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| 型号： | IMISC670DYB |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 文件页数： | 10/12页 |
| 文件大小： | 505K |
| 代理商： | IMISC670DYB |
SC670
I
2C Clock Generator for Pentium Notebook Designs.
Approved Product
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.
Rev.1.4
6/20/97
MILPITAS, CA 95035. TEL: 408-263-6300. FAX 408-263-6571
Page 7 of 12
SERIAL CONTROL REGISTERS(Continued)
Byte 6: Reserved Register
Bit
@Pup
Pin#
Description
7x
-
Reserved
6x
-
Reserved
5x
-
Reserved
4x
-
Reserved
3x
-
Reserved
2x
-
Reserved
1x
-
Reserved
0x
-
Reserved
Byte 7: Frequency Control
If the three LSBs of this register are 111 (as at power up), the frequency is controlled by the SEL package
pin. Note that if this pin is open, the internal pull-up will select 66 MHz. Otherwise, the CPU clock frequency
is controlled by F_SEL(0:2).
Bit
@Pup
Description
7x
Reserved
6x
Reserved
5x
Reserved
4x
Reserved
3x
Reserved
2
1
F_SEL2
1
F_SEL1
0
1
F_SEL0
FSEL2
FSEL1
FSEL0
FREQUENCY
000
Reserved
001
Reserved
010
Reserved
011
33 MHz
100
50 MHz
101
55 MHz
110
60 MHz
1
From SEL pin
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