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21.6 MCLK AHB/APB Clock Enable Peripheral Mapping Table 21-2. MCLK AHB/APB Clock Enable Peripheral Mapping Peripheral BUS Clock Enable Mask Register Clock Enable Mask Bits Peripheral Bus CLKMSK[0] MASK0 DSU AHB MASK1 FCR AHB MASK2 FCW AHB MASK3 PM APB MASK4 SUPC APB MASK5 RSTC APB MASK6 OSCCTRL APB MASK7 OSC32KCTRL APB MASK8 GCLK APB MASK9 MCLK APB MASK10 FREQM APB MASK11 WDT APB MASK12 RTC APB MASK13 EIC APB MASK14 PAC APB MASK15 TRAM APB MASK21 MCRAMC APB MASK22 MCRAMC AHB MASK23 CAN0 AHB MASK24 CAN1 AHB MASK25 H2PB0 AHB MASK26 H2PB0 APB MASK27 PORT APB MASK28 DMAC AHB MASK29 DMAC APB MASK30 HMATRIX2 AHB MASK31 HMATRIX2 APB CLKMSK[1] MASK0 BROMC AHB MASK1 BROMC APB MASK2 IDAU APB MASK3 EVSYS APB MASK4 SERCOM0 APB MASK5 SERCOM1 APB MASK6 SERCOM2 APB MASK7 SERCOM3 APB MASK8 TCC0 APB MASK9 TCC1 APB MASK10 TCC2 APB MASK11 TCC3 APB MASK12 SERCOM4 APB MASK13 SERCOM5 APB MASK14 TCC4 APB MASK15 TCC5 APB MASK16 TCC6 APB MASK17 ADC APB MASK18 AC APB MASK19 PTC APB MASK20 CCL0 APB MASK21 CCL1 APB MASK22 USB AHB MASK23 USB APB MASK24 AT APB MASK25 H2PB1 AHB MASK26 H2PB1 APB MASK27 H2PB2 AHB MASK28 H2PB2 APB MASK30 HSM AHB MASK31 PUF APB
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