
(The 48 MHz USB clock will be gated off. The transceiver is placed in a low-power state.)
0 = USB module operates normally.
USBPWR: USB Operation Enable bit
1 = USB module is turned on
0 = USB module is disabled
(Outputs held inactive, device pins not used by USB, analog features are shut-down to reduce
power consumption.)
© 2008 Microchip Technology Inc.
Preliminary
DS61143E-page 255