Timing Of Packets In Rx Tasks - Texas Instruments CC253x User Manual

Link Layer Engine
Receive task, PRF_TASK_CONF.MODE = 0X, .START_CONF = 0, .REPEAT = 1:
t
Synth
t
Rx
Sync Search
CMD_RX
Receive task, PRF_TASK_CONF.MODE = 1X, .START_CONF = 0, .REPEAT = 1:
t
Synth
t
Rx
Sync Search
CMD_RX
Receive task, PRF_TASK_CONF.MODE = 1X, .START_CONF = 0, .REPEAT = 1:
t
Synth
t
Rx
Sync Search
CMD_RX
NOTE: The time given by
t . The setup and wait time for the synthesizer, receiver, and transmitter are denoted t
RX-TX
respectively.
For auto retransmit tasks, the time PRF_RETRANS_DELAY is the time from the end of a transmission to the
retransmission of the packet in case an ACK is not found or there is a CRC error; see
values of PRF_SEARCH_TIME and the maximum packet length in PRF_PAYLOAD_LEN should be set such
that this time can always be achieved. If it is not possible to achieve the retransmission time, the packet is
retransmitted as early as possible.
316
CC2541 Proprietary Mode Radio
t
Synth
Sync Search
Receive Packet
t
Rx-Tx
Receive Packet
t
Rx-Tx
Receive Packet
PRF_SEARCH_TIME
is denoted t
Figure 25-12. Timing of Packets in RX Tasks
Copyright © 2009–2014, Texas Instruments Incorporated
t
Synth
t
Rx
Receive Packet
t
Synth
t t
Tx Rx
Sync Search
Transmit ACK
t
Synth
t t
Tx Rx
Transmit ACK
and the time given by
Search
SWRU191F – April 2009 – Revised April 2014
www.ti.com
t
Search
t
Rx
Sync Search
Give up sync search,
end task
Receive Packet
t
Search
Sync Search
Give up sync search,
end task
PRF_RX_TX
is denoted
, t , and t ,
Synth TX RX
Figure 25-13. The
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