DSPIC30F1010-20E Datasheet, PDF (203/286 Pages) Microchip Technology – dsPIC30F1010/202X Data Sheet

dsPIC30F1010/202X
REGISTER 18-2: OSCTUN: OSCILLATOR TUNING REGISTER
R/W-0
bit 15
R/W-0
R/W-0
TSEQ3<3:0>
R/W-0
R/W-0
R/W-0
R/W-0
TSEQ2<3:0>
R/W-0
bit 8
R/W-0
bit 7
R/W-0
R/W-0
TSEQ1<3:0>
R/W-0
R/W-0
R/W-0
R/W-0
TUN<3:0>
R/W-0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-12
bit 11-8
bit 7-4
bit 3-0
TSEQ3<3:0>: Tune Sequence Value #3 bits
When PWM ROLL<2:0> = 011, this field is used to tune the FRC instead of TUN<3:0>
TSEQ2<3:0>: Tune Sequence Value #2 bits
When PWM ROLL<2:0> = 010, this field is used to tune the FRC instead of TUN<3:0>
TSEQ1<3:0>: Tune Sequence Value #1 bits
When PWM ROLL<2:0> = 001, this field is used to tune the FRC instead of TUN<3:0>
TUN<3:0>: Specifies the user tuning capability for the internal fast RC oscillator . If the TSEQEN bit
in the OSCCON register is set, this field, along with bits TSEQ1-TSEQ7, will sequentially tune the
FRC oscillator.
0111 = Maximum frequency
0110 =
0101 =
0100 =
0011 =
0010 =
0001 =
0000 = Center frequency, oscillator is running at calibrated frequency
1111 =
1110 =
1101 =
1100 =
1011 =
1010 =
1001 =
1000 = Minimum frequency
© 2006 Microchip Technology Inc.
Preliminary
DS70178C-page 201