Configuration And User Information; Calibration - Analog Devices ADRV9001 User Manual

Preliminary Technical Data

CONFIGURATION AND USER INFORMATION

We ask the user to provide the following information to ADRV9001 for frequency hopping.
Mode of Operation
•
Channel Mask for Hop 1
•
Channel Select Mode
•
Frequency Select Mode
•
Gain Select Mode
•
The following parameters are not implemented yet, only an indication of what is needed.
Table 34. Parameters for Frequency Hopping Configuration
Parameter
Mode Very fast, fast,
normal, slow.
Channel mask [3:0] = TX2, TX1,
Hop 1 RX2, RX1
Channel select PIN or API
mode
Frequency PIN, API,
select mode
HIGH-PRIORITY
MAILBOX,
AUTO
Gain select PIN, API,
mode
HIGH PRIORITY
MAILBOX
Timing Parameters
In the case of Tx only or Rx only mode, there is a possibility of propagation delay longer than the hop frame. For Tx, ensure that the data
is on the antenna at the right time. Similarly, for Rx we need to make sure that receiving data should be waited for the right amount of
time so that at the interface there is no loss of data. Therefore, the following timing parameters need to be properly set up to guarantee
the data frames at Tx and Rx are properly set up at the right time.
Details of timing parameters are explained in the Timing Parameters Control section of this document.
Frequency Hopping Table
User has the option of using a frequency hopping table. If it is used, the parameters in this table need to be provided.
The hop frequency list contains the list of operating frequencies to be hopped over.
The band index list provides a mapping of each frequency in the hop frequency list to a frequency region. This is used to help firmware
load the appropriate calibration coefficients for each hop frame. This is discussed more in the next section.
The following parameters are not implemented yet, and serve only as an indication of what is forthcoming. The table is updated as
parameters become available.
Table 35. Parameters for Frequency Hopping Tables
Parameter
Number of hop
frequencies
Hop frequency list
Band index list

CALIBRATION

Initial Calibration
Calibration is done at the initialization stage rather than the hop stage. During initialization, utilize the frequency table to do the
calibration. Calibration results or coefficients are saved in ARM memory and reloaded later at hop time.
Notes
Indicates to software what mode to prepare for.
Indicates which channels are operating in FH mode on the hop 1 pin.
1T1R or 2T2R diversity can be supported using one hop pin.
Indicates how the user selects an upcoming channel, typically PIN
Indicates how the user selects an upcoming frequency. Either by PIN/SPI indicating a table index,
or high priority mailbox indicating frequency. AUTO means auto-increment through the table.
Indicates how the user selects gain for the next operating frequency.
0 to 64
List of hop frequencies.
List of frequency to band/region
mapping
Notes
The number of hop frequencies. 0 if no table is used.
Ignored if the number of hop frequencies is 0.
List to map frequencies in hop frequency list to specific
bands/regions.
Rev. PrA | Page 87 of 253
UG-1828