Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
819
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
36.8.15 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 Protection Mode Register” on page 827.
• CD: Clock Divider
• FP: Fractional Part
0: Fractional divider is disabled.
1–7: Baud rate resolution, defined by FP x 1/8.
1–7: Baud rate 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)
Selected Clock/(16*CD)
Baud Rate =
Selected Clock/(8*CD)
Selected Clock/(8*CD)
Baud Rate =
Selected Clock/CD
Selected Clock/CD
Baud Rate =
Selected
Selected
Clock/(FI_DI_RATIO*CD)