參數(shù)資料
型號: MAX2112
廠商: Maxim Integrated Products, Inc.
英文描述: Complete, Direct-Conversion Tuner for DVB-S2 Applications
中文描述: 完備的直接變頻調(diào)諧器,用于DVB-S2系統(tǒng)
文件頁數(shù): 13/19頁
文件大?。?/td> 313K
代理商: MAX2112
M
Complete, Direct-Conversion
Tuner for DVB-S2 Applications
______________________________________________________________________________________
13
Table 13. Test Register
BIT NAME
BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
CPTST[2:0]
7–5
000
Charge-pump test modes.
000 = Normal operation (default).
X
4
X
Don’t care.
TURBO
3
0
Charge-pump fast lock.
Users must program to 1 after powering up the device.
LDMUX[2:0]
2–0
000
REFOUT output.
000 = Normal operation. Other values are not tested.
Table 14. Status Byte-1 Register
BIT NAME
BIT LOCATION (0 = LSB)
FUNCTION
POR
7
Power-on reset status.
0 = Chip status register has been read with a stop condition since last power-on.
1 = Power-on reset (power cycle) has occurred. Default values have been loaded in
registers.
VASA
6
Indicates whether VCO autoselection was successful.
0 = Indicates the autoselect function is disabled or unsuccessful VCO selection.
1 = Indicates successful VCO autoselection.
VASE
5
Status indicator for the autoselect function.
0 = Indicates the autoselect function is active.
1 = Indicates the autoselect process is inactive.
LD
4
PLL lock detector.
0 = Unlocked.
1 = Locked.
Don’t care.
X
3:0
Table 15. Status Byte-2 Register
BIT NAME
VCOSBR[4:0]
BIT LOCATION (0 = LSB)
7-3
FUNCTION
VCO band readback.
VAS ADC output readback.
000 = Out of lock.
001 = Locked.
010 = VAS locked.
101 = VAS locked.
110 = Locked.
111 = Out of lock.
ADC[2:0]
2-0
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