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參數(shù)資料
| 型號： | MPC8309CVMAGDCA |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 400 MHz, RISC PROCESSOR, PBGA489 |
| 封裝： | 19 X 19 MM, 1.61 MM HEIGHT, 0.80 MM PITCH, LEAD FREE, PLASTIC, MAPBGA-489 |
| 文件頁數(shù)： | 69/81頁 |
| 文件大?。?/td> | 484K |
| 代理商： | MPC8309CVMAGDCA |
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MPC8309 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 1
Freescale Semiconductor
71
Clocking
NOTE
The VCO divider (RCWL[CEVCOD]) must be set properly so that the
QUICC Engine VCO frequency is in the range of 300–600 MHz. The
QUICC Engine frequency is not restricted by the CSB and core frequencies.
The CSB, core, and QUICC Engine frequencies should be selected
according to the performance requirements.
The QUICC Engine VCO frequency is derived from the following
equations:
qe_clk = (primary clock input × CEPMF)
(1 + CEPDF)
QUICC Engine VCO Frequency = qe_clk × VCO divider × (1 + CEPDF)
23.7
Suggested PLL Configurations
To simplify the PLL configurations, the MPC8309 might be separated into two clock domains. The first
domain contains the CSB PLL and the core PLL. The core PLL is connected serially to the CSB PLL, and
has the csb_clk as its input clock. The second clock domain has the QUICC Engine PLL. The clock
domains are independent, and each of their PLLs is configured separately.
The following table shows suggested PLL configurations for 33 and 66 MHz input clocks.
Table 63. Suggested PLL Configurations
Conf No.
SPMF
Core
PLL
CEPMF
CEDF
Input Clock
Frequency
(MHz)
CSB
Frequency
(MHz)
Core
Frequency
(MHz)
QUICC
Engine
Frequency
(MHz)
1
0100
0000100
0111
0
33.33
133.33
266.66
233
2
0010
0000100
0111
1
66.67
133.33
266.66
233
3
0100
0000101
0111
0
33.33
133.33
333.33
233
4
0101
0000101
1001
0
25
125
312.5
225
5
0010
0000101
0111
1
66.67
133.33
333.33
233
6
0100
0000110
0111
0
33.33
133.33
399.96
233
7
0101
0000110
1000
0
25
125
375
225
8
0010
0000110
0011
0
66.67
133.33
399.96
233
9
0101
0000101
0111
0
33.33
166.67
416.67
233
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| MPC8309EC | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications |
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