參數(shù)資料
型號: EVB3020A-IFBD
英文描述: GSM Multiband RF Transceiver
中文描述: 手機多頻段射頻收發(fā)器
文件頁數(shù): 22/44頁
文件大小: 409K
代理商: EVB3020A-IFBD
Advance Data Sheet
December 1999
W3020 GSM Multiband RF Transceiver
Lucent Technologies Inc.
29
Programming Information (continued)
CONFIG Register (continued)
Table 38. C3: Receive LO1 Buffer Mode During dc Calibration
C3
Bit 9
Function
0
RX LO1 Buffer Off During dc Offset Calibration
1
RX LO1 Buffer On During dc Offset Calibration
Table 39. C2: LNA Mode During dc Calibration
C2
Bit 8
Function
0
LNA Off During dc Offset Calibration*
1
LNA On During dc Offset Calibration
*Recommended to meet GSM sensitivity requirement.
Table 40. C1: 540 MHz LO2 Phase Detector Polarity
C1
Bit 7
Function
(See Figure 10.)
0
Negative Charge Pump Polarity (VCO2 Frequency Decrease with CP2 Voltage)
1
Positive Charge Pump Polarity (VCO2 Frequency Increase with CP2 Voltage)
LOOP FILTER
REFERENCE
W3020
PLL
540 MHz VCO
VCO OUTPUT
FREQUENCY
C1 STATE = 1
C1 STATE = 0
VCO INPUT CONTROL
VOLTAGE
Figure 10. Programming the LO2 Phase Detector Slope
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