W209C datasheet(9/16 Pages) CYPRESS

Part #	W209C

Description	Frequency Generator for Integrated Core Logic with 133-MHz FSB

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Manufacturer	CYPRESS [Cypress Semiconductor]

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W209C

PRELIMINARY

Document #: 38-07171 Rev. *A

Page 9 of 16

Table 4. Additional Frequency Selections through Serial Data Interface Data Bytes

Input Conditions

Output Frequency

Data Byte 4, Bit 3 = 1

CPU

SDRAM

3V66

PCI

APIC

Spread

Spectrum

Bit 2

SEL_4

Bit 7

SEL_3

Bit 6

SEL_2

Bit 5

SEL_1

Bit 4

SEL_0

0

75.3

113.0

75.3

37.6

18.8

OFF

0

1

95.0

63.3

31.6

15.8

–0.6%

0

1

0

129.0

86.0

43.0

21.5

OFF

0

1

150.0

113.0

75.3

37.6

18.8

OFF

0

1

0

150.0

100.0

50.0

25.0

OFF

0

1

0

1

110.0

73.0

36.6

18.3

OFF

0

1

0

140.0

93.3

46.7

23.3

OFF

0

1

144.0

108.0

72.0

36.0

18.0

OFF

0

1

0

68.3

102.5

68.3

34.1

17.0

OFF

0

1

0

1

105.0

70.0

35.0

17.5

OFF

0

1

0

1

0

138.0

92.0

46.0

23.0

OFF

0

1

0

1

140.0

105.0

70.0

35.0

17.5

OFF

0

1

0

66.8

100.2

66.8

33.4

16.7

±0.45%

0

1

0

1

100.2

66.8

33.4

16.7

±0.45%

0

1

0

133.6

89.1

44.4

22.2

±0.45%

0

1

133.6

100.2

66.8

33.4

16.7

±0.45%

1

0

157.3

118.0

78.6

39.3

19.6

OFF

1

0

1

160.0

120.0

80.0

40.0

20.0

OFF

1

0

1

0

146.6

110.0

73.3

36.6

18.3

OFF

1

0

1

122.0

91.5

61.0

30.5

15.2

–0.6%

1

0

1

0

127.0

84.6

42.3

21.1

OFF

1

0

1

0

1

122.0

81.3

40.6

20.3

–0.6%

1

0

1

0

117.0

78.0

39.0

19.5

OFF

1

0

1

114.0

76.0

38.0

19.0

OFF

1

0

80.0

120.0

80.0

40.0

20.0

OFF

1

0

1

78.0

117.0

78.0

39.0

19.5

OFF

1

0

1

0

166.0

55.3

27.6

13.8

OFF

1

0

1

160.0

53.3

26.7

13.3

OFF

1

0

66.6

100.0

66.6

33.3

16.6

–0.6%

1

0

1

100.0

66.6

33.3

16.6

–0.6%

1

0

133.3

88.9

44.4

22.2

–0.6%

1

133.3

100.0

66.6

33.3

16.6

–0.6%

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