PLL Integer Divide Helper Data Table

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

Document ID
UG1085
Release Date
2023-12-21
Revision
2.4 English

For each unique value multiplier value, program the PLLs using registers in the CRL_APB and CRF_APB register sets (LPD and FPD). Each of the five PLLs have a set of integer programming parameters:

°{CRL, CRF}_APB.xPLL_CFG[CP]

°{CRL, CRF}_APB.xPLL_CFG[RES]

°{CRL, CRF}_APB.xPLL_CFG[LFHF]

°{CRL, CRF}_APB.xPLL_CFG[LOCK_DLY]

°{CRL, CRF}_APB.xPLL_CFG[LOCK_CNT]

Table: PLL Integer Feedback Divider Helper Data Values provides the PLL configuration register programming values when the PLL is in integer mode. The frequency of the VCO must stay within the range specified in Zynq UltraScale+ MPSoC Data Sheet: DC and AC Switching Characteristics (DS925) [Ref 2].

Table 37-1:      PLL Integer Feedback Divider Helper Data Values

FBDIV

CP

RES

LFHF

LOCK_DLY

LOCK_CNT

25

3

10

3

63

1000

26

3

10

3

63

1000

27

4

6

3

63

1000

28

4

6

3

63

1000

29

4

6

3

63

1000

30

4

6

3

63

1000

31

6

1

3

63

1000

32

6

1

3

63

1000

33

4

10

3

63

1000

34

5

6

3

63

1000

35

5

6

3

63

1000

36

5

6

3

63

1000

37

5

6

3

63

1000

38

5

6

3

63

975

39

3

12

3

63

950

40

3

12

3

63

925

41

3

12

3

63

900

42

3

12

3

63

875

43

3

12

3

63

850

44

3

12

3

63

850

45

3

12

3

63

825

46

3

12

3

63

800

47

3

12

3

63

775

48

3

12

3

63

775

49

3

12

3

63

750

50

3

12

3

63

750

51

3

2

3

63

725

52

3

2

3

63

700

53

3

2

3

63

700

54

3

2

3

63

675

55

3

2

3

63

675

56

3

2

3

63

650

57

3

2

3

63

650

58

3

2

3

63

625

59

3

2

3

63

625

60

3

2

3

63

625

61 to 82

3

2

3

63

600

83 to 102

4

2

3

63

600

103

5

2

3

63

600

104

5

2

3

63

600

105

5

2

3

63

600

106

5

2

3

63

600

107 to 125

3

4

3

63

600

The following table summarizes the PLL programming values when the PLL is in fractional mode.

Table 37-2:      PLL Programming Data for Fractional Feedback Divider Values

FBDIV

CP

RES

LFHF

LOCK_DLY

LOCK_CNT

25

3

5

3

63

1000

26

3

5

3

63

1000

27

3

9

3

63

1000

28

3

9

3

63

1000

29

3

9

3

63

1000

30

3

9

3

63

1000

31

3

14

3

63

1000

32

3

14

3

63

1000

33

3

14

3

63

1000

34

3

14

3

63

1000

35

3

14

3

63

1000

36

3

14

3

63

1000

37

3

14

3

63

1000

38

3

14

3

63

975

39

3

14

3

63

950

40

3

14

3

63

925

41

3

1

3

63

900

42

3

1

3

63

875

43

3

1

3

63

850

44

3

1

3

63

850

45

3

1

3

63

825

46

3

1

3

63

800

47

3

1

3

63

775

48

3

6

3

63

775

49

3

6

3

63

750

50

3

6

3

63

750

51

3

6

3

63

725

52

3

6

3

63

700

53

3

6

3

63

700

54

3

6

3

63

675

55

3

6

3

63

675

56

3

6

3

63

650

57

3

6

3

63

650

58

3

6

3

63

625

59

3

6

3

63

625

60

3

6

3

63

625

61

3

6

3

63

600

62

3

6

3

63

600

63

3

6

3

63

600

64

3

6

3

63

600

65

3

6

3

63

600

66

3

10

3

63

600

67

3

10

3

63

600

68

3

10

3

63

600

69

3

10

3

63

600

70

3

10

3

63

600

71

3

10

3

63

600

72

3

10

3

63

600

73

3

10

3

63

600

74

3

10

3

63

600

75

3

10

3

63

600

76

3

10

3

63

600

77

3

10

3

63

600

78

3

10

3

63

600

79

3

10

3

63

600

80

3

10

3

63

600

81

3

10

3

63

600

82

3

6

3

63

600

83

3

6

3

63

600

84

3

6

3

63

600

85

3

6

3

63

600

86

3

6

3

63

600

87

3

6

3

63

600

88

3

12

3

63

600

89

3

12

3

63

600

90

3

12

3

63

600

91

3

12

3

63

600

92

3

12

3

63

600

93

3

12

3

63

600

94

3

12

3

63

600

95

3

12

3

63

600

96

3

12

3

63

600

97

3

12

3

63

600

98

3

12

3

63

600

99

3

12

3

63

600

100

3

12

3

63

600

101

3

12

3

63

600

102

3

12

3

63

600

103

3

12

3

63

600

104

3

12

3

63

600

105

3

12

3

63

600

106

3

12

3

63

600

107

3

12

3

63

600

108

3

12

3

63

600

109

3

12

3

63

600

110

3

12

3

63

600

111

3

12

3

63

600

112

3

12

3

63

600

113

3

12

3

63

600

114

3

12

3

63

600

115

3

12

3

63

600

116

3

12

3

63

600

117

3

12

3

63

600

118

3

12

3

63

600

119

3

12

3

63

600

120

3

12

3

63

600

121

3

12

3

63

600

122

3

12

3

63

600

123

3

12

3

63

600

124

3

12

3

63

600

125

3

12

3

63

600