Microchip Technology DV320032 Data Sheet
2012-2013 Microchip Technology Inc.
DS60001185C-page 119
PIC32MX330/350/370/430/450/470
REGISTER 8-4:
REFOTRIM: REFERENCE OSCILLATOR TRIM 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
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ROTRIM<8:1>
23:16
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
ROTRIM<0>
—
—
—
—
—
—
—
15:8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
7:0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
Legend:
y = Value set from Configuration bits on POR
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 31-23 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
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:
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’.
also set to ‘1’.