Analog Devices ADRV9002

UG-1828 Preliminary Technical Data
Rev. PrB | Page 90 of 277
Note there will be examples provided in the TES. And the ranges of the fields should be the same as non-frequency hopping mode.
Frequency Hopping Table Modes
ADRV9001 supports utilizing the frequency hopping tables in several different ways. This section details the available methods of
updating, indexing, and switching between frequency hopping tables.
During operation, an entry in the table is read at the channel setup rising edge. Therefore, like the channel information, the hop entry is
read one hop frame in advance. This gives time to prepare the channel and retune the LO.
Automatic Increment
The standard mode of operation in ADRV9001 is automatic increment mode. In this mode, frequency hopping begins at index 0, and
continues to iterate over the table until the number of table entries has been reached. Once reached, it wraps back around to index 0.
A hop frame entry is read at the channel setup rising edge, and the index to the table is incremented at the hop edge.
24159-485
CHANNEL
SETUP
SIGNAL
HOP
SIGNAL
FREQUENCY HOPPING
TABLE
ENTRY 0
hopFrequencyHz
rxOffsetFrequencyHz
rxGainIndex
txAtten_mdB
ENTRY 1
ENTRY 2
READ HOP ENTRY 0
READ HOP ENTRY 1
READ HOP ENTRY 0
READ HOP ENTRY 2
Figure 88. Automatic Table Increment
Index by Pin
Rather than automatically incrementing through a frequency hopping table, the user can use up to 7 DGPIO pins to index any valid
entry in the hop table.
F3 F12
1 10 0
D1 D0D3 D2
HOP
SIGNAL
CHANNEL
SETUP
NAVASSA SAMPLES
DGPIO, TAKING
INDEX OF C
NAVASSA SAMPLES
DGPIO, TAKING
INDEX OF 3
24159-486
BBIC SET
DPGIO = 0x3
0 01 1
D1 D0D3 D2
BBIC SET
DPGIO = 0xC
Figure 89. Index by Using DGPIO Pins
At initialization, the user can assign up to 7 DPGIO pins to provide 64 possible indices to a frequency hopping table.
During operation, the user should set the DGPIO pins prior to the upcoming channel setup rising edge. At each channel setup rising
edge, ADRV9001 will sample the DGPIO pins.
The following restrictions apply to this mode;
• Each DGPIO pin represents a bit in the index, the ADRV9001 samples each assigned pin to form a full index to the table.