Datasheet

PIC24FJ256DA210 FAMILY
DS39969B-page 246  2010 Microchip Technology Inc.
REGISTER 18-1: BDnSTAT: BUFFER DESCRIPTOR n STATUS REGISTER PROTOTYPE, USB
MODE (BD0STAT THROUGH BD63STAT)
R/W-x R/W-x R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC
UOWN DTS PID3 PID2 PID1 PID0 BC9 BC8
bit 15 bit 8
R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC R/W-x, HSC
BC7 BC6 BC5 BC4 BC3 BC2 BC1 BC0
bit 7 bit 0
Legend: HSC = Hardware Settable/Clearable bit
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 UOWN: USB Own bit
1 = The USB module owns the BD and its corresponding buffer; the CPU must not modify the BD or
the buffer
bit 14 DTS: Data Toggle Packet bit
1 = Data 1 packet
0 = Data 0 packet
bit 13-10 PID<3:0>: Packet Identifier bits (written by the USB module)
In Device mode:
Represents the PID of the received token during the last transfer.
In Host mode:
Represents the last returned PID or the transfer status indicator.
bit 9-0 BC<9:0>: 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.