AD6654BBCZ datasheet(59/88 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

PDF	88 Pages

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AD6654

Rev. 0 | Page 59 of 88

count reaches 1, the new frequency and/or phase offset is

loaded into the NCO.

Note: When using SPI or SPORT for programming these

registers, the last step in the above procedure needs to be

repeated, that is, the soft synchronization register needs to be

written twice.

Hop with Pin Sync

Four sync pins (SYNC0, SYNC1, SYNC2, and SYNC3) provide

very accurate synchronization among channels. Each channel

can be programmed to look at any of the four sync pins.

To control the hop of channel NCO frequencies:

Write the NCO frequency register(s) or phase offset

Write the NCO frequency hold-off counter(s) to the

appropriate value (greater than 0 and less than 216).

Program the channel NCO control registers to monitor

the appropriate SYNC pins.

Write the hop synchronization enable bit and SYNC pin

enable bits high in the pin synchronization configuration

hold-off counter. When the count reaches 1, the new

frequency and/or phase offset is loaded into the NCO.

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