MAX3541 데이터 시트보기 (PDF) - Maxim Integrated

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MAX3541

Complete Single-Conversion Television Tuner

Maxim Integrated 

Complete Single-Conversion

Television Tuner

Table 6. IFOVLD, Charge Pump, and Filter Select Register (Address: 0100b)

BIT NAME

BIT LOCATION (0 = LSB)

RECOMMENDED

DEFAULT

FUNCTION

RESERVED

7

0

Must be set to 0.

IFOVLD[2:0]

6-4

000

Write content of ROM register OD[2:0] to this location.

CP[1:0]

3-2

Selects the typical charge-pump current.

00 = 0.5mA

00

01 = 1mA

10 = 1.5mA

11 = 2mA

TF

1

Selects the tracking filter band of operation.

0

0 = VHF

1 = UHF

RESERVED

0

0

Must be set to 0.

Table 7. Control Register (Address: 0101b)

BIT NAME BIT LOCATION (0 = LSB) RECOMMENDED

DEFAULT

FUNCTION

RESERVED

7-4

0000

Must be set to 0000.

SHDN_RF

3

RF shutdown.

0

0 = RF circuitry enabled

1 = RF circuitry disabled

SHDN_IFVGA

2

IF VGA shutdown.

0

0 = IF VGA enabled

1 = IF VGA disabled

INPT[1:0]

1-0

Selects the RF input.

00 = Selects VHF_IN, LPF enabled

01

01 = Selects VHF_IN, LPF disabled

10 = Selects UHF_IN

11 = Factory use only

Table 8. Shutdown Register (Address: 0110b)

BIT NAME

SHDN_MIX

SHDN_IF

SHDN_OD

SHDN_SYN

RESERVED

BIT LOCATION (0 = LSB)

RECOMMENDED

DEFAULT

FUNCTION

Mixer shutdown.

7-6

00

00 = Mixer enabled

01,10 = Factory use only

11 = Mixer disabled

IF shutdown.

5

0

0 = IF section enabled

1 = IF section disabled

IFOVLD shutdown.

4

0

0 = Power detector enabled

1 = Power detector disabled

Frequency synthesizer shutdown.

3

0

0 = Synthesizer enabled

1 = Synthesizer disabled

2-0

000

Must be set to 000.

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