Datasheet

Block diagram ST7538Q
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1 Block diagram
Figure 1. Block diagram
SERIAL
INTERFACE
CARRIER
DETECTION
PLL
CD/PD
RxD
CLR/T
REG/DATA
RxTx
TxD
REGOK
PG
Vdc
PAVcc
ATOP2
ATOP1
ATO
Vsense
CL
RAI
RxFo
TEST2TEST1AVdd AVss BU
XOut WD
TOUT RSTO MCLK ZCout ZCin C_OUT CMINUS CPLUS
XIn
DIGITAL
FILTER
FSK
DEMOD
IF
FILTER
TX
FILTER
FILTER
+
-
FILTER
BU
DAC
ZCOSC
AGC
AMPL
TEST
ALC
OP-AMP
PLI
VREG
CURRENT
CONTROL
VOLTAGE
CONTROL
FSK
MODULATOR
TIME BASE
CONTROL
REGISTER
D03IN1407A
UART/SPI
DVdd DVss