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Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet

Product codes
ATSAMD21-XPRO
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31.7 Register Summary
The register mapping depends on the Operating Mode field in the Control A register (CTRLA.MODE). The 
register summary is detailed below.
31.7.1 Common Device Host Summary
Table 31-1.
Common Register Summary
31.7.2 Device Summary
Table 31-2.
General Device Registers Summary
Offset
Name
Bit 
Pos.
0x00
7:0
MODE
RUNSTBY
ENABLE
SWRST
0x01
Reserved
0x02
7:0
ENABLE
SWRST
0x03
7:0
DQOS[1:0]
CQOS[1:0]
0x0D
7:0
FSMSTATE[6:0]
0x24
7:0
DESCADD[7:0]
0x25
15:8
DESCADD[15:8]
0x26
23:16
DESCADD[23:16]
0x27
31:24
DESCADD[31:24]
0x28
7:0
TRANSN[1:0]
TRANSP[4:0]
0x29
15:8
TRIM[2:0]
TRANSN[4:2]
Offset
Name
Bit 
Pos.
0x04
Reserved
0x05
Reserved
0x06
Reserved
0x07
Reserved
0x08
7:0
NREPLY
SPDCONF[1:0]
UPRSM
DETACH
0x09
15:8
LPMHDSK[1:0]
GNAK
0x0A
ADDEN
DADD[6:0]
0x0B
Reserved
0x0C
7:0
LINESTATE[1:0]
SPEED[1:0]
0x0E
Reserved
0x0F
Reserved
0x10
7:0
FNUM[4:0]
0x11
15:8
FNCERR
FNUM[10:5]
0x12
Reserved
0x14
7:0
RAMACER
UPRSM
EORSM
WAKEUP
EORST
SOF
SUSPEND
0x15
15:8
LPMSUSP
LPMNYET
0x16
Reserved
0x17
Reserved