请教：OM5952芯片的发射信号产生是如何实现的？

802SH-RF BLOCK802SH

CONFIDENTIAL
FL400
37

802SH

FL420
9, 10 7, 8

RXIA/RXIB To IC1400 RXQA/RXQB

[W-CDMA RF]
2, 27, 29 31, 33, 40~45 48

LNA GLNA

Rx_IF AMP fIF_Rx=190MHz

I/QDEM /2 0 1/4 GAIN TOL. KILLER

Rx LPF LPF TUNE

Rx AGC AMP VGA CTRL VDD_B

FL002 DUPLEXER

1stLO fL1: 2302.6~2357.4MHz

RF VCO

2ndLO fL2: 760MHz

VCO TUNE GLNA RXON PLLCTRL

Rx SERIAL IF 3WIRE SERIAL BUS
18 24 20

From IC1400

TRANSMITTER fTx: 1922.6~1977.4MHz RECEIVER fRx: 2112.6~2167.4MHz
10

36 29

32 25

45 56 37 46

IC400 OM5954ET RECEIVER IC FOR W-CDMA

RF PLL XO
19 23

MCLK CRYSTAL 13MHz XOOB XOOC 13MHz X770 DAC3 D770

21

48 49

4, 3

BUILT-IN AERIAL

FL650

ISOLATOR
3, 6, 9, 11~14, 17 20, 22, 23

CPL

PA FL500 I/QMOD IF BPF VGA CTRL fIF_Tx=380MHz TXIFVGA IF VCO 1520MHz 1/2 /2 0
1, 2

TXI/TXIBAR TXQ/TXQBAR

From IC1400