Analog Devices ADRV9002

Preliminary Technical Data UG-1828
Rev. PrB | Page 95 of 277
Delay Parameter Descriptions Bounds Notes
enableRiseToAnalogOnDelay
(tTxEnaRiseToAnaOn)
Delays the power up of
the AFE relative to the
hop edge.
Min: 0
Max:
enableRiseToOnDelay -
enableSetupDelay
This parameter can be used to delay the Tx
analog power up if the transition time is greater
than the analog power up time. This delay can
also be used to delay the analog power up
depending on propagation delay requirements.
enableGuardDelay
Not used in frequency
hopping. Delay from
hop edge to first valid
data arriving over
interface.
NA Not used
enableHoldDelay
Not used in frequency
hopping. Delay from
hop edge and Tx
interface being
disabled.
NA
Hop edge indicates the end of the frame on air.
The datapath and interface are not kept on
beyond this point.
enableFallToOffDelay
Delay between the hop
edge and powering
down the analog and
Tx antenna switch. Not
used in frequency
hopping.
NA
Hop edge indicates the end of frame on air. The
analog and Tx antenna switch can be powered
down immediately.
Rx Timing
24159-491
FRAMING ON AIR
FRAMING AT BBIC
PIN: HOP
PIN: Rx SETUP
Rx INTERFACE
Rx ANALOG POWER
Rx ON: LNA POWER OUT
DWELL
t
RxPD
t
RxPD
t
RxEnaHold
Rx
Rx
DWELL
VALID DATA
TRANSITION
t
RxEnaRise2On
t
RxEnaRise2AnaOn
t
RxEnaSetup
t
RxGT1
Figure 95. Rx Timing
Table 39. Rx Timing Parameters
Delay Parameter Descriptions Bounds Notes
enableSetupDelay
(trxEnaSetup)
Time taken for Navassa to
power up the AFE. This time
may nor may not include
PLL retuning time.
N/A No PLL retuning @ hop edge: 7 µs
PLL retuning @ frame boundary:
LO_retune_time
propagationDelay
Delay from antenna to Rx
interface.
N/A
This parameter will be dynamic profile
dependent and board layout dependent. It
need not be specified to Navassa, however,
it can be used to derive other values for
other parameters required by Navassa.
enableRiseToOnDelay
Delay between hop edge
and the LNA power up. If
Navassa is not controlling
LNA powerup, this variable
is not needed.
Min: enableRiseToOnDelay
+ enableSetupDelay
Max: -