Datasheet

dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
DS70616F-page 394 Preliminary © 2009-2012 Microchip Technology Inc.
REGISTER 22-11: UxCNFG2: USB CONFIGURATION REGISTER 2
U-0 U-0 U-0 U-0 U-0 U-0 U-0 U-0
— — — — — — — —
bit 15 bit 8
U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
— —
UVCMPSEL PUVBUS EXTI2CEN
UVBUSDIS
(1)
UVCMPDIS
(1)
UTRDIS
(1)
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 15-6 Unimplemented: Read as ‘0’
bit 5
UVCMPSEL: External Comparator Input Mode Select bit
When UVCMPDIS is set:
1 = Use 3 pin input for external comparators
0 = Use 2 pin input for external comparators
bit 4 PUVBUS: V
BUS Pull-up Enable bit
1 = Pull-up on VBUS pin enabled
0 = Pull-up on V
BUS pin disabled
bit 3 EXTI2CEN: I
2
C™ Interface For External Module Control Enable bit
1 = External module(s) controlled via I
2
C interface
0 = External module(s) controller via dedicated pins
bit 2 UVBUSDIS: On-Chip 5V Boost Regulator Builder Disable bit
(1)
1 = On-chip boost regulator builder disabled; digital output control interface enabled
0 = On-chip boost regulator builder active
bit 1 UVCMPDIS: On-Chip VBUS Comparator Disable bit
(1)
1 = On-chip charge VBUS comparator disabled; digital input status interface enabled
0 = On-chip charge VBUS comparator active
bit 0 UTRDIS: On-Chip Transceiver Disable bit
(1)
1 = On-chip transceiver disabled; digital transceiver interface enabled
0 = On-chip transceiver active
Note 1: Do not change this bit while the USBPWR bit is set (UxPWRC<0> = 1).