Data Sheet

CC1101
SWRS061B Page 65 of 93
0x06: PKTLEN – Packet Length
Bit Field Name Reset R/W Description
7:0 PACKET_LENGTH 255 (0xFF) R/W Indicates the packet length when fixed packet length mode is enabled.
If variable packet length mode is used, this value indicates the
maximum packet length allowed.
0x07: PKTCTRL1 – Packet Automation Control
Bit Field Name Reset R/W Description
7:5 PQT[2:0] 0 (0x00) R/W Preamble quality estimator threshold. The preamble quality estimator
increases an internal counter by one each time a bit is received that is
different from the previous bit, and decreases the counter by 8 each time
a bit is received that is the same as the last bit.
A threshold of 4·PQT for this counter is used to gate sync word detection.
When PQT=0 a sync word is always accepted.
4 Reserved 0 R0
3 CRC_AUTOFLUSH 0 R/W Enable automatic flush of RX FIFO when CRC in not OK. This requires
that only one packet is in the RXIFIFO and that packet length is limited to
the RX FIFO size.
2 APPEND_STATUS 1 R/W When enabled, two status bytes will be appended to the payload of the
packet. The status bytes contain RSSI and LQI values, as well as CRC
OK.
1:0 ADR_CHK[1:0] 0 (00) R/W Controls address check configuration of received packages.
Setting Address check configuration
0 (00) No address check
1 (01) Address check, no broadcast
2 (10) Address check and 0 (0x00) broadcast
3 (11) Address check and 0 (0x00) and 255 (0xFF)
broadcast