Atmel ATAB5749 Installation and operating instructions

9138B-AUTO-07/15
Introduction
The Atmel®software development tool RF Design Kit enables the programming and setting
of a wide range of RF automotive products to build RF systems for development purposes.
The software is particularly suitable for setting parameters of UHF receiver and transmitter
demo boards.
The ATA5749, Atmel’s newest UHF transmitter, boasts many new features. The main new
feature is its programability. Parameters such as transmit power, the transmit frequency,
and the frequency deviation for FSK modulation can be programmed. The latest RF Design
Kit (version 1.0.7) supports the ATAB5749, which is the demo board for the transmitter
ATA5749. This application note provides an introductions to using the ATAB5749 with the
RF Design Kit software.
APPLICATION NOTE
Getting Started with ATAB5749
Using RF Design Kit Software
ATAB5749

ATAB5749 [APPLICATION NOTE]
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1. Delivery Status of the Transmitter Board
1.1 Hardware
The front and the rear view of the transmitter board are illustrated in Figure 1-1. The schematic of the board is shown in
Figure 1-2 on page 3, and the board layout information is showed in Figure 1-3 on page 4 to Figure 1-5 on page 5. The bill of
material of the transmitter board is listed in Table 1-1 on page 5.
The board contains the following parts:
●Lithium battery
●Transmitter matched to the loop antenna.
Note: 1. Atmel offer 2 different demo boards for the ATA5749 due to the Loop Antenna matching, matching to the
315MHz and 433.92MHz.
Generally the ATA5749 can be set in both 315MHz and 433.92MHz transmit frequency with one 13.0MHz crys-
tal. So the 315MHz board can be reprogrammed for 433.92MHz transmitting purposes. In this case the
matching elements must be changed to get the optimal transmit power.
Verification with 50matching is possible.
●AVR®ATmega88 is used on the board for programming
●An external microcontroller can be used to set the ATA5749 on the boards since some test points are placed on the
control and the programming traces of ATA5749.
Note: The connection between the ATmega88 and ATA5749 can be disconnected by desoldering the jumpers (BR1
to BR4). (See the schematic of the board in Figure 1-2 on page 3.)
●Three buttons are available.
●Two Light Emitting Diodes are available to show the activity status of the board. The LED 1 indicates that the
calibration of the internal RC oscillator of ATmega88 exceeds the defined tolerance limits in the software of
ATmega88. LED 2 indicates the transmit functions of the transmitter board.
Note: The internal RC oscillator is always calibrated internally when any button is pushed. In case that no exact cali-
bration value can be calculated, the closest value will be taken.
A short flash of the LED 2 indicates the start of the function “Single Telegram” or “Single Pattern” when a button
is pressed. The same indicator can be also recognized for start and end of any continuous functionality like
“Continuous Telegram”, “Continuous Pattern”, etc.
Figure 1-1. ATAB5749 Demo Board Front and Rear View

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ATAB5749 [APPLICATION NOTE]
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Figure 1-2. Schematic of the Demo Board ATAB5749
S1
S2
12
34
12
34
S3
12
34
B1 B2 B3 B4 B5 B6 B7 B8
A1 A2 A3 A4 A5 A6 A7 A8
X1
-
+
2
1
VS
GND
XTO2
XTO1
SCK
SDIN_TXDIN
ANT1
6
7
8
9
4
5
3
2
EN
ADC7
AREF
PB5
AVCC
ADC6
GND21
PC0
PC1
19
20
17
18
23
24
21
22
6
5
8
7
2
1
4
3GND3
GND5
PB7
PB6
VCC6
VCC4
PD4
PD3
PB4 PB3 PB2 PD7 PD6 PD5
11 12
9
10 15 16 13 14
30 29 32 31 26 25 28 27
PB0 PB1
PC2 PC3 PC4 PD0 PD1 PD2 PC6 PC5
CLK
10 1
ANT2
U1
BA2032SM
C1
C8
C7
C9
C10
GND1CLK1 STXDIN1EN1 SCK1 VS1
C11 C12
BR5
BR3 BR4BR1
R2
BR2
R3R4
D1D2
PB2_ENABLE PD1_SDI
B6
B8B6
A7MOSIMISOA1
A1
PD1_SDI
B8
MISO
MOSI
PB2_ENABLE
B7
SCK
SCK
PD4_SCK
X3
L2
Loop Antenna
w = 1 mm
25 mm x 25 mm
L1
C5
C14
C13
C6
C3
C2
Q1
Quarz
VS
VS
VS
VS
X5
MOSI
PD4_SCK
SCK VS
A7
X4
VS
B7
Q1a
Quarz

