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Rainbow Electronics ATA5746 User Manual

Page 3

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3

4596A–RKE–05/06

ATA5745/ATA5746 [Preliminary]

Figure 1-2.

Pinning

QFN24

Table 1-1.

Pin Description

Pin

Symbol

Function

1

TEST2

Test pin, during operation at GND

2

TEST1

Test pin, during operation at GND

3

CLK_OUT

Output to clock a connected microcontroller

4

CLK_OUT_CTRL1

Input to control CLK_OUT (MSB)

5

CLK_OUT_CTRL0

Input to control CLK_OUT (LSB)

6

ENABLE

Input to enable the XTO

7

XTAL2

Reference crystal

8

XTAL1

Reference crystal

9

DVCC

Digital voltage supply blocking

10

VS5V

Power supply input for voltage range 4.5V to 5.5V

11

VS3V_AVCC

Power supply input for voltage range 2.7V to 3.3V

12

GND

Ground

13

LNA_GND

RF ground

14

LNA_IN

RF input

15

SENSE

Sensitivity control resistor

16

SENSE_CTRL

Sensitivity selection
Low: Normal sensitivity, High: Reduced sensitivity

17

RSSI

Output of the RSSI amplifier

18

TEST3

Test pin, during operation at GND

19

RX

Input to activate the receiver

20

BR0

Bit rate selection, LSB

21

BR1

Bit rate selection, MSB

22

ASK_NFSK

FSK/ASK selection
Low: FSK, High: ASK

23

CDEM

Capacitor to adjust the lower cut-off frequency data filter

24

DATA_OUT

Data output

GND

Ground/backplane (exposed die pad)

TEST3

D

A

T

A_OUT

BR1

RX

BR0

ASK_NFSK

CDEM

XT

AL2

VS5V

GND

V

S3V_A

VCC

D

VCC

XT

AL1

RSSI

LNA_IN

LNA_GND

SENSE

SENSE_CTRL

TEST2

7

8

9 10 11 12

24

13

14

15

16

17

18

6

5

4

3

2

1

23 22

TEST1

CLK_OUT_CTRL0

ENABLE

CLK_OUT_CTRL1

CLK_OUT

21 20 19