Complete Single-Conversion

Television Tuner

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11

BIT NAME

BIT LOCATION (0 = LSB)

RECOMMENDED

DEFAULT

FUNCTION

N[7:0]

7–0

10101011

Sets the least significant bits of the PLL integer divider (N). Default

integer divider value is N = 4688. N can range from 256 to 32,767.

Table 3. N-DIV Low Register (Address: 0001b)

BIT NAME

BIT LOCATION (0 = LSB)

RECOMMENDED

DEFAULT

FUNCTION

RESERVED

7

0

Must be set to 0.

R[6:0]

6–0

0010000

Sets the PLL reference divider (R). Default reference divider value is

R = 64. R can range from 16 to 127.

Table 4. R-DIV Register (Address: 0010b)

BIT NAME

BIT LOCATION (0 = LSB)

RECOMMENDED

DEFAULT

FUNCTION

VCO[4:3]

7–6

10

VCO select. Selects one of three possible VCOs.

00 = VCOs shut down

01 = Selects VCO1

10 = Selects VCO2

11 = Selects VCO3

VCO[2:0]

5–3

111

VCO sub-band select. Selects one of eight possible VCO sub-bands.

000 = Selects SB0

001 = Selects SB1

010 = Selects SB2

011 = Selects SB3

100 = Selects SB4

101 = Selects SB5

110 = Selects SB6

111 = Selects SB7

LD

2

1

Lock detect enable.

0 = Disabled

1 = Enabled

VDIV[1:0]

1–0

10

VCO divider ratio select.

00 = Sets VCO divider to 4

01 = Sets VCO divider to 8

10 = Sets VCO divider to 16

11 = Sets VCO divider to 32

Table 5. VCO Register (Address: 0011b)