ADP1046AACPZ-R7 datasheet(40/88 Pages) AD

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40 / 88 page

ADP1046A

Data Sheet

Rev. 0 | Page 40 of 88

Invalid or Unsupported Command Code

If an invalid or unsupported command code is sent to the

I2C slave, the I2C slave considers this a data content fault

and responds as follows:

•

Issues a no acknowledge for the illegal/unsupported

command byte and data bytes

•

Flushes and ignores the received command and data

Reserved Bits

Accesses to reserved bits are not a fault. Writes to reserved bits

are ignored, and reads from reserved bits return undefined data.

Write to Read-Only Commands

If a host performs a write to a read-only command, the I2C slave

considers this a data content fault and responds as follows:

•

Issues a no acknowledge for all unexpected data bytes as

they are received

•

Flushes and ignores the received command and data

Note that this is the same error described in the Host Sends Too

Many Bytes section.

Read from Write-Only Commands

If a host performs a read from a write-only command, the I2C

slave considers this a data content fault and send all 1s (0xFF) as

long as the host continues to request data.

Note that this is the same error described in the Host Reads Too

Many Bytes section.

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