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Figure 1-3. Top Layer of the Demo Board ATAB5749
Figure 1-4. Bottom Layer of the Demo Board ATAB5749

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ATAB5749 [APPLICATION NOTE]
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Figure 1-5. Designator
Table 1-1. Bill of Material of the Demo Board ATAB5749
Components Pieces 315MHz 433MHz Value Tolerance Material Housing Manufacturer/
Distributor
BR1, BR2,
BR3, BR4 4 x x 0 0603
R2, BR5 2 x x 0 0402
R3, R4 2 x x 1k10% 0603
C1 1 x x 100nF 10% X7R 0603 Murata®
C2, C3 2 x x 15pF 2% COG 0603 Murata
C5 1 x x 68nF 10% X7R 0603 Murata
C6 1 x x 1nF 10% X7R 0603 Murata
C7 n.m.
C8 1 x 3.9pF 5% COG 0603 Murata
1 x 18pF 5% COG 0603 Murata
C9 1 x 27pF 5% COG 0603 Murata
1 x 82pF 5% COG 0603 Murata
C10 1 x 39pF 5% COG 0603 Murata
1 x 82pF 5% COG 0603 Murata
C11 1 x 3pF 5% COG 0603 Murata
1 x 5pF 5% COG 0603 Murata
C12 1 x 2.2pF 5% COG 0603 Murata
1 x 8.2pF 5% COG 0603 Murata
C13 n.m.
C14 1 x 100nF 10% X7R 0603 Murata

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1.2 Software
The board ATAB5749 is be delivered with default settings as detailed in the Table 1-2 below.
In order to use the ATAB5749 board, an additional board as well as the RF Design Kit software is needed. Either the
ATAB-RFMB or ATAB-STK-F is used as a microprocessor board interfacing the RF Design Kit software and the transmitter
board. For further information about the hardware refer to the application notes “ant_hd-rf-desing-kit_041105_sec.pdf” and
“ant_hd-flamingo_181105_sec.pdf”.
L1 1 x 27nH 2% 0603CS 0603 Coilcraft®
1 x 47nH 2% 0603CS 0603 Coilcraft
L2 1 x 12nH 2% 0603CS 0603 Coilcraft
1 x 27nH 2% 0603CS 0603 Coilcraft
Q1 1 x x 13MHz 5032//3225 KSS®
U1 1 x x ATA5749 TSSOP10 Atmel
U2 1 x x ATmega88 MLF32 Atmel
D1, D2 2 x x TLMD3100 P-LCC-2
(sizeB) Vishay®
Table 1-1. Bill of Material of the Demo Board ATAB5749 (Continued)
Components Pieces 315MHz 433MHz Value Tolerance Material Housing Manufacturer/ Distributor
Table 1-2. Software Default Settings of the ATAB5749
ATA5749 - 433MHZ ATA5749 - 315MHZ
Control Register - Values Control Register - Values
Band selection: 367MHz to 450MHz Band selection: 300MHz to 368MHz
RF frequency: 433.92MHz (FREQ = 14353) RF frequency: 315MHz (FREQ = 3741)
Modulation: FSK Modulation: FSK
FSK shift: ±30kHz (FSEP = 75) FSK shift: ±30kHz (FSEP = 75)
Output power (with 50
matching): +12.5dBm (PWR = 15) Output power (with 50 matching): +12.5dBm (PWR = 15)
Clock Only Mode: Normal Mode Clock Only Mode: Normal Mode
CLK output: 3.25MHz (fCLK =f
XTO/4) CLK output: 3.25MHz (fCLK =f XTO/4)
Clock on: Clock port is ON Clock on: Clock port is ON
Telegram
Data rate: 1,000Kbit/s (Manchester)
Preburst: 24 bits (24.000 ms)
Testword (Hex): F09AF09A
Pattern
TStep: 90.91µs
Pattern Length: 24 bit (2.1818ms)
Pattern (Hex): 0x5555h
Programmable Push Buttons
Button S1: Continuous telegram
Button S2: Single telegram
Button S3: Continuous carrier (unmodulated)

