Sensors

36

Freescale Semiconductor, Inc.

MMA16xxKW

4.2.1.8

Clear Command

The Clear command is supported in the following command formats:

• Standard Long Command

• Standard Short Command

• Enhanced Long Command as configured by the Format Control Command (Reference Section 4.2.1.11)

• Enhanced Short Command as configured by the Format Control Command (Reference Section 4.2.1.11)

When the device successfully decodes a Clear Command, and the address field matches either the assigned device address

Section 3.6 for the initialization sequence following a Clear Command. The data bits D[7:0] in the command are only used in the

CRC calculation. There is no response to the Clear Command.

4.2.1.9

DSI Command #8

DSI Command ‘1000’ is not implemented. The device ignores all command formats with a command ID of ‘1000’.

Table 32. Clear Command

Data

Address

Command

CRC

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

A[3]

A[2]

A[1]

A[0]

C[3]

C[2]

C[1]

C[0]

⎯

⎯

⎯

⎯

⎯

⎯

⎯

⎯

A[3]

A[2]

A[1]

A[0]

0111

0 to 8 bits

Table 33. Clear Command Bit Definitions

Bit Field

Definition

C[3:0]

Clear Command = ‘0111’.

When a Clear Command is successfully decoded and the address field matches either the assigned device address or the DSI Global

sequence following a Clear Command.

A[3:0]

DSI device address. This field contains the device address. This field must match the internal programmed address field or the Global

Device Address of ‘0000’. Otherwise, the command is ignored.

D[7:0]

Used for CRC calculation only