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AT91 Datasheet(PDF) 118 Page - ATMEL Corporation

Part # AT91
Description  ARM® Thumb® Microcontrollers
PDF  153 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT91 Datasheet(HTML) 118 Page - ATMEL Corporation

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118
AT91X40 Series
1354D–ATARM–08/02
USART Baud Rate Generator Register
Name:
US_BRGR
Access Type:Read/Write
Reset Value:0
Offset:
0x20
• CD: Clock Divisor
This register has no effect if Synchronous Mode is selected with an external clock.
Notes:
1. Clock divisor bypass (CD = 1) must not be used when internal clock MCK is selected (USCLKS = 0).
2. In Synchronous Mode, the value programmed must be even to ensure a 50:50 mark:space ratio.
31
30
29
28
27
26
25
24
––
–––
––
–
23
22
21
20
19
18
17
16
––
–––
––
–
15
14
13
12
11
10
9
8
CD
76
54
32
10
CD
CD
Effect
0
Disables Clock
1
Clock Divisor Bypass (1)
2 to 65535
Baud Rate (Asynchronous Mode) = Selected Clock / (16 x CD)
Baud Rate (Synchronous Mode) = Selected Clock / CD (2)



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