Analog Devices ADRV9002 User Manual

UG-1828 Preliminary Technical Data
Rev. PrC | Page 188 of 338
The Round module can output 16-bit I/Q or 15-bit I/Q data to the Rx SSI output. If required, the Round module can output 16-bit I data
to the Rx SSI output with the 16-bit output Q data set as ‘0’.
NORMAL IQ OUTPUT MODE
The Normal IQ Output mode is applicable for both wideband and narrow band as the frequency discriminator bypassed. Except the
Rounding, all other modules can be bypassed. See Figure 175 ADRV9001 Rx narrow-band demodulator can be the common output stage
of Rx channel.
Figure 175. Rxnbdem in Normal IQ output mode
In the Normal IQ output mode, the rxnbdem can provide the signal processing resources as followed:
• a spur-free carrier frequency offset correction,
• a profile-switchable channel filter, and
• a precise IQ resampler (not supported by software yet).
All above resources can be manually enabled and controlled by the BBIC by API (will provide the support in the later software releases).
FREQUENCY DEVIATION OUTPUT MODE
The Frequency Deviation Output mode is only applicable for the narrowband modes. Except the Round and the Frequency
Discriminator, all other modules can be bypassed. See Figure 176. ADRV9001 Rx narrowband demodulator contains a frequency
discriminator hardware block. Cooperating with other hardware blocks, for example, the CFC/DDC, and programmable FIR filters, and
so on, ADRV9001 Rx narrowband demodulator can perform FSK and FM demodulation under the control of the BBIC.
Figure 176. Rxnbdem in Frequency Deviation Output mode
The FSK/FM demodulation can cover the standards listed as followed:
• Analog FM with 12.5 kHz channel bandwidth
• Analog FM with 20 kHz channel bandwidth
• Analog FM with 25 kHz channel bandwidth
• P25 Phase I with 12.5 kHz channel bandwidth
• DMR with 12.5 kHz channel bandwidth
Regarding to each standard at above, Table 77 lists the usage suggestion of each modules in the Frequency Deviation Output mode.
Table 77. Suggestion of rxnbdem Usages in the Frequency Deviation Output Mode
FM, 12.5kHz FM, 20kHz FM, 25kHz P25 I, 12.5kHz DMR, 12.5kHz
Input Sampling Clock 24 kHz or 48 kHz 48 kHz 24 kHz or 48 kHz
Signal FIFO Optional
CFC/DDC Enable for manual control
Rx Prog. FIR Enabled for channel filtering with 2 sets of FIR profiles
RESAMPLER
NB
PROGRAMMABLE
FIR
NB
PROGRAMMABLE
FIR
Rx
PROGRAMMABLE
FIR
Rx
PROGRAMMABLE
FIR
FREQUENCY
DISCRIMINATOR
RESAMPLER
SIGNAL
FIFO
SIN
DDS
COS
DECIMATION
FILTERS
I
Q
I
Q
I
Q
I
Q
I
Q
I
Rx SSI
INTERFACE
Q
rxnb_dem
ROUND
24159-133
RESAMPLER
NB
PROGRAMMABLE
FIR
NB
PROGRAMMABLE
FIR
Rx
PROGRAMMABLE
FIR
Rx
PROGRAMMABLE
FIR
FREQUENCY
DISCRIMINATOR
RESAMPLER
SIGNAL
FIFO
SIN
DDS
COS
DECIMATION
FILTERS
I
Q
I
Mag
FD
Mag
FD
Q
FD
Rx SSI
INTERFACE
Q
rxnb_dem
ROUND
I
Q
24159-134

Analog Devices ADRV9002 Specifications

General

Brand	Analog Devices
Model	ADRV9002
Category	Transceiver
Language	English