W83194BR-C

PRELIMINARY

Publication Release Date: Dec. 1999

- 6 -

Revision 0.40

The Pin column lists the affected pin number and the @PowerUp column gives the state at true

power up. Registers are set to the values shown only on true power up. "Command Code" byte and

"Byte Count" byte must be sent following the acknowledge of the Address Byte. Although the data

(bits) in these two bytes are considered "don't care", they must be sent and will be acknowledge.

After that, the below described sequence (Register 0, Register 1, Register 2, ....) will be valid and

acknowledged.

Frequency Selection BY I2C

SSEL5

SSEL4

SSEL3

SSEL2

SSEL1

SSEL0

CPU

(MHz)

CPU/2

3V66

(MHz)

PCI

(MHz)

IOAPIC

(MHz)

0

0

0

0

0

0

133.90

66.95

66.95

33.48

16.74

0

0

0

0

0

1

128.50

64.25

64.25

32.13

16.06

0

0

0

0

1

0

124.00

62.00

82.67

41.34

20.67

0

0

0

0

1

1

66.80

33.40

66.80

33.40

16.70

0

0

0

1

0

0

120.00

60.00

80.00

40.00

20.00

0

0

0

1

0

1

114.00

57.00

76.00

38.00

19.00

0

0

0

1

1

0

105.00

52.50

70.00

35.00

17.50

0

0

0

1

1

1

100.20

50.10

66.80

33.40

16.70

0

0

1

0

0

0

160.00

80.00

80.00

40.00

20.00

0

0

1

0

0

1

155.00

77.50

77.50

38.75

19.38

0

0

1

0

1

0

152.50

76.25

76.25

38.13

19.06

0

0

1

0

1

1

150.00

75.00

75.00

37.50

18.75

0

0

1

1

0

0

148.00

74.00

74.00

37.00

18.50

0

0

1

1

0

1

143.00

71.50

71.50

35.75

17.88

0

0

1

1

1

0

138.00

69.00

69.00

34.50

17.25

0

0

1

1

1

1

133.30

66.65

66.65

33.33

16.66

0

1

0

0

0

0

100.90

50.45

50.45

25.23

12.61

0

1

0

0

0

1

109.00

54.50

72.67

36.34

18.17

0

1

0

0

1

0

116.00

58.00

77.34

38.67

19.33

0

1

0

0

1

1

122.00

61.00

61.00

30.50

15.25

0

1

0

1

0

0

126.00

63.00

63.00

31.50

15.75

0

1

0

1

0

1

130.00

65.00

65.00

32.50

16.25

0

1

0

1

1

0

135.00

67.50

67.50

33.75

16.88

0

1

0

1

1

1

140.00

70.00

70.00

35.00

17.50

0

1

1

0

0

0

145.00

72.50

72.50

36.25

18.13

0

1

1

0

0

1

159.00

79.50

79.50

39.75

19.88

0

1

1

0

1

0

162.00

81.00

81.00

40.50

20.25

0

1

1

0

1

1

165.00

82.50

82.50

41.25

20.63

0

1

1

1

0

0

168.00

84.00

84.00

42.00

21.00

0

1

1

1

0

1

171.00

85.50

85.50

42.75

21.38

0

1

1

1

1

0

174.00

87.00

87.00

43.50

21.75

0

1

1

1

1

1

180.00

90.00

90.00

45.00

22.50