FS6377 datasheet(13/24 Pages) ONSEMI

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FS6377

Table 8: PLL Tuning Bits

Name

Description

Loop Filter Time Constant A

LFTC_A

(Bit 20)

Bit = 0

Bit = 1

Short time constant: 7µs

Long time constant: 20µs

Loop Filter Time Constant B

selected when the SEL_CD pin = 0

LFTC_B

(Bit 44)

Bit = 0

Bit = 1

Short time constant: 7µs

Long time constant: 20µs

Loop Filter Time Constant C1

selected when the SEL_CD pin = 1

LFTC_C1

(Bit 68)

Bit = 0

Bit = 1

Short time constant: 7µs

Long time constant: 20µs

Loop Filter Time Constant C2

LFTC_C2

(Bit 92)

Bit = 0

Bit = 1

Short time constant: 7µs

Long time constant: 20µs

Charge Pump A

CP_A

(Bit 19)

Bit = 0

Bit = 1

Current = 2µA

Current = 10µA

Charge Pump B

CP_B

(Bit 43)

Bit = 0

Bit = 1

Current = 2µA

Current = 10µA

Charge Pump C1

selected when the SEL_CD pin = 0

CP_C1

(Bit 67)

Bit = 0

Bit = 1

Current = 2µA

Current = 10µA

Charge Pump C2

selected when the SEL_CD pin = 1

CP_C2

(Bit 91)

Bit = 0

Bit = 1

Current = 2µA

Current = 10µA

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