DR7003-DK RFM, DR7003-DK Datasheet - Page 7

• Manufacturer Part Number: DR7003-DK
• Description: 3G DEVELOPMENT KIT 303.825 MHZ
• Manufacturer: RFM
• Type: Transceiverr

Specifications of DR7003-DK

• Frequency: 303.825MHz
• For Use With/related Products: DR7003
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 583-1047

RF Monolithics, Inc.
Rev1
2.9 Test Points
2.10 Custom Development Area
2.11 Communication Link Protocol
Testpoints are provided to monitor the functions of the IC such as interface, TX data, RX data, Baseband
data, recovered clock, and UART communications. Refer to Figure 10.
The custom development area is available for developing custom firmware with another processor other
than the on-board Silicon Labs device. The testpoints to the left of the development area may be used as
I/O to the device by simply soldering a wire from the testpoint to the appropriate pin on the custom device.
The 3G configuration software may be used to “disengage” the on-board processor from the I/O, enabling
full custom development. Refer to Figure 11.
Almost all two-way wireless data communications use some form of packet protocol to automatically
assure information is received correctly at the correct destination. The protocol provided with the 3G
Development Kits is a link-layer protocol, and includes the following features:
Also included with the Kits is a simple terminal program with source code to provide an example of
interfacing host (application) software to the Virtual Wire link layer protocol. Most users will develop
specific host software to match the needs of their application. The protocol software does not require or
support hardware flow control, so the host software will have to do some timekeeping to interface the
• 16-bit ISO 3309 error detection calculation to test message integrity
• 4-bit TO/FROM address routing with 15 different node addresses available
• ASCII or binary message support, up to 32 bytes per packet
• Automatic packet retransmission until acknowledgment is received; 8 retries with semi-
random back-off delays plus “acknowledge” and “link failure” alarm messages.
[phone] toll-free in U.S. and Canada
Figure 11. Prototyping Area
Figure 10. Testpoints
www.rfm.com
Email: [e-mail]
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