DRP3510 datasheet(17/30 Pages) ETC

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ADVANCE INFORMATION

DRX 3960A

Micronas

10 10

Reference divider setting

The DRX 3960A is able to operate with different reference frequencies. The

reference divider has to be set to the value which divides the reference fre-

quency to 100 kHz.

To prevent malfunction after POR, the default value is set for fref = 27 MHz, if

the pin REF_SW is connected to VDVDD or set for fref = 20.25 MHz, if the pin

REF_SW is connected to GND.

bit[8:0]

External_Ref_Freq / 100 kHz

27 MHz

10Dhex

20.25 MHz

CAhex

4MHz

28hex

SYN_REF

10 12

Tuner Take Over Point (TOP) setting

Defines the gain of the internal preamplifier to set the TOP

bit[3:0]

Gain of Preamplifier

00 dB

11.33 dB

22.67 dB

...

810 dB (default)

...

18.67 dB

20 dB

TOP_SET

10 70

Equalizer coefficient 0

bit[9:1]

Coefficient

bit[0]

Update bit

do not update coefficients

update coefficients

EQU_0

10 71

Equalizer coefficient 1

bit[8:0]

Coefficient

EQU_1

10 72

Equalizer coefficient 2

bit[8:0]

Coefficient

EQU_2

10 73

Equalizer coefficient 3

bit[8:0]

Coefficient

EQU_3

Table 4–8: Write Register on I2C Subaddress 10hex

I2C-Sub-

address

(hex)

Function

Name

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