PIC16LF1454 Datasheet, PDF (328/418 Pages) Microchip Technology – 14/20-Pin Flash, 8-Bit USB Microcontrollers with XLP Technology

PIC16(L)F1454/5/9
REGISTER 26-3: USTAT: USB STATUS REGISTER
U-0
—
bit 7
R-x
R-x
R-x
R-x
ENDP<3:0>
R-x
R-x
U-0
DIR
PPBI⁽¹⁾
—
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 7
bit 6-3
bit 2
bit 1
bit 0
Unimplemented: Read as ‘0’
ENDP<2:0>: Encoded Number of Last Endpoint Activity bits
(represents the number of the BDT updated by the last USB transfer)
1111 = Endpoint 15
1110 = Endpoint 14
•
•
•
0001 = Endpoint 1
0000 = Endpoint 0
DIR: Last BD Direction Indicator bit
1 = The last transaction was an IN token
0 = The last transaction was an OUT or SETUP token
PPBI: Ping-Pong BD Pointer Indicator bit⁽¹⁾
1 = The last transaction was to the Odd BD bank
0 = The last transaction was to the Even BD bank
Unimplemented: Read as ‘0’
Note 1: This bit is only valid for endpoints with available Even and Odd BD registers.
DS41639A-page 328
Preliminary
 2012 Microchip Technology Inc.