參數(shù)資料
型號(hào)： LMX3162VBH
廠(chǎng)商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 通信及網(wǎng)絡(luò)
英文描述： Single Chip Radio Transceiver
中文描述： SPECIALTY TELECOM CIRCUIT, PQFP48
封裝： 7 X 7 MM, PLASTIC, QFP-48
文件頁(yè)數(shù)： 15/18頁(yè)
文件大小： 399K
代理商： LMX3162VBH
Function Register Programming Description (F-Latch)
(Continued)
Mode
Control
Bit
F1
F2
Mode Control Description
Setting to
“0” to Select
Setting to
“1” to Select
Prescaler modules select.
Phase detector polarity.
It is used to reverse the polarity of
the phase detector according to the VCO characteristics.
Charge pump current gain select.
32/33
64/65
Negative VCO
Characteristics
LOW Charge Pump
Current (1X I
cpo
).
Normal Operation
—
Power Up RX Chain
Positive VCO
Characteristics
HIGH Charge Pump
Current (4X I
cpo
).
Force to TRI-STATE
—
Power Down RX Chain
F3
F4
F5
F6
TRI-STATE charge pump output.
Reserved.
Setting to “0” always.
Receive chain power down control.
Software power down
can only be activated when both F11 and F12 are set to “0”.
Transmit chain power down control.
Software power down
can only be activated when both F11 and F12 are set to “0”.
Out 0 CMOS output.
Out 1 CMOS output.
Functions only in software power down
mode, when both F11 and F12 are set to “0”.
Out 2 CMOS output.
Functions only in software power down
mode, when both F11 and F12 are set to “0”.
Power down mode select.
Set both F11 and F12 to “0” for software power down mode.
Set both F11 and F12 to “1” for hardwire power down mode.
Other combinations are reserved for test mode.
Demodulator gain select
Demodulator DC level shift +/ level shifting polarity
Demodulator DC level shift of 1.000V
F7
Power Up TX Chain
Power Down TX Chain
F8
F9
OUT 0 = LOW
OUT 1 = LOW
OUT 0 = HIGH
OUT 1 = HIGH
F10
OUT 2 = LOW
OUT 2 = HIGH
F11
F12
Software
Power Down
Hardware
Power Down
F13
F14
F15
1X Gain Mode
Set Negative Polarity
No Shift
3X Gain Mode
Set Positive Polarity
Shift the DC Level
by 1.000V
Shift the DC Level
by 0.500V
Shift the DC Level
by 0.250V
Shift the DC Level
by 0.125V
F16
Demodulator DC level shift of 0.500V
No Shift
F17
Demodulator DC level shift of 0.250V
No Shift
F18
Demodulator DC level shift of 0.125V
No Shift
Power Down Mode/Control Table
Software Power Down Mode (F11=F12=0)
Pin/Bit
Setting to “0”
means
F6
Receiver ON
F7
Transmitter ON
PLL PD
PLL ON
CE
LMX3162 OFF
Hardwire Power Down Mode (F11=F12=1)
Pin/Bit
Setting to “0”
means
Rx PD
Receiver OFF
Tx PD
Transmitter OFF
PLL PD
PLL ON
CE
LMX3162 OFF
Setting to “1”
means
Receiver OFF
Transmitter OFF
PLL OFF
LMX3162 ON
Setting to “1”
means
Receiver ON
Transmitter ON
PLL OFF
LMX3162 ON
L
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