PIC18F4550ESOSQTP datasheet(173/438 Pages) MICROCHIP

Part #	PIC18F4550ESOSQTP

Description	28/40/44-Pin, High-Performance, Enhanced Flash, USB Microcontrollerswith nanoWatt Technology

PDF	438 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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173 / 438 page

DS39632E-page 171

PIC18F2455/2550/4455/4550

USTAT: USB STATUS REGISTER

U-0

R-x

U-0

—

ENDP3

ENDP2

ENDP1

ENDP0

DIR

PPBI(1)

—

bit 7

bit 0

Legend:

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 7

Unimplemented: Read as ‘0’

bit 6-3

ENDP3:ENDP0: 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

bit 2

DIR: Last BD Direction Indicator bit

1 = The last transaction was an IN token

0 = The last transaction was an OUT or SETUP token

bit 1

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

bit 0

Unimplemented: Read as ‘0’

Note 1:

This bit is only valid for endpoints with available Even and Odd BD registers.

PIC18F4550ESOSQTP Datasheet(PDF) 173 Page - Microchip Technology

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