AD6654BBCZ datasheet(41/88 Pages) AD

tên linh kiện	AD6654BBCZ

Giải thích chi tiết về linh kiện	14-Bit, 92.16 MSPS, 4-/6-Channel Wideband IF to Baseband Receiver

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AD6654

Rev. 0 | Page 41 of 88

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]

Data Source

000

Channel 0

001

Channel 1

010

Channel 2

011

Channel 3

1x0

Channel 4

1x1

Channel 5

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.

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