L99H01 datasheet(42/53 Pages) STMICROELECTRONICS

42 / 53 page

Functional description of the SPI

L99H01

42/53

DocID15567 Rev 6

The <SPI-frame-ID> (ROM address 03H) provides information about the register width (1, 2,

3 bytes) and the availability of ‘burst mode read’ option.

Comments:

•

BR: Burst mode read. Not supported

•

AR5: Address width reduction. Not supported

•

AR4: Address width reduction. Not supported

•

AR3: Address width reduction. Not supported

•

32 bits: 32 bits frame width. Not supported

•

24 bits: 24 bits frame width. Not supported

•

16 bits: 16 bits frame width, 8 bits command and 8 bits data

•

8 bits: 8 bits frame width. Not supported

Table 46. Address 2 <02(hex)>: product ID (MSB) - read only(1)

Addressable only through a read device Information command.

Bit

Name

PR_ID_15 PR_ID_14 PR_ID_13 PR_ID_12 PR_ID_11 PR_ID_10 PR_ID_9 PR_ID_8

Table 47. Address 3 <03(hex)>: SPI frame ID - read only(1)

Addressable only through a Read Device Information command.

Bit

321

Name

AR5

AR4

AR3

32 bits

24 bits

16 bits

8 bits

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