AD6654/PCB Analog Devices Inc, AD6654/PCB Datasheet - Page 41

• Manufacturer Part Number: AD6654/PCB
• Description: BOARD EVALUATION FOR AD6654
• Manufacturer: Analog Devices Inc

Specifications of AD6654/PCB

• Module/board Type: Evaluation Board
• For Use With/related Products: AD6554
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

INTERMEDIATE DATA ROUTER
Following the FIR-HB cascade filters is the intermediate data
router. This data router consists of muxes that allow the I and Q
data from any channel front end (input port + NCO + CIC +
FIRHB) to be processed by any channel back end (MRCF +
DRCF + CRCF). The choice of channel front end is made by
programming a 3-bit MRCF data select word in the MRCF
control register. The valid values for this word and their
corresponding settings are listed in Table 19.
Table 19. Data Router Select Settings
MRCF Data Select[2:0]
000
001
010
011
1x0
1x1
Data Source
Channel 0
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Rev. 0 | Page 41 of 88
Allowing different channel back ends to select different channel
front ends is useful in the polyphase implementation of filters.
When multiple AD6654 channels are used to process a single
carrier, a single-channel front end feeds more than one channel
back end. After processing through the channel back ends (RCF
filters), the data is interleaved back from all the polyphased
channels.
AD6654