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ATAB5749 [APPLICATION NOTE]
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2. Getting Familiar with the RF Design Kit
To learn about the installation of the RF Design Kit software, refer to the application note
“ant_sd-rf-design-kit_041105_sec.pdf”. The following is a list of the first steps to take when working with the RF Design Kit
and the transmitter board:
●Connect the RS232 cable between the microprocessor board, the ATAB-RFMB or ATAB-STK-F, to an unused PC
serial port.
●Connect the Microprocessor board with a 12V power supply.
●Switch on the 12V DC power supply of the microprocessor board before running the RF design Kit software.
●The file “RF-Designkit.exe” runs the software and test the connection to the microprocessor board.
●The latest RF Design Kit software is the version 1.0.7. This can be seen from the Help menu refer to the Figure 2-1.
Figure 2-1. IRF Design Kit Software Version Information Window
●For the RF Design Kit Version 1.0.7, the AVR®software version on the microprocessor board must be version 1.0.10.
This information can be also seen from the Help menu. Please refer to Figure 2-2.
Figure 2-2. Information Window of the AVR Software Version on the Microprocessor Board

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●It is important to remove the lithium cell from the battery holder of the transmitter board before programming the board
with the microprocessor board. If the battery is still in the holder during the programming progress, an error message
will be generated by the software requesting removal of the battery. This error massage is illustrated in Figure 2-3.
Figure 2-3. Error Code for Removing the Battery during the Programming Process
●Plug the transmitter board into the socket on the microprocessor board. The RF transmitter type and the software
version of the microprocessor on the demo board can be observed by clicking on the Transmitter Information button
●After clicking the Transmitter Information button, the Info dialog box is displayed (see Figure 2-4). The firmware
version and the type of transmitter board is displayed.
Figure 2-4. Information Window of the Firmware Version and the Type of the Transmitter Board

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ATAB5749 [APPLICATION NOTE]
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●The correct transmitter can be selected from the Transmitter drop down menu (see Figure 2-5).
Figure 2-5. Transmitter Section by the Corresponding Part Number
●After selecting the correct transmitter, in this case the ATA5749 (315MHz) or ATA5749 (433MHz), a menu of
parameter settings is displayed (see Figure 2-6).
Figure 2-6. Parameter Settings of the Corresponding Part Number

ATAB5749 [APPLICATION NOTE]
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TX Buttons:
Control Register Table (CR-Table):
This table illustrates the internal register configuration of the ATA5749. The configuration bytes can be modified directly in
the CR-Table by clicking in the field of the binary value.
Figure 2-7. Control Register Table
Control Register Value (CR-Value) (Figure 2-8 on page 11):
This window interprets the register configuration setting of CR-Table. If the setting in the CR-Table is changed, the CR-Value
window shows the change automatically and vice versa. The following parameters of the ATA5749 can be set:
●Band Selection: either 300MHz to 368MHz or 367MHz to 450MHz.
●RF Frequency: The transmit frequency of the board can be determined by selecting the value of the FREQ register.
The green check mark in the drop down menu shows the FREQ values allowed; the red cross shows the values not
allowed.
●Modulation: sets the modulation of the board either to ASK Mode or FSK Mode
Load TX default settings into the RF design software. Note: this is not stored on the
transmitter board.
Load custom settings into the RF design software.
Save custom settings.
Read and display the whole current settings from the transmitter board.
Write the current settings from the RF Design software to the transmitter board.