SM1124 Series

NIPPON PRECISION CIRCUITS—9

Tempo

There are 29 tempos that can be selected for each

tune. The tempo varies with the external reference

frequency.

Tempo table

Quarter note ( ) length = 1536

× tempo counter frequency divider ÷ CLK frequency

(Ex) Tempo code = 1F (divider = 32), CLK frequency = 32.768 kHz

1536

× 32 ÷ 32768 = 1.5 (seconds)

R O M

32.768 kHz system

37.5 kHz system

38.4 kHz system

48 kHz system

Code

Frequenc y

divider

Temp

=

Temp

=

Temp

=

Temp

=

03

4

Prestissimo

320.0

Prestissimo

366.2

Prestissimo

375.0

Prestissimo

468.8

04

5

256.0

293.0

300.0

375.0

05

6

213.3

244.1

250.0

312.5

06

7

Presto

182.9

209.3

214.3

267.9

07

8

Allegro

160.0

Presto

183.1

Presto

187.5

234.4

08

9

142.2

Allegro

162.8

Allegro

166.7

208.3

09

10

128.0

146.5

150.0

Presto

187.5

0A

11

Moderato

116.4

133.2

136.4

170.5

0B

12

106.7

122.1

125.0

Allegro

156.3

0C

13

Andante

98.5

Moderato

112.7

Moderato

115.4

144.2

0D

14

91.4

Andante

104.6

107.1

133.9

0E

15

85.3

97.7

Andante

100.0

125.0

0F

16

80.0

91.6

93.8

Moderato

117.2

10

17

Adagio

75.3

86.2

88.2

110.3

11

18

71.1

81.4

83.3

Andante

104.2

12

19

67.4

77.1

78.9

98.7

13

20

Larghetto

64.0

Adagio

73.2

Adagio

75.0

93.8

14

21

61.0

69.8

71.4

89.3

15

22

Largo

58.2

66.6

68.2

85.2

16

23

55.7

Larghetto

63.7

Larghetto

65.2

81.5

17

24

53.3

61.0

62.5

78.1

18

25

51.2

Largo

58.6

60.0

Adagio

75.0

19

26

49.2

56.3

Largo

57.7

72.1

1A

27

47.4

54.3

55.6

69.4

1B

28

45.7

52.3

53.6

67.0

1C

29

44.1

50.5

51.7

Larghetto

64.7

1D

30

42.7

48.8

50.0

62.5

1E

31

41.3

47.3

48.4

60.5

1F

32

40.0

45.8

46.9

Largo

58.6