PIC18F47J53 Datasheet, PDF (381/586 Pages) Microchip Technology – 28/44-Pin, High-Performance USB Microcontrollers with nanoWatt XLP Technology

PIC18F47J53 FAMILY
REGISTER 23-1: UCON: USB CONTROL REGISTER (ACCESS F65h)
U-0
—
bit 7
R/W-0
R-x
PPBRST⁽²⁾
SE0
R/C-0
PKTDIS
R/W-0
USBEN⁽¹⁾
R/W-0
RESUME
R/W-0
SUSPND
U-0
—
bit 0
Legend:
R = Readable bit
-n = Value at POR
C = Clearable bit
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
Unimplemented: Read as ‘0’
bit 6
PPBRST: Ping-Pong Buffers Reset bit⁽²⁾
1 = Reset all Ping-Pong Buffer Pointers to the Even Buffer Descriptor (BD) banks
0 = Ping-Pong Buffer Pointers are not being reset
bit 5
SE0: Live Single-Ended Zero Flag bit
1 = Single-ended zero is active on the USB bus
0 = No single-ended zero is detected
bit 4
PKTDIS: Packet Transfer Disable bit
1 = SIE token and packet processing are disabled, automatically set when a SETUP token is received
0 = SIE token and packet processing are enabled
bit 3
USBEN: USB Module Enable bit⁽¹⁾
1 = USB module and supporting circuitry are enabled (device attached)
0 = USB module and supporting circuitry are disabled (device detached)
bit 2
RESUME: Resume Signaling Enable bit
1 = Resume signaling is activated
0 = Resume signaling is disabled
bit 1
SUSPND: Suspend USB bit
1 = USB module and supporting circuitry are in Power Conserve mode, SIE clock inactive
0 = USB module and supporting circuitry are in normal operation, SIE clocked at the configured rate
bit 0
Unimplemented: Read as ‘0’
Note 1: Make sure the USB clock source is correctly configured before setting this bit.
2: There should be at least four cycles of delay between the setting and PPBRST.
 2010 Microchip Technology Inc.
Preliminary
DS39964B-page 381