SI5338 SILABS [Silicon Laboratories], SI5338 Datasheet - Page 70

• Manufacturer Part Number: SI5338
• Description: I2C-PROGRAMMABLE ANY-FREQUENCY, ANY-OUTPUT QUAD CLOCK GENERATOR
• Manufacturer: SILABS [Silicon Laboratories]

Si5338
Reset value = xxxx xxxx
Reset value = xxxx xxxx
70
Register 49.
Register 48.
Name FCAL_OVRD_EN
Name
Type
Type
Bit
Bit
6:0
6:4
3:2
1:0
Bit
Bit
7
7
PFD_EXTFB
FCAL_OVRD_EN
PLL_KPHI[6:0] Sets the charge pump current for the PFD. Clockbuilder Desktop sets these values
VCO_GAIN[2:0]
PFD_EXTFB
BWSEL[1:0]
R/W
RSEL[1:0]
D7
R/W
Name
D7
Name
Selects PFD feedback input from internal (see Register 30[7:5]) or external source.
0: Internal feedback path
1: External feedback path (zero delay mode)
automatically. See AN411 for manual setting.
D6
FCAL Override Enable.
0: Do not use FCAL value in registers 45,46,47
1: Use FCAL value in registers 45,46,47
Sets the VCO Gain.
Clockbuilder Desktop sets these values automatically. See AN411 for manual set-
ting.
Loop Filter Resistor Select.
Clockbuilder Desktop sets these values automatically. See AN411 for manual set-
ting.
Select the PLL Loopfilter.
Clockbuilder Desktop sets these values automatically. See AN411 for manual set-
ting.
D6
VCO_GAIN[2:0]
D5
R/W
D5
Rev. 0.6
D4
D4
PLL_KPHI[6:0]
Function
R/W
Function
D3
D3
RSEL[1:0]
R/W
D2
D2
D1
D1
BWSEL[1:0]
R/W
D0
D0