BQ76PL455APFCT datasheet(49/125 Pages) TI1

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bq76PL455A

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SLUSCL0A – SEPTEMBER 2016 – REVISED OCTOBER 2016

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7.5.1.2 Device Address/Group ID Byte

The Device Address or Group ID Byte identifies the device or group of devices targeted by the command. Only

those devices that contain a matching value in their Device Address Register (register address 10) or Group ID

determine how to interpret this byte.

NOTE

Device Address/Group ID Byte is not present in a Broadcast command frame.

Device Address or Group ID

Identifier of device(s) receiving communication (always one byte)

7.5.1.3 Register Address Byte(s)

not transmitted and is assumed to be 0.

7.5.1.4 Data Bytes

The basis of data byte interpretation is from the type of command frame being sent and the target register

specified in the command frame.

For command frames targeted at the Command Register (address 2), the data contains the command, highest

responding device address and, optionally, new data for the Command Channel Select Register (address 3–6)

and Averaging Register (address 7).

For command frames targeted at other registers:

•

If REQ_TYPE is Write without Response, the data bytes contain the values to be written to the registers

•

If REQ_TYPE is Write with Response, the data bytes contain the values returned from the registers

Data[0]

…

Data[n]

Data Bytes (the number of bytes should match the DATA_SIZE field in the Frame

Initialization byte)

NOTE

Transactions with seven data bytes are not possible.

7.5.1.5 CRC Bytes

CRC (MSB)

16-bit CRC (CRC-16-IBM—See CRC Description)

CRC(LSB)

BQ76PL455APFCT Datasheet(PDF) 49 Page - Texas Instruments