Frequency Hopping Table - Analog Devices ADRV9005 Reference Manual

Reference Manual
FREQUENCY HOPPING
Note in the PLL Mux mode, the rising edge of Tx_Setup or Rx_Setup before a HOP signal edge (the start of hop frame n or end of hop frame
n-1) indicates if the hop frame n+1 is operated on Tx or Rx. There is one frame delay in the PLL Mux mode. In another word, to operate Tx on
hop frame n+1, the rising edge should appear at hop frame n-1.
The following timing diagram describes the PLL Retune mode.
Figure 107 shows that, with the PLL Retune mode, the same PLL is used (either PLL1 or PLL2). Once the hop frame ends, it starts to retune
to the new frequency. Another major difference from the PLL Mux mode is that the rising edge of Tx_Setup or Rx_Setup before a HOP signal
edge (the start of hop frame n or end of hop frame n-1) indicates if the hop frame n is operated on Tx or Rx instead of n+1. There is no one
frame delay in the PLL Retune mode. In another word, to operate Tx on hop frame n+1, the rising edge should appear at hop frame n.
PLL retune with dual hop is similar to PLL retune mode described previously except in this mode, two hop signals are used. Hop signal 1 will
always control channels associated with LO1 and hop signal 2 will always control channels associated with channel 2. Assign any channel
(Tx1/Rx1/Tx2/Rx2) to any LO (LO1/LO2). The timings of hop 1 and hop 2 is described in the
could be viewed as having two independent TDD transceivers.
PLL lock time depends on the PLL reference frequency, which is discussed later.
The four hopping modes, as shown in

FREQUENCY HOPPING TABLE

Hopping Table Definition and Entries
All modes of FH require the use of a frequency hopping table. A frequency hopping table is a list of frequencies and other operational
parameters for each hop frame.
The ADRV9001 supports the loading of two tables (table A and B), each with a minimum length of 1, and a maximum length of 64 entries (a
total of 128 hop entries/frequencies, if two tables are used).
An entry in the frequency hopping table is defined as in
Table 49. Hop Table Entry
Parameter
hopFrequencyHz
rx1OffsetFrequencyHz
rx2OffsetFrequencyHz
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Figure 107. PLL Retune Timing Diagram Example
Table 48, also specify the method of loading a hopping table, which is discussed in the following sections.
Table 49.
Descriptions
Operating frequency, in Hz.
The intermediate frequency, if a frame is Rx1.
The intermediate frequency, if a frame is Rx2.
ADRV9001
Dual Hop Timing section. Using dual hop mode
Rev. A | 119 of 377