PIC32MX440F256H-80I Datasheet, PDF (273/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
REGISTER 11-16: U1SOF: USB SOF COUNTER REGISTER
r-x
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
—
bit 31
bit 24
r-x
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
—
bit 23
bit 16
r-x
r-x
r-x
r-x
r-x
r-x
r-x
r-x
—
—
—
—
—
—
—
—
bit 15
bit 8
R/W-0
bit 7
R/W-0
R/W-0
R/W-0
R/W-0
CNT<7:0>
R/W-0
R/W-0
r-x
bit 0
Legend:
R = Readable bit
U = Unimplemented bit
W = Writable bit
P = Programmable bit
-n = Bit Value at POR: (‘0’, ‘1’, x = Unknown)
r = Reserved bit
bit 31-8
bit 7-0
Reserved: Write ‘0’; ignore read
CNT<7:0>: SOF Threshold Value bits
Typical values of the threshold are:
0100 1010 = 64-byte packet
0010 1010 = 32-byte packet
0001 1010 = 16-byte packet
0001 0010 = 8-byte packet
© 2008 Microchip Technology Inc.
Preliminary
DS61143E-page 271