ST7540 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7540

FSK power line transceiver

STMicroelectronics 

ST7540

2

Pin settings

2.1

Pin connection

Figure 2. Pin connection (top view)

CD_PD 1

REG_DATA 2

GND 3

RxD 4

RxTx 5

TxD 6

BU/THERM 7

CLR/T 8

VDD

9

MCLK 10

RSTO 11

UART/SPI 12

WD 13

PA_IN- 14

Pin settings

28

TEST2

27

TEST1

26

VDC

25 RX_IN

24

CL

23

Vsense

22

X2

21 X1_OSCIN

20

SVSS

19

TX_OUT

18

PA_IN+

17

VCC

16

VSS

15

PA_OUT

2.2

Pin description

Table 1. Pin description

N° Name

Type

Description

1 CD_PD Digital/Output

Carrier, preamble or frame header detect output.

"1" No carrier, preamble or frame header detected

"0" Carrier, preamble or frame header detected

2

REG_DATA

Digital/Input

with internal pull-down

Mains or control register access selector

"1" - Control register access

"0" - Mains access

3

GND Supply

Digital ground

4

RxD

Digital/Output

RX data output.

5

RxTx

Digital/Input

with internal pull-up

Rx or Tx mode selection input.

"1" - RX Session

"0" - TX Session

6

TxD

Digital/Input

with internal pull-down

TX data input.

5/44

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