AD6654BBC datasheet(71/88 Pages) AD

Teilenummer	AD6654BBC

Bauteilbeschribung	14-Bit, 92.16 MSPS, 4-/6-Channel Wideband IF to Baseband Receiver

PDF	88 Pages

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AD6654

Rev. 0 | Page 71 of 88

ACCESSING MULTIPLE AD6654 DEVICES

If multiple AD6654 devices are on a single board, the microport

pins for these devices can be shared. In this configuration, a

single programming device (DSP, FPGA, or microcontroller)

can program all AD6654 devices connected to it.

Each AD6654 has four CHIPID pins that can be connected in

16 different ways. During a write/read access, the internal

circuitry checks to see if the CHIPID bits in the chip I/O access

control register (Address 0x02) are the same as the logic levels

of the CHIPID pins (hardwired to the part). If the CHIPID bits

and the CHIPID pins have the same value, then a write/read

access is completed; otherwise, the access is ignored.

To program multiple devices using the same microport control

and data buses, the devices should have separate CHIPID pin

configurations. A write/read access can be made only on the

intended chip; all other chips would ignore the access.

AD6654BBC Datenblatt(PDF) 71 Page - Analog Devices