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PC7447AMGH1000LB データシート(PDF) 18 Page - ATMEL Corporation

部品番号 PC7447AMGH1000LB
部品情報  PowerPC RISC microprocessor
PDF  44 Pages
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メーカー  ATMEL [ATMEL Corporation]
ホームページ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

PC7447AMGH1000LB データシート(HTML) 18 Page - ATMEL Corporation

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18
5387B–HIREL–07/05
PC7447A [Preliminary]
6.4.4.5
Bus-to-Core Multiplier Constraints with DFS
DFS is not available for all bus-to-core multipliers as configured by PLL_CFG[0:4] during hard
reset. Specifically, because the PC7447A does not support quarter clock ratios or the 1x multi-
plier, the DFS feature is limited to integer PLL multipliers of 4x and higher. The complete listing
is shown in Table 6-5 on page 18.
Table 6-5.
Valid Divide Ratio Configurations
Bus-to-Core Multiplier Configured by
PLL_CFG[0:4] (see Table 13-1 on page 35)
Bus-to-Core Multiplier with
HID1[DFS1] = 1 (÷2)
2x
N/A
3x
N/A
4x
2x
5x
2.5x
5.5x
2x
6x
3x
6.5x
N/A
7x
3.5x
7.5x
N/A
8x
4x
8.5x
N/A
9x
4.5x
9.5x
N/A
10x
5x
10.5x
N/A
11x
5.5x
11.5x
N/A
12x
6x
12.5x
N/A
13x
6.5x
13.5x
N/A
14x
7x
15x
7.5x
16x
8x
17x
8.5x
18x
9x
20x
10x
21x
10.5x
24x
12x
28x
14x



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