MAX3540(2007) 데이터 시트보기 (PDF) - Maxim Integrated
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MAX3540 Datasheet PDF : 16 Pages
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Complete Single-Conversion Television Tuner
Table 8. Shutdown Register (Address: 0110b)
BIT NAME BIT LOCATION (0 = LSB) RECOMMENDED
DEFAULT
FUNCTION
SHDN_MIX
SHDN_IF
SHDN_PD
SHDN_SYN
RESERVED
7, 6
5
4
3
2, 1, 0
Mixer shutdown.
0
00 = mixer enabled
01, 10 = factory use only
11 = mixer disabled
IF shutdown.
0
0 = IF section enabled
1 = IF section disabled
IF OVLD shutdown.
0
0 = power detector enabled
1 = power detector disabled
Frequency synthesizer shutdown.
0
0 = synthesizer enabled
1 = synthesizer disabled
000
Must be set to 000.
Table 9. Tracking-Filter Series Cap Register (Address: 0111b)
BIT NAME
TFS[7:0]
BIT LOCATION (0 = LSB)
7–0
RECOMMENDED
DEFAULT
FUNCTION
00000000*
Programs series capacitor values in the tracking filter.
Table 10. Tracking-Filter Parallel Cap Register (Address: 1000b)
BIT NAME BIT LOCATION (0 = LSB) RECOMMENDED
DEFAULT
FUNCTION
FLD
7
Reserved
6
TFP[5:0]
5–0
0
0
000000*
Filter load bit. A 0 to 1 transition of this bit forces the loading of the
ROM table data readback register.
Must be set to 0.
Programs parallel capacitor values in the tracking filter.
Table 11. Tracking-Filter ROM Address Register (Address: 1001b)
BIT NAME BIT LOCATION (0 = LSB) RECOMMENDED
DEFAULT
FUNCTION
Reserved
7–4
0000
Must be set to 0000.
TFA[3:0]
3–0
0000*
Address bits of the ROM register to be read.
*See the RF Tracking Filter section.
Table 12. Reserved Register (Address: 1010b)
BIT NAME
BIT LOCATION (0 = LSB)
RECOMMENDED
DEFAULT
FUNCTION
Reserved
7–0
N/A
Reserved. Do not program these bits during normal operation.
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