Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Ficha De Dados
Códigos do produto
ATSAMD20-XPRO
61
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
12.13.9 CoreSight ROM Table Entry n
Name:
ENTRYn
Offset:
0x1000+n*0x4 [n=0..1]
Reset:
0xXXXXX00X
Property:
Write-Protected
z
Bits 31:12 – ADDOFF[19:0]: Address Offset
The base address of the component, relative to the base address of this ROM table.
The base address of the component, relative to the base address of this ROM table.
z
Bits 11:2 – 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.
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
Bit 1 – FMT: Format
Always read as one, indicates a 32-bit ROM table.
Always read as one, indicates a 32-bit ROM table.
z
Bit 0 – EPRES: Entry Present
This bit indicates whether an entry is present at this location in the ROM table.
This bit indicates whether an entry is present at this location in the ROM table.
This bit is set at powerup if the device is not protected indicating that the entry is not present.
This bit is cleared at powerup if the device is not protected indicating that the entry is present.
Bit
31
30
29
28
27
26
25
24
ADDOFF[19:12]
Access
R
R
R
R
R
R
R
R
Reset
X
X
X
X
X
X
X
X
Bit
23
22
21
20
19
18
17
16
ADDOFF[11:4]
Access
R
R
R
R
R
R
R
R
Reset
X
X
X
X
X
X
X
X
Bit
15
14
13
12
11
10
9
8
ADDOFF[3:0]
Access
R
R
R
R
R
R
R
R
Reset
X
X
X
X
0
0
0
0
Bit
7
6
5
4
3
2
1
0
FMT
EPRES
Access
R
R
R
R
R
R
R
R
Reset
0
0
0
0
0
0
1
X