參數(shù)資料
型號(hào): MPC8379ECVRANGA
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, MICROPROCESSOR, PBGA689
封裝: 31 X 31 MM, 2.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-689
文件頁(yè)數(shù): 3/114頁(yè)
文件大小: 1337K
代理商: MPC8379ECVRANGA
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MPC8379E PowerQUICC II Pro Processor Hardware Specifications, Rev. 2
100
Freescale Semiconductor
Clocking
22.2
Core PLL Configuration
RCWL[COREPLL] selects the ratio between the internal coherent system bus clock (csb_clk) and the e300
core clock (core_clk). Table 75 shows the encodings for RCWL[COREPLL]. COREPLL values that are
not listed in Table 75 should be considered as reserved.
NOTE
Core VCO frequency = core frequency
× VCO divider
VCO divider has to be set properly so that the core VCO frequency is in the
range of 800–1600 MHz.
Low
0110
6 : 1
150
200
Low
0111
7 : 1
175
233
Low
1000
8 : 1
200
266
Low
1001
9 : 1
225
300
Low
1010
10 : 1
250
333
Low
1011
11 : 1
275
Low
1100
12 : 1
300
Low
1101
13 : 1
325
Low
1110
14 : 1
Low
1111
15 : 1
1
CFG_CLKIN_DIV doubles csb_clk if set high.
2
CLKIN is the input clock in host mode; PCI_CLK is the input clock in agent mode.
Table 75. e300 Core PLL Configuration
RCWL[COREPLL]
core_clk : csb_clk Ratio
VCO Divider 1
0–1
2–5
6
nn
0000
0
PLL bypassed
(PLL off,
csb_clk clocks
core directly)
PLL bypassed
(PLL off,
csb_clk clocks
core directly)
11
nnnn
nn/a
n/a
00
0001
01:1
2
01
0001
01:1
4
10
0001
01:1
8
Table 74. CSB Frequency Options for Agent Mode (continued)
CFG_CLKIN_DIV
at reset 1
SPMF
csb_clk :
Input Clock
Ratio 2
Input Clock
Frequency (MHz) 2
25
33.33
66.67
csb_clk
Frequency (MHz)
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