795
11100B–ATARM–31-Jul-12
SAM4S Series [Preliminary]
34.8.15
USART Baud Rate Generator Register
Name:
US_BRGR
Address:
0x40024020 (0), 0x40028020 (1)
Access:
Read-write
This register can only be written if the WPEN bit is cleared in
“USART Write Protect Mode Register” on page 803
• CD: Clock Divider
• FP: Fractional Part
0: Fractional divider is disabled.
1 - 7: Baudrate resolution, defined by FP x 1/8.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
FP
15
14
13
12
11
10
9
8
CD
7
6
5
4
3
2
1
0
CD
CD
USART_MODE
≠
ISO7816
USART_MODE =
ISO7816
SYNC = 0
SYNC = 1
or
USART_MODE = SPI
(Master or Slave)
OVER = 0
OVER = 1
0
Baud Rate Clock Disabled
1 to 65535
Baud Rate =
Selected Clock/(16*CD)
Baud Rate =
Selected Clock/(8*CD)
Baud Rate =
Selected Clock /CD
Baud Rate = Selected
Clock/(FI_DI_RATIO*CD)
Summary of Contents for SAM4S Series
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Page 412: ...412 11100B ATARM 31 Jul 12 SAM4S Series Preliminary ...
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Page 1143: ...1143 11100B ATARM 31 Jul 12 SAM4S Series Preliminary Figure 43 4 64 lead LQFP Package Drawing ...
Page 1145: ...1145 11100B ATARM 31 Jul 12 SAM4S Series Preliminary Figure 43 5 64 lead QFN Package Drawing ...