TRC103 RFM, TRC103 Datasheet - Page 20

• Manufacturer Part Number: TRC103
• Description: RFIC TRANSCEIVER MULTI-CHANNEL F
• Manufacturer: RFM
• Series: TRCr

Specifications of TRC103

• Frequency: 863MHz ~ 960MHz
• Data Rate - Maximum: 100kbps
• Modulation Or Protocol: FSK, OOK
• Applications: General Purpose
• Power - Output: 11dBm
• Sensitivity: -112dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 4mA
• Current - Transmitting: 30mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Other names: 583-1095-2

3.9.2 Variable Length Packet Mode
The variable length packet mode is selected by setting bit PKTCFG1E_Pkt_mode[7] to 1. The packet format
shown in Figure 14 is programmable and is made up of the following fields:
In variable length packet mode, the length of the rest of the payload is given by the first byte written to the FIFO.
The length byte itself is not included in this count. The PKTCFG1C_Pkt_len[6..0] parameter is used to set the
maximum received payload length allowed. Any received packet having a value in the length byte greater than
this maximum is discarded. The variable length packet format accommodates payloads, including the length byte,
up to the length of the FIFO.
3.9.3 Extended Variable Length Packet Mode
The extended variable length packet mode is selected by setting bit PKTCFG1E_Pkt_mode[7] to 1 and setting
PKTCFG1C_Pkt_len[6..0] to a value between 65 and 127. The packet format shown in Figure 15 is programma-
ble and is made up of the following fields:
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1. Preamble
2. Start pattern (network address)
3. Length byte
4. Node address byte (optional)
5. Data bytes
6. Two-byte CRC checksum (optional)
1. Preamble
2. Start pattern (network address)
3. Length byte
4. Node address byte (optional)
5. Data bytes
6. Two-byte CRC checksum (optional)
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Figure 14
Figure 15
TRC103 - 12/15/10
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