
2011-2012 Microchip Technology Inc.
Preliminary
DS61168D-page 137
PIC32MX1XX/2XX
REGISTER 10-12: U1ADDR: USB ADDRESS REGISTER
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
U-0
—
23:16
U-0
—
15:8
U-0
—
7:0
R/W-0
LSPDEN
DEVADDR<6:0>
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 31-8 Unimplemented: Read as ‘0’
bit 7
LSPDEN: Low Speed Enable Indicator bit
1 = Next token command to be executed at Low Speed
0 = Next token command to be executed at Full Speed
bit 6-0
DEVADDR<6:0>: 7-bit USB Device Address bits
REGISTER 10-13: U1FRML: USB FRAME NUMBER LOW REGISTER
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
U-0
—
23:16
U-0
—
15:8
U-0
—
7:0
R-0
FRML<7:0>
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 31-8 Unimplemented: Read as ‘0’
bit 7-0
FRML<7:0>: The 11-bit Frame Number Lower bits
The register bits are updated with the current frame number whenever a SOF TOKEN is received.