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HD151TS206SS датащи(PDF) 15 Page - Renesas Technology Corp

номер детали HD151TS206SS
подробное описание детали  Mother Board Clock Generator for Intel P4 Chipset (Springdale)
PDF  34 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD151TS206SS датащи(HTML) 15 Page - Renesas Technology Corp

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HD151TS206SS
Rev.1.00, Apr.28.2003, page 15 of 34
I
2C Controlled Register Bit Map (cont.)
Byte17 Control Register
Bit
Description
Contents
Type
Default
Note
7
Reserved
1
R/W
0
6
Reserved
1
R/W
0
5
Reserved
1
R/W
0
4
PLL2 Output (VCO2)
Frequency Control Bit
(M2 / N2 Divider Control Bit)
PLL2 : for CPU
0 = Normal mode
VCO2 frequency is changed on Table 5
selection decided by FS4/3/2/1/0 or
B9[5:1].
1 = Over or Down clocking mode
VCO2 frequency is changed by
B17[3:0] and B18[7:0] with decimal.
B17[3:0] and B18[7:0] are able to be
changed at B17[4] = 1.
R/W
0
3
VCO2 Frequency Control
Bit11
R/W
0
2
VCO2 Frequency Control
Bit10
R/W
1
1
VCO2 Frequency Control
Bit9
R/W
0
0
VCO2 Frequency Control
Bit8
These bits are 100MHz digit of VCO2
frequency.
0000 = 0, 0001 = 1 …. 1001 = 9
R/W
0
See
Note1
Note:
1. B17[3:0] and B18[7:0] must be written together (at writing B18) in every case.
Byte18 Control Register
Bit
Description
Contents
Type
Default
Note
7
VCO2 Frequency Control
Bit7
R/W
0
6
VCO2 Frequency Control
Bit6
R/W
0
5
VCO2 Frequency Control
Bit5
R/W
0
4
VCO2 Frequency Control
Bit4
These bits are 10MHz digit of VCO2
frequency.
0000 = 0, 0001 = 1 …. 1001 = 9
R/W
0
3
VCO2 Frequency Control
Bit3
R/W
0
2
VCO2 Frequency Control
Bit2
R/W
0
1
VCO2 Frequency Control
Bit1
R/W
0
0
VCO2 Frequency Control
Bit0
These bits are 1MHz digit of VCO2
frequency.
0000 = 0, 0001 = 1 …. 1001 = 9
R/W
0
See
Note1
Note:
1. B17[3:0] and B18[7:0] must be written together (at writing B18) in every case.



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