STE2007 datasheet(17/62 Pages) STMICROELECTRONICS

17 / 62 page

STE2007

Interface

17/62

Figure 6.

3-lines SPI Data transfer break condition

4.1.1.2 Data/command transfer pause

It is possible while transferring Frame Memory Data, Commands or Command Parameters

to insert a pause in the data transmission (!CS Line HIGH after 8 Bits Received). When !CS

is forced high after a whole byte received, the received byte is processed. Then STE2007 is

forced in a wait state ready to restart processing incoming data from the point where the

communication has been paused

If a new command identifier is transferred after a pause condition the previous

communication session is definitively closed.

Four are the possible conditions:

–

Command-Pause-Command

–

Command-Pause-Parameter

–

Parameter-Pause-Command

–

Parameter-Pause-Parameter

Figure 7.

3-lines SPI data transfer pause

LR0204

!CS

SDA

SCL

COMMAND/PARAMETER

Break

D/!C

LR0203

!CS

SDA

SCL

COMMAND/PARAMETER

Pause

D/!C

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