Rainbow Electronics ATA5746 User Manual
Page 3

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