PIC18F25J50 MICROCHIP [Microchip Technology], PIC18F25J50 Datasheet - Page 361

• Manufacturer Part Number: PIC18F25J50
• Description: 28/44-Pin, Low-Power, High-Performance USB Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

REGISTER 22-2:
 2011 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1-0
Note 1:
UTEYE
R/W-0
2:
3:
The UPUEN, UTRDIS and FSEN bits should never be changed while the USB module is enabled. These
values must be preconfigured prior to enabling the module.
This bit is only valid when the on-chip transceiver is active (UTRDIS = 0); otherwise, it is ignored.
If UTRDIS is set, the UOE signal will be active, independent of the UOEMON bit setting.
UTEYE: USB Eye Pattern Test Enable bit
1 = Eye pattern test is enabled
0 = Eye pattern test is disabled
UOEMON: USB OE Monitor Enable bit
1 = UOE signal is active, indicating intervals during which the D+/D- lines are driving
0 = UOE signal is inactive
Unimplemented: Read as ‘0’
UPUEN: USB On-Chip Pull-up Enable bit
1 = On-chip pull-up is enabled (pull-up on D+ with FSEN = 1 or D- with FSEN = 0)
0 = On-chip pull-up is disabled
UTRDIS: On-Chip Transceiver Disable bit
1 = On-chip transceiver is disabled
0 = On-chip transceiver is active
FSEN: Full-Speed Enable bit
1 = Full-speed device: controls transceiver edge rates; requires input clock at 48 MHz
0 = Low-speed device: controls transceiver edge rates; requires input clock at 6 MHz
PPB<1:0>: Ping-Pong Buffers Configuration bits
11 = Even/Odd ping-pong buffers are enabled for Endpoints 1 to 15
10 = Even/Odd ping-pong buffers are enabled for all endpoints
01 = Even/Odd ping-pong buffer are enabled for OUT Endpoint 0
00 = Even/Odd ping-pong buffers are disabled
UOEMON
R/W-0
UCFG: USB CONFIGURATION REGISTER (BANKED F39h)
W = Writable bit
‘1’ = Bit is set
U-0
—
(1)
UPUEN
R/W-0
(1,2)
(1,2)
(1,3)
U = Unimplemented bit, read as ‘0’
UTRDIS
‘0’ = Bit is cleared
PIC18F46J50 FAMILY
R/W-0
(1,3)
FSEN
R/W-0
(1)
x = Bit is unknown
R/W-0
PPB1
DS39931D-page 361
R/W-0
PPB0
bit 0