DVK-PRM122 Laird Technologies, DVK-PRM122 Datasheet - Page 39

• Manufacturer Part Number: DVK-PRM122
• Description: DEV KIT PRM122
• Manufacturer: Laird Technologies
• Series: FlexRF™r
• Type: Transceiver, FHSSr

Specifications of DVK-PRM122

• Frequency: 2.4GHz
• Output Power: 50 mW
• Antenna: U.FL Coaxial
• Silicon Manufacturer: Laird Technologies
• Kit Application Type: Communication & Networking
• Application Sub Type: Wireless Module
• Features: Very Robust In The Presence Of Interference Global
• Rohs Compliant: Yes
• For Use With/related Products: PRM122
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

LT2510
Wireless Module
API OPERATION
36 www.lairdtech.com
API Operation is a powerful alternative to the default Transparent operation of the LT2510 and provides dynamic
packet accounting abilities to the OEM Host without requiring extensive programming by the OEM Host. API
operation utilizes specific packet formats. The API features can be used in any combination that suits the OEM’s
specific needs and can be different between radios operating on the same network.
API SEND DATA COMPLETE
API Send Data complete can be used as a software acknowledgement indicator. When a radio sends an addressed
packet, it will look for a received acknowledgement (transparent to the OEM Host). If an acknowledgement is not
received, the packet will be retransmitted until one is received or all retries have been exhausted.
For applications where data loss is not an option, the OEM Host may wish to monitor the acknowledgement
process using the API Send Data Complete. If an acknowledgement is not received (failure), the OEM Host can
send the packet to the transceiver once again. Because the Send Data Complete is reliant upon a successful RF
Acknowledgement from the receiving radio a false positive is not possible, but a false negative may occur. That is,
the receiving radio may have received the packet successfully, but the acknowledgement was not received at the
transmitting radio. For Broadcast packets, the Send Data Complete will always report success.
API Send Data Complete is enabled when bit-2 of the API Control (Address 0xC1) byte is enabled. The transceiver
sends the OEM Host the data shown in Figure 1 upon receiving an RF acknowledge or exhausting all attempts.
FIGURE 1: SEND DATE COMPLETE PACKET FORMAT
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