PXD20RM Datasheet, PDF (1458/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Start of Measurement¹
Initialize SSD²
Start Blanking³
End of
Blanking?⁴ _No
Yes
Start Integration⁵
BIS executed
automatically
InEtengdraotfion?⁶ _No
Yes
Stop Integration⁷
Read Integration Result⁸
End of Measurement⁹
Figure 42-12. Generic SSD Flow
42.4.2.2 Details of the SSD Measurement
This section describes in detail the steps introduced in Figure 42-12. Note that it describes only the
measurement process. The decision whether the stall position has been reached or another SM step is
required must be made by the controlling CPU depending from the measurement result. All control bits
are assumed to have their (inactive) reset values prior to entering the SSD measurement flow. The
following paragraphs relate to one complete BIS including the (optional) blanking phase followed by the
integration phase:
1. Start of Measurement
42-20
PXD20 Microcontroller Reference Manual, Rev. 1