參數(shù)資料
型號： MPC8240LZU250X
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 250 MHz, RISC PROCESSOR, PBGA352
封裝： TBGA-352
文件頁數(shù)： 31/52頁
文件大?。?/td> 542K
代理商： MPC8240LZU250X
MPC8240 (rev0.5) Hardware Specifications
37
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
PLL Configuration
Notes:
1
The processor HID1 values only represent the multiplier of the processor’s PLL (Memory to Processor
Multiplier), thus multiple MPC8240 PLL_CFG[0–4] values may have the same processor HID1 value.
This implies that system software can not read the HID1 register and associate it with a unique
PLL_CFG[0–4] value.
2
PLL_CFG[0–4] settings not listed (00110, 01001, 01011, 01101, 01111, 10001, 10011, 10101, 10111,
11001, and 11011) are reserved.
Table 18. MPC8240 Microprocessor PLL Configuration
Ref
PLL_
CFG
[0–4]2
CPU1
HID1
[0–4]
250 MHz Part8
200 MHz Part8
Ratios3,4
PCI Clock
Input (PCI_
SYNC_IN)
Range
(MHz)
Periph Logic/
Mem
Bus Clock
Range (MHz)
CPU
Clock
Range (MHz)
PCI Clock
Input (PCI_
SYNC_IN)
Range
(MHz)
Periph Logic/
Mem
Bus Clock
Range (MHz)
CPU
Clock
Range (MHz)
PCI to Mem
(Mem VCO)
Multiplier
Mem to CPU
(CPU VCO)
Multiplier
0
00000
00110
25 – 33
75 – 100
188 – 250
25 – 26
75 – 80
188 – 200
3 (6)
2.5 (5)
1
00001
11000
25 – 27
75 – 83
225 – 250
Not Usable
3 (6)
2
00010
00101
50 – 565
50 – 56
100 – 112
50 – 565
50 – 56
100 – 112
1 (4)
2 (8)
3
00011
00101
Bypass
2 (8)
4
00100
00101
25 – 285
50 – 56
100 – 113
25 – 285
50 – 56
100 – 113
2 (8)
5
00101
00110
Bypass
2.5 (5)
7
00111
11000
Bypass
3 (6)
8
01000
11000
336 – 565
33 – 56
100 – 168
336 – 565
33 – 56
100 – 168
1 (4)
3 (6)
A
01010
00111
25 – 27
50 – 55
225 – 250
Not Usable
2 (4)
4.5 (9)
C
01100
00110
25 – 50
50 – 100
125 – 250
25 – 40
50 – 80
125 – 200
2 (4)
2.5 (5)
E
01110
11000
25 – 41
50 – 83
150 – 250
25 – 33
50 – 66
150 – 200
2 (4)
3 (6)
10
10000
00100
25 – 33
75 – 100
150 – 200
25 – 33
75 – 100
150 – 200
3 (6)
2 (4)
12
10010
00100
33 – 66
50 – 100
100 – 200
337– 66
50 – 100
100 – 200
1.5 (3)
2 (4)
14
10100
11110
25 – 35
50 – 71
175 – 250
25 – 28
50 – 56
175 – 200
2 (4)
3.5 (7)
16
10110
11010
25 – 31
50 – 62
200 – 250
25
50
200
2 (4)
4 (8)
18
11000
25 – 33
62 – 83
186 – 250
25 – 26
62 – 65
186 – 200
2.5 (5)
3 (6)
1A
11010
507 – 62
50 – 62
200 – 250
50
200
1 (2)
4 (8)
1C
11100
11000
337 – 55
50 – 83
150 – 250
337 – 44
50 – 66
150 – 200
1.5 (3)
3 (6)
1D
11101
00110
337 – 66
50 – 100
125 – 250
337 – 53
50 – 80
125 – 200
1.5 (3)
2.5 (5)
1E
11110
01111
Not Usable
Off
1F
11111
Not Usable
Off
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