ST7538Q 데이터 시트보기 (PDF) - STMicroelectronics

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ST7538Q

FSK power line transceiver

STMicroelectronics 

ST7538Q

Pin settings

Table 1. Pin description (continued)

Pin N° Name

Type

Description

25

SGND Supply

Analog Signal Ground

26

XOUT Analog Output

Crystal Output

27

XIN

Analog Input

Crystal Oscillator Input - External Clock Input

28

AVdd Supply

Analog Power supply.

29 Vsense(3) Analog/Input

Output Voltage Sensing input for the voltage control loop

30

TEST2 Analog/Input

Test Input must be connected SGND

31

RxFO Analog/Output

Receiving Filter Output

32

RAI

Analog/Input

Receiving Analog Input

33

VDC Power

5V Voltage Regulator Output

34

NC

floating

Must Be connected to DVss.

35

TEST1 Digital/Input

Test input. Must Be connected to DVss.

with internal pull-down

36

REGOK Digital/Output

Security checksum logic output

"1" - Stored data Corrupted

"0" - Stored data OK

37 C_MINUS(4) Analog/Input

Op-amp Inverting Input.

38 C_PLUS(5) Analog/Input

Op-amp Not Inverting Input.

39

NC

floating

Must Be connected to DVss

40

C_OUT Analog/Output

Op-amp Output

41

GND Supply

Substrate Ground (same function as PIN 6)

42

PG

Digital/Output

Power Good logic Output

"1" - VDC is above 4.5V and DVdd is above 3.125V

"0" - VDC is below 4.25V or DVdd is below 2.875V

43 REG_DATA Digital/Input

Mains or Control Register Access Selector

with internal pull-down "1" - Control Register Access

"0" - Mains Access

44

NC

floating

Must be connected to DVss.

1. If not used this pin must be connected to VDC

2. Cannot be left floating

3. Cannot be left floating

4. If not used this pin must be connected to VDC

5. If not used this pin must be tied low (SGND or PAVss or DVss)

7/44

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