Data Sheet

206
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
16.8.18 DPLL Ratio Control
Name: DPLLRATIO
Offset: 0x48
Reset: 0x00000000
Property: Write-Protected
z Bits 31:20 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to
zero when this register is written. These bits will always return zero when read.
z Bits 19:16 – LDRFRAC[3:0]: Loop Divider Ratio Fractional Part
Write this field with the fractional part of the frequency multiplier.
z Bits 15:12 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to
zero when this register is written. These bits will always return zero when read.
z Bits 11:0 – LDR[11:0]: Loop Divider Ratio
Write this field with the integer part of the frequency multiplier.
Bit 3130292827262524
AccessRRRRRRRR
Reset00000000
Bit 2322212019181716
LDRFRAC[3:0]
AccessRRRRR/WR/WR/WR/W
Reset00000000
Bit 151413121110 9 8
LDR[11:8]
AccessRRRRR/WR/WR/WR/W
Reset00000000
Bit 76543210
LDR[7:0]
AccessR/WR/WR/WR/WR/WR/WR/WR/W
Reset00000000