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AT91SAM7A2-AI Datasheet(PDF) 59 Page - ATMEL Corporation

Part # AT91SAM7A2-AI
Description  AT91 ARM Thumb-based Microcontrollers
PDF  369 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT91SAM7A2-AI Datasheet(HTML) 59 Page - ATMEL Corporation

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59
PRELIMINARY
AT91SAM7A2
6021A–ATARM–07/04
CM Master Clock Divider Register
Name:
CM_MDIV
Access:
Read/Write
Base Address:
0x00C
• MDIV[6:0]: Master Clock Divider
MDIV[6:0] is used to divide the MCK clock and generate the DIVCLK. Default value for MDIV[6:0] is 0x1F.
• MDIVKEY[15:0]: Key for Write Access into the CM_MDIV Register
Any write in the MDIV[6:0] bits will only be effective if the MDIVKEY[15:0] bits are equal to 0xACDC. These bits are always
read at 0.
31
30
29
28
27
26
25
24
MDIVKEY[15:8]
23
22
21
20
19
18
17
16
MDIVKEY[7:0]
15
14
13
12
11
10
9
8
––
–––
––
–
76
543
21
0
–MDIV[6:0]
DIVCLK
MCK
2MDIV[6:0]
1
)
+
(
×
---------------------------------------------------
=



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