Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Fiche De Données
Codes de produits
ATSAMD21-XPRO
546
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
27.8.2.3 Baud Rate
Name:
BAUD
Offset:
0x0C
Reset:
0x0000
Property:
Write-Protected, Enable-Protected
z
Bits 31:24 – HSBAUDLOW[7:0]: High Speed Master Baud Rate Low
HSBAUDLOW not equal to 0
HSBAUDLOW indicates the SCL low time according to the following formula.
HSBAUDLOW not equal to 0
HSBAUDLOW indicates the SCL low time according to the following formula.
HSBAUDLOW equal to 0
The HSBAUD register is used to time T
The HSBAUD register is used to time T
LOW,
T
HIGH,
T
SU;STO,
T
HD;STA
and T
SU;STA.
. T
BUF
is timed by the BAUD register.
z
Bits 23:16 – HSBAUD[7:0]: High Speed Master Baud Rate
The HSBAUD register indicates the SCL high time according to the following formula. When HSBAUDLOW is
zero, T
The HSBAUD register indicates the SCL high time according to the following formula. When HSBAUDLOW is
zero, T
LOW,
T
HIGH,
T
SU;STO,
T
HD;STA
and T
SU;STA
are derived using this formula. T
BUF
is timed by the BAUD register.
z
Bits 15:8 – BAUDLOW[7:0]: Master Baud Rate Low
If the Master Baud Rate Low bit group (BAUDLOW) has a non-zero value, the SCL low time will be described by
the value written.
If the Master Baud Rate Low bit group (BAUDLOW) has a non-zero value, the SCL low time will be described by
the value written.
Bit
31
30
29
28
27
26
25
24
HSBAUDLOW[7:0]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
23
22
21
20
19
18
17
16
HSBAUD[7:0]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
BAUDLOW[7:0]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
BAUD[7:0]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
1
−
=
T
f
LOW
GCLK
HSBAUDLOW
1
−
=
T
f
HIGH
GCLK
BAUD