TDA5150 Datasheet, PDF (83/106 Pages) Infineon Technologies AG – On-chip, high resolution fractional-N synthesizer and Sigma-Delta modulator with ASK, FSK, GFSK options

TDA 5150
ADDR 0x1E
TDA 5150 Functional Description
GFXOSC—Gaussian Filter Configuration
Bit 7
FHBLANK
w/0
Bit 6
reserved
w/1
Bit 5
reserved
w/1
Bit 4
reserved
w/1
Bit 3
GFBYP
w/1
Bit 2
GFDIV
w/0
Bit 1
GFDIV
w/0
Bit 0
GFDIV
w/0
Bit 7 FHBLANK
Bit <6:4> reserved
Bit 3 GFBYP
Bit <2:0> GFDIV
Frequency Hopping VAC Disable
Reserved, set all bits to 1
Gaussian filter bypass
Gaussian filter divider bits <10:8>
FHBLANK
GFBYP
GFDIV
Frequency Hopping, enable/disable VCO Auto Calibration for Channel Hopping
0: enable VCO Auto Calibration
(default)
1: Skip VCO Auto Calibration for
frequency hops <1MHz
Gaussian filter bypass: 0: GF enabled
1: GF bypassed
Gaussian filter clock divider value (11 bits, bits < 10:8 >), defines the
sampling ratio of the Gaussian filter, typically this value is set such
that the GF divider is 16 x chiprate
(for ideal Gaussian filtering)
GFDIV = -----------^f--^X---^O----^S--^C------------ – 1
chiprate × 16
Data Sheet
83
V 1.0, July 2009