Microchip Technology AC164139 Data Sheet
PIC24FJ256DA210 FAMILY
DS39969B-page 260
2010 Microchip Technology Inc.
REGISTER 18-8:
U1CON: USB CONTROL REGISTER (HOST MODE ONLY)
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
R-x, HSC
R-x, HSC
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
JSTATE
SE0
TOKBUSY
USBRST
HOSTEN
RESUME
PPBRST
SOFEN
bit 7
bit 0
Legend:
U = Unimplemented bit, read as ‘0’
R = Readable bit
W = Writable bit
HSC = Hardware Settable/Clearable bit
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-8
Unimplemented: Read as ‘0’
bit 7
JSTATE: Live Differential Receiver J State Flag bit
1
= J state (differential ‘0’ in low speed, differential ‘1’ in full speed) is detected on the USB
0
= No J state is detected
bit 6
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 5
TOKBUSY: Token Busy Status bit
1
= Token is being executed by the USB module in On-The-Go state
0
= No token is being executed
bit 4
USBRST: Module Reset bit
1
= USB Reset has been generated; for software Reset, application must set this bit for 50 ms, then
clear it
0
= USB Reset is terminated
bit 3
HOSTEN: Host Mode Enable bit
1
= USB host capability is enabled; pull-downs on D+ and D- are activated in hardware
0
= USB host capability is disabled
bit 2
RESUME: Resume Signaling Enable bit
1
= Resume signaling is activated; software must set bit for 10 ms and then clear to enable remote
wake-up
0
= Resume signaling is disabled
bit 1
PPBRST: Ping-Pong Buffers Reset bit
1
= Reset all Ping-Pong Buffer Pointers to the even BD banks
0
= Ping-Pong Buffer Pointers are not reset
bit 0
SOFEN: Start-Of-Frame Enable bit
1
= Start-Of-Frame token is sent every one 1 ms
0
= Start-Of-Frame token is disabled