MAX3542CLM(2010) データシートの表示（PDF） - Maxim Integrated
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MAX3542CLM Datasheet PDF : 20 Pages
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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[1:0]
1–0
Selects the tracking filter band of operation.
00 = VHF_LO
00
01 = VHF_HI
10 = UHF
11 = Factory use only
Table 7. Control Register (Address: 0101b)
BIT NAME
BIT LOCATION (0 = LSB)
RECOMMENDED
DEFAULT
FUNCTION
RESERVED
7–4
SHDN_RF
3
SHDN_IFVGA
2
INPT[1:0]
1–0
0000
0
0
01
Must be set to 0000.
RF shutdown.
0 = RF circuitry enabled
1 = RF circuitry disabled
IF VGA shutdown.
0 = IF VGA enabled
1 = IF VGA disabled
Selects the RF input.
00 = Selects VHF_IN, LPF enabled
01 = Selects VHF_IN, LPF disabled
10 = Selects UHF_IN
11 = Factory use only
Table 8. Shutdown Register (Address: 0110b)
BIT NAME
BIT LOCATION (0 = LSB)
RECOMMENDED
DEFAULT
FUNCTION
SHDN_MIX
7–6
[1:0]
Mixer shutdown.
00
00 = Mixer enabled
01,10 = Factory use only
11 = Mixer disabled
SHDN_IF
5
SHDN_OD
4
SHDN_SYN
3
IF shutdown.
0
0 = IF section enabled
1 = IF section disabled
IFOVLD shutdown.
0
0 = Power detector enabled
1 = Power detector disabled
Frequency synthesizer shutdown.
0
0 = Synthesizer enabled
1 = Synthesizer disabled
RESERVED
2–0
000
Must be set to 000.
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