PIC24FJ256GB106-I Datasheet, PDF (201/328 Pages) Microchip Technology – 64/80/100-Pin, 16-Bit Flash Microcontrollers with USB On-The-Go (OTG)

PIC24FJ256GB110 FAMILY
REGISTER 17-2: BDnSTAT: BUFFER DESCRIPTOR n STATUS REGISTER PROTOTYPE, CPU
MODE (BD0STAT THROUGH BD63STAT)
R/W-x
UOWN
bit 15
R/W-x
DTS⁽¹⁾
R/W-x
0
R/W-x
0
R/W-x
DTSEN
R/W-x
BSTALL
R/W-x
BC9
R/W-x
BC8
bit 8
R/W-x
BC7
bit 7
R/W-x
BC6
R/W-x
BC5
R/W-x
BC4
R/W-x
BC3
R/W-x
BC2
R/W-x
BC1
R/W-x
BC0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
bit 14
bit 13-12
bit 11
bit 10
bit 9-0
UOWN: USB Own bit
0 = The microcontroller core owns the BD and its corresponding buffer. The USB module ignores all
other fields in the BD.
DTS: Data Toggle Packet bit⁽¹⁾
1 = Data 1 packet
0 = Data 0 packet
Reserved Function: Maintain as ‘0’
DTSEN: Data Toggle Synchronization Enable bit
1 = Data toggle synchronization is enabled; data packets with incorrect sync value will be ignored
0 = No data toggle synchronization is performed
BSTALL: Buffer Stall Enable bit
1 = Buffer STALL enabled; STALL handshake issued if a token is received that would use the BD in
the given location (UOWN bit remains set, BD value is unchanged); corresponding EPSTALL bit
will get set on any STALL handshake
0 = Buffer STALL disabled
BC9:BC0: Byte Count bits
This represents the number of bytes to be transmitted or the maximum number of bytes to be received
during a transfer. Upon completion, the byte count is updated by the USB module with the actual
number of bytes transmitted or received.
Note 1: This bit is ignored unless DTSEN = 1.
© 2008 Microchip Technology Inc.
Preliminary
DS39897B-page 199