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CX20470 Datasheet(数据表) 6 Page - Skyworks Solutions Inc.

部件型号  CX20470
说明  CDMA Baseband Analog Processor
下载  18 Pages
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制造商  SKYWORKS [Skyworks Solutions Inc.]
网页  http://www.skyworksinc.com
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CX20470 Datasheet(HTML) 6 Page - Skyworks Solutions Inc.

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CX20470
CDMA BAP
6
Skyworks – Preliminary
101106A
Proprietary Information and Specifications are Subject to Change
August 24, 2000
Digital
Synthesis
Digital
Synthesis
CHIPX8 Int
TCXO/4
Anti-Alias Filter
RXQD[3:0]
RX_Q
Anti-Alias Filter
RXID[3:0]
RX_I
4
4
RXQFMDATA
RXIFMDATA
FMCLK
RXFMSTB
( TXD[7:0] )
TX_I
TX_Q
19.2 MHz
19.68 MHz
19.8 MHz
÷ N3
÷ N2
Phase
Detector
Phase
Detector
÷ R3
÷ R2
&
LOCK
RXPLL_IN
RXPD_OUT
TXPLL_IN
TXPD_OUT
SLEEP/
Mode
Control
IDLE/
FM/
ADCDATA
ADCCLK
ADCENA
Analog
Mux
( ADCIN[6:0] )
7
PLL &
Analog Mux
Control
SYN_ENABLE
SYN_DATA
SYN_CLK
Anti-Alias Filter
Anti-Alias Filter
FM Filter
SYN_PRESET
TXCLK/
(4.9 MHz/120 KHz)
TX_Q/
TX_I/
RX_I/
RX_Q/
TCXO
Low Pass Filter
Low Pass FIlter
Low Pass Filter
Transmit Filter
8 Bit
DAC
ADC
ADC
ADC
CDMA Filter
8
CODEC
MCLK/SYNC
SPKR1O
8 Bit
ADC
DC cancellation
2
2
2
FM_Mod
2
2
2
I Offset
Q Offset
2
ADCSEL[2:0]
3
LINEO
MIC2IN
LINEIN
2
2
2
2
SOUT
SIN
SDA
SCL
ADC
FM Filter
Transmit Filter
8 Bit
DAC
P/S
P/S
8
8
40 KHz
40 KHz
360 KHz
360 KHz
360 KHz
40 KHz
PLL
2:1
CDMA Filter
CDMA/FM Mode
2
PDBTCXO
SEL_SI
CS_AD
Mux
Mux
( TXIIN )
( TXIIN/ )
( TXQIN )
( TXQIN/ )
( CHIPX8_EXT )
CHipx8 Select
( SPKR2O )
( MIC1IN )
CHIPX8
IREF
( IREF )
( RINGER )
Key: Signals in the ( ) represent multiplexed I/O pins
( TEST/ )
Figure 4. CX20470 System Block Diagram (100-Pin
µµµµBGA Package)




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