Data Sheet

AD7328

Rev. C | Page 23 of 36

Table 11. Power Mode Selection

PM1

PM0

Description

1

1

Full shutdown mode. In this mode, all internal circuitry on the AD7328 is powered down. Information in the control

register is retained when the AD7328 is in full shutdown mode.

1

0

updated. All internal circuitry is powered down in autoshutdown.

0

1

Autostandby mode. In this mode, all internal circuitry is powered down, excluding the internal reference. The AD7328

0

0

Normal mode. All internal circuitry is powered up at all times.

Table 12. Sequencer Selection

SEQ1

SEQ2

Description

0

0

The channel sequencer is not used. The analog channel, selected by programming the ADD2 to ADD0 bits in the control

register, selects the next channel for conversion.

0

1

Uses the sequence of channels that were previously programmed in the sequence register for conversion. The AD7328

starts converting on the lowest channel in the sequence. The channels are converted in ascending order. If uninterrupted,

the AD7328 keeps converting the sequence. The range for each channel defaults to the range previously written into the

corresponding range register.

1

0

This configuration is used in conjunction with the channel address bits in the control register. This allows continuous conversions

on a consecutive sequence of channels, from Channel 0 through a final channel selected by the channel address bits in the

control register. The range for each channel defaults to the range previously written into the corresponding range register.

1

1

The channel sequencer is not used. The analog channel, selected by programming the ADD2 bit to ADD0 bit in the control

register, selects the next channel for conversion.