12.1 Device-Specific Information

Table 12-1. Oscillator Summary Table
Clock GeneratorsPLLs
142
Table 12-2. CLKGEN Assignment
Clock GeneratorInput Clock Source Module Clock Destination
Clock Generator 1All SourcesSystem Clock and Peripheral Clock
Clock Generator 2FRCFRC
Clock Generator 3BFRCBFRC
Clock Generator 4All SourcesRAM BIST and NVM BIST
Clock Generator 5All SourcesPWM
Clock Generator 6All SourcesADC
Clock Generator 7All SourcesPDM DAC
Clock Generator 8All SourcesUART
Clock Generator 9All SourcesSPI
Clock Generator 10All SourcesCAN
Clock Generator 11All SourcesPTG
Clock Generator 12All SourcesBiSS
Clock Generator 13All SourcesCCP and REFO1
Clock Generator 14All SourcesCLC, IOIM and REFO2
Note: Clock generator 1, 2 and 3 are always ON.
Table 12-3. Clock Monitor CNTSEL/WINSEL Input Clock Selections
ValueDescription
0b11010REFI2 - Device REFI2 pin through PPS
0b11001REFI1 - Device REFI1 pin through PPS
0b11000-0b10101Reserved
0b10100BRFC/244
0b10011POSC - Primary crystal oscillator (4-32 MHz)
0b10010BFRC - Internal Backup 8 MHz RC oscillator
0b10001FRC - Internal 8 MHz RC oscillator
0b10000ISCP clock (PGC)
0b01111Reserved
0b01110PLL2 VCO DIV output
0b01101PLL2 FOUT output
0b01100PLL1 VCO DIV output
0b01011PLL1 FOUT output
0b01010 CLKGEN11
0b01001CLKGEN10
0b01000CLKGEN9
0b00111CLKGEN8
0b00110CLKGEN7
0b00101CLKGEN6
0b00100CLKGEN5
0b00011CLKGEN4
0b00010CLKGEN3
0b00001CLKGEN2
0b00000CLKGEN1
Note: Refer to Table 40-24 for minimum and maximum peripheral clock frequencies.
Table 12-4. PLL Clock Sources
ValueDescription
0b1111-0b1011Reserved
0b1010 REFI2 – User definable clock source
0b1001REFI1 – User definable clock source
0b1000-0b0100Reserved
0b0011POSC – Primary crystal oscillator (4-32 MHz)
0b0010BFRC – Internal Backup 8 MHz RC oscillator
0b0001FRC – Internal 8 MHz RC oscillator
0b0000Reserved - Serial Test Mode clock (PGC)
Table 12-5. Clock Generator Input Selection and Clock Monitor Resources
ValueDescription
0b1111-0b1011Reserved
0b1010 REFI2 – User definable clock source
0b1001REFI1 – User definable clock source
0b1000PLL2 VCO FracDiv output
0b0111PLL1 VCO FracDiv output
0b0110PLL2 FOUT output
0b0101PLL1 FOUT output
0b0100LPRC as BFRC/244
0b0011POSC – Primary crystal oscillator (4-32 MHz)
0b0010BFRC – Internal Backup 8 MHz RC oscillator
0b0001FRC – Internal 8 MHz RC oscillator
0b0000Reserved - Serial Test Mode clock (PGC)