PIC32MX1XX Datasheet, PDF (103/320 Pages) Microchip Technology – 32-bit Microcontrollers (up to 128 KB Flash and 32 KB SRAM) with Audio and Graphics Interfaces, USB, and Advanced Analog

PIC32MX1XX/2XX
REGISTER 8-4: REFOTRIM: REFERENCE OSCILLATOR TRIM REGISTER^(1,2)
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Range 31/23/15/7 30/22/14/6 29/21/13/5 28/20/12/4 27/19/11/3 26/18/10/2 25/17/9/1
31:24
R/W-0
23:16
15:8
7:0
R/W-0
ROTRIM<0>
U-0
—
U-0
—
R/W-0
R-0
—
R-0
—
U-0
—
R/W-0
U-0
—
U-0
—
U-0
—
R/W-0
R/W-0
ROTRIM<8:1>
U-0
U-0
—
—
U-0
U-0
—
—
U-0
U-0
—
—
R/W-0
U-0
—
U-0
—
U-0
—
R/W-0
U-0
—
U-0
—
U-0
—
Bit
24/16/8/0
R/W-0
U-0
—
U-0
—
U-0
—
Legend:
R = Readable bit
-n = Value at POR
y = Value set from Configuration bits on POR
W = Writable bit
U = Unimplemented bit, read as ‘0’
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 31-23 ROTRIM<8:0>: Reference Oscillator Trim bits
111111111 = 511/512 divisor added to RODIV value
111111110 = 510/512 divisor added to RODIV value
•
•
•
100000000 = 256/512 divisor added to RODIV value
•
•
•
000000010 = 2/512 divisor added to RODIV value
000000001 = 1/512 divisor added to RODIV value
000000000 = 0/512 divisor added to RODIV value
bit 22-0 Unimplemented: Read as ‘0’
Note 1: While the ON bit (REFOCON<15>) is ‘1’, writes to this register do not take effect until the DIVSWEN bit is
also set to ‘1’.
2: This register is not available on all devices. Refer to the specific device data sheet for availability.
© 2011-2012 Microchip Technology Inc.
Preliminary
DS61168D-page 103