Analog Devices ADRV9001 User Manual page 118

Reference Manual
FREQUENCY HOPPING
Table 48. Frequency Hopping Timing Parameters Minimum Timing
Timing Parameter
t
NextTxFramePrepare
t
NextRxFramePrepare
t (case 1)
TxSetupTime
t (case 2)
TxSetupTime
t (case 1)
RxSetupTime
t (case 2)
RxSetupTime
t
hopEdgeToChannelSetupFall
t
ChannelSetupRiseToHopEdge
t
ChannelSetupFallToHopEdge
Transmitter Timing
For the PLL Mux mode, the Tx setup falling edge starts the Tx interface, as shown in
rising edge starts the Tx interface, as shown in
analog.com
Figure 111. Frequency Hopping Minimum Timing
Description
Time required by the internal controller to prepare the next transmitter frame.
Time required by the internal controller to prepare the next receiver frame.
Time taken from hop edge to transmitter power up if no LO retune is required and
t is zero.
txRiseToAnaOn
Time for a consecutive transmitter frame. Performs transmitter attenuation ramp and LO
muxing. The transmitter analog is not fully powered up or down and digital remains on.
Time taken from hop edge to receiver power up if no LO retune is required and
t is zero.
rxRiseToAnaOn
Time taken for a consecutive receiver frame.
Minimum time between the hop edge and when the channel setup can go low. This
restriction only applies for Tx.
Minimum time required between the channel setup rising edge and hop edge.
Minimum time required between the channel setup falling edge and hop edge. This
restriction only applies to Tx.
Figure 113.
Figure 112. Frequency Hopping Typical Tx Timing for PLL Mux Mode
Time (µs at 184.32 MHz)
Min: 13 µs
Min: 13 µs
Min: 6.7 µs
Min: 4 µs
Min: 6.7 µs
Min: 2 µs
0.42 µs
At least >3 µs
0.42 µs
Figure 112. But for the PLL Retune mode, the Tx setup
ADRV9001
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