NXP Semiconductors MPC5606S - Page 1181

Stepper Stall Detect (SSD)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 1179
Figure 36-13. Current flow for Blanking (STEP = 0, BLNDCL = 1, RCIR = 0)
In Figure 36-14 below the recirculation at the beginning of the next BIS for STEP = 1 with changed setting
of the RCIR bit is shown. The sine coil is driven again in P  M direction and the cosine coil is
recirculated against VSSM.
Figure 36-14. Current flow for Blanking (STEP = 1, BLNDCL = 1, RCIR = 1)
In Figure 36-15 below it is shown that for the next step (STEP = 2) the cosine coil is driven in reverse
direction with respect to STEP = 0 (M  P direction). Because it is the integration phase of the BIS, the
sine coil is isolated from the analog supply voltages. Instead, it is connected to the -modulator (not
shown).
VDDM
COSP COSM
T1
T2
T3
T4
VSSM
VDDM
SINP SINM
T5
T6
T7
T8
VSSM
VDDM
COSP COSM
T1
T2
T3
T4
VSSM
VDDM
SINP SINM
T5
T6
T7
T8
VSSM