Analog Devices ADRV9002

UG-1828 Preliminary Technical Data
Rev. PrB | Page 72 of 277
Default Timing Parameters for Transmit Channels
Figure 66 shows the ADRV9001 transmitter required timing parameters and their minimum, maximum, and default values as well as
some recommendations are summarized in Table 25.
TX_INTERFACE
PIN: TX_ENABLE
TX ANALOG POWER
TX ON: ANTENNA POWER
t
RxGT
VALID DATA
t
RxEnaRise2On
t
RxEnaRise2On
t
RxEnaHold
t
RxEnaFall2Off
t
RxEnaFall2Off
24159-067
Figure 66. Transmit Timing Parameters
Table 25. ADRV9001 User Provided Transmit Timing Parameters
Timing Parameter Min Value Max Value Comment
enableRiseToAnalogOnDelay
(t
TxEnaRise2AnaOn
)
Max of the following values:
0,
propagationDelay –
enableSetupDelay,
t
PowerUpPSM
(for the maximum
intended power savings mode)
91 ms/scaleFactor Default = min
enableRiseToOnDelay
(t
TxEnaRise2On
)
enableRiseToAnalogOnDelay +
enableSetupDelay
91 ms/scaleFactor
Default = min
Not needed if not controlling LNA power
enableGuardDelay
(t
TxGT
)
(Not Used Currently)
0 91 ms/scaleFactor
Default = min
Can increase to non-zero if performance
degradation is observed and the channel
is transmitting for some time before the
start of the actual frame
(Forced to be 0 currently by ADRV9001).
enableHoldDelay
(t
TxEnaHold
)
(Not Used Currently)
0 91 ms/scaleFactor
Default = min
Can increase if performance degradation is
observed and the channel is transmitting
for some time after the end of the actual
frame
(Forced to be 0 currently by ADRV9001).
enableFallToOffDelay
(t
TxEnaFall2Off
)
enableHoldDelay
enableHoldDelay +
propagationDelay
Default = max
Can decrease if not all data sent through
interface must be transmitted.
Default Timing Parameters for Receiver Channels
Figure 67 shows the ADRV9001 receiver required timing parameters and their minimum, maximum, and default values as well as some
recommendations are summarized in Table 26.
RX ON: LNA POWER OUT
PIN: RX_ENABLE
RX ANALOG POWER
RX_INTERFACE
t
RxGT
t
RxEnaRise2On
t
RxEnaRise2AnaOn
t
RxEnaHold
t
RxEnaFall2Off
t
RxEnaFall2Off
24159-068
Figure 67. Receiver Timing Parameters