L99ASC03 datasheet(49/73 Pages) STMICROELECTRONICS

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L99ASC03

ST-SPI Protocol

The data contained in the Device Information address range is predefined by the ST-SPI

Standard v4.0. The data is read only and represent device specific data like Device ID, SPI

settings and Watchdog information. For details, please refer to Section 4.3.1

Advanced operation codes

Two Advanced Operation Codes can be used to set all control registers to the default value

and to clear all status registers.

A 'set all control registers to default' command is performed when an OpCode '11' at

address b'111111 is performed.

The Device Register 1 and DSFT_DIS bit are not cleared with this command and hold their

content.

A 'clear all status registers' command is performed when an OpCode '10' at address

b'111111 is performed.

Table 32. Device application access

Operating code

OC1

OC0

Table 33. Device information read access

Operating code

OC1

OC0

Table 34. Address range

Address

Data

Type

Address

Data

Type

3FH

Advanced operation code

3FH

Advanced operation code

3EH

R/W or C

3EH

...

11H

10H

03H

02H

01H

00H

R/W or C

00H

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