FS6370-01 データシートの表示（PDF） - Unspecified
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FS6370-01 Datasheet PDF : 25 Pages
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FS6370-01
EEPROM Programmable 3-PLL Clock Generator IC
Table 9: PLL Tuning Bits
NAME
LFTC_A
(Bit 20)
LFTC_B
(Bit 44)
LFTC_C1
(Bit 68)
LFTC_C2
(Bit 92)
CP_A
(Bit 19)
CP_B
(Bit 43)
CP_C1
(Bit 67)
CP_C2
(Bit 91)
DESCRIPTION
Loop Filter Time Constant A
Bit = 0
Bit = 1
Short Time Constant: 7µs
Long Time Constant: 20µs
Loop Filter Time Constant B
Bit = 0
Short Time Constant: 7µs
Bit = 1
Long Time Constant: 20µs
Loop Filter Time Constant C1
selected when the SEL_CD pin = 0
Bit = 0
Bit = 1
Short Time Constant: 7µs
Long Time Constant: 20µs
Loop Filter Time Constant C2
selected when the SEL_CD pin = 1
Bit = 0
Bit = 1
Short Time Constant: 7µs
Long Time Constant: 20µs
Charge Pump A
Bit = 0
Bit = 1
Current = 2µA
Current = 10µA
Charge Pump B
Bit = 0
Current = 2µA
Bit = 1
Current = 10µA
Charge Pump C1
selected when the SEL_CD pin = 0
Bit = 0
Current = 2µA
Bit = 1
Current = 10µA
Charge Pump C2
selected when the SEL_CD pin = 1
Bit = 0
Bit = 1
Current = 2µA
Current = 10µA
Table 10: Mux Select Bits
NAME
MUX_A[1:0]
(Bits 23-22)
MUX_B[1:0]
(Bits 47-46)
MUX_C1[1:0]
(Bits 71-70)
MUX_C2[1:0]
(Bits 125-124)
MUX_D1[1:0]
(Bits 95-94)
MUX_D2[1:0]
(Bits 127-126)
DESCRIPTION
MUX A frequency select
Bit 23 Bit 22
0
0
Reference Frequency
0
1
PLL A Frequency
1
0
PLL B Frequency
1
1
PLL C Frequency
MUX B frequency select
Bit 47 Bit 46
0
0
Reference Frequency
0
1
PLL A Frequency
1
0
PLL B Frequency
1
1
PLL C Frequency
MUX C1 frequency select
selected when the SEL_CD pin = 0
Bit 71 Bit 70
0
0
Reference Frequency
0
1
PLL A Frequency
1
0
PLL B Frequency
1
1
PLL C Frequency
MUX C2 frequency select
selected when the SEL_CD pin = 1
Bit 125 Bit 124
0
0
Reference Frequency
0
1
PLL A Frequency
1
0
PLL B Frequency
1
1
PLL C Frequency
MUX D1 frequency select
selected when the SEL_CD pin = 0
Bit 95 Bit 94
0
0
Reference Frequency
0
1
PLL A Frequency
1
0
PLL B Frequency
1
1
PLL C Frequency
MUX D2 frequency select
selected when the SEL_CD pin = 1
Bit 127 Bit 126
0
0
Reference Frequency
0
1
PLL A Frequency
1
0
PLL B Frequency
1
1
PLL C Frequency
12
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