5. The host microcontroller will clock the received bits out of the FIFO.
6. Clocking bits out of the receive FIFO begins with two dummy clock cycles. The bits on these two clock
cycles are discarded.
7. The first bit from the FIFO is output on the third clock. After clocking out a group of eight bits, check the
INT flag line. The flag will reset after the next-to-last byte is clocked from the FIFO. At this point clock the
final eight bits from the FIFO.
8. All bytes have now been clocked from the FIFO. In this example, the two
Sender address bytes and the four payload data bytes will be output.
9. Three more clock cycles must follow the final FIFO byte in order to reset the TRC104
to receive the next packet. The bits on these three clock cycles are discarded.
10 Burst Packet Mode Serial Port Message Examples
Sections 10.1 through 10.4 below provide examples of Burst Packet Mode serial port transmit and receive
messages. In each example the payload data bytes consist of the following ASCII string:
(stx)TRC104 Range Test Demo(etx)
This 24 byte string in hexadecimal is:
02 54 52 43 31 30 34 20 52 61 6E 67 65 20 54 65 73 74 20 44 65 6D 6F 03
The FIFO length is set to 24 bytes, or 0X18. The two-byte destination address used is 0XAA02, and the sender
(local device) address used is 0XAA01. Where sender address transmission is enabled, the TRC104 is also
configured to output the sender address in front of the received payload data bytes (see Section 8.6, Table 21).
10.1 Destination Address from Configuration Registers, No Sender Address
Transmit hex message: 02 54 52 43 31 30 34 20 52 61 6E 67 65 20 54 65 73 74 20 44 65 6D 6F 03
Receive hex message: 02 54 52 43 31 30 34 20 52 61 6E 67 65 20 54 65 73 74 20 44 65 6D 6F 03
10.2 Destination Address Written by Host, No Sender Address
Transmit hex message: AA 02 02 54 52 43 31 30 34 20 52 61 6E 67 65 20 54 65 73 74 20 44 65 6D 6F 03
Receive hex message: 02 54 52 43 31 30 34 20 52 61 6E 67 65 20 54 65 73 74 20 44 65 6D 6F 03
10.3 Destination and Sender Addresses from Configuration Registers
Transmit hex message: 02 54 52 43 31 30 34 20 52 61 6E 67 65 20 54 65 73 74 20 44 65 6D 6F 03
Receive hex message: AA 01 02 54 52 43 31 30 34 20 52 61 6E 67 65 20 54 65 73 74 20 44 65 6D 6F 03
10.4 Destination Address Written by Host, Sender Address from Configuration Register
Transmit hex message: AA 02 02 54 52 43 31 30 34 20 52 61 6E 67 65 20 54 65 73 74 20 44 65 6D 6F 03
Receive hex message: AA 01 02 54 52 43 31 30 34 20 52 61 6E 67 65 20 54 65 73 74 20 44 65 6D 6F 03
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