Datasheet

Auxiliary analog and digital functions ST7540
40/44
Figure 25. Application schematic example with coupling transformer.
ST7540
WD
RxD
RxTx
REG/DATA
TxD
CLR/T
CD/PD
BU/THERM
MCLK
RSTO
PA_OUT
V
CC
15
17
X2
22
X1_OSCIN
21
Vsense
CL
16
24
TX_OUT
19
23
28
TEST2
27
TEST1
RX_IN
25
9
V
DD
26
VDC
13
1
4
5
6
8
7
10
11
2
GND
3
SVss
20
HOST
CONTROLLER
AC LINE
AC/DC
Converter
No External Components
for POWER LINE DRIVER
SINGLE SUPPY
5V Supply
for Host Controller
Clock & Reset for
Host Controller
5 Lines
Serial Interface
Voltage
Regulation
&
Current
Protection
R1
R2
RCL
C1
D03IN1412A
12
UART/SPI
VSS
PA_IN+
18
PA_IN-
14
Z1
Z2
R3
R4