Stepper Stall Detect (SSD)
MPC5606S Microcontroller Reference Manual, Rev. 7
1174
Freescale Semiconductor
Figure 36-10. Offset Cancellation Polarity Distribution
If the shift process shifts out LS bits from the ITGCNTLD register (non-integer divide) the number shifted
out creates an additional polarity flip which lasts the appropriate number of DCNT update periods.
36.4.2
Stepper Stall Detection Measurement
This part of the functional description deals with the main intended use case of the SSD block, this is the
detection of the scale end boundaries of the gauge pointer moved by the SM which, in turn, is driven by
the SSD block. For details of the related sub blocks refer to
Section 36.4.1, Main building blocks of the
36.4.2.1
Overview of the SSD Measurement
The generic flow of SSD measurement is given in
below, the numbers denoted at each step
belong to the detailed explanations given in
Section 36.4.2.2, Details of the SSD Measurement
.
The two phases of the BIS are executed in sequence:
1. Blanking phase: Since the non-driven coil used for measurement was driven in the previous step
switching transients are induced when changing from the driven into the non-driven state.
Therefore both pins of the non-driven coil are connected to one of the analog supply voltages
VDDM or VSSM (depending from the RCIR bit) to allow recirculation of these transient currents.
2. Integration phase: This is the actual measurement where the ITGACC register is changed
according to the results of the
-modulator of the analog block.
Time of Integration Phase
OFFCNC = 2’b00
OFFCNC = 2’b01
OFFCNC = 2’b10
OFFCNC = 2’b11
Initial polarity setting
Reverted polarity setting
Sample Down Counter for ITGCNTLD = 0x1FFF
0x1FFF
0x0x000
0x1BFF
0x17FF
0x13FF
0x0FFF
0x0BFF
0x07FF
0x03FF
Содержание MPC5602S
Страница 76: ...Overview MPC5606S Microcontroller Reference Manual Rev 7 74 Freescale Semiconductor...
Страница 82: ...Memory Map MPC5606S Microcontroller Reference Manual Rev 7 80 Freescale Semiconductor...
Страница 112: ...Signal Description MPC5606S Microcontroller Reference Manual Rev 7 110 Freescale Semiconductor...
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Страница 955: ...Mode Entry Module MC_ME MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 953...
Страница 956: ...Mode Entry Module MC_ME MPC5606S Microcontroller Reference Manual Rev 7 954 Freescale Semiconductor...
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Страница 1186: ...Stepper Stall Detect SSD MPC5606S Microcontroller Reference Manual Rev 7 1184 Freescale Semiconductor...
Страница 1213: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1211...
Страница 1214: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 1212 Freescale Semiconductor...
Страница 1238: ...Voltage Regulators and Power Supplies MPC5606S Microcontroller Reference Manual Rev 7 1236 Freescale Semiconductor...
Страница 1252: ...Wakeup Unit WKPU MPC5606S Microcontroller Reference Manual Rev 7 1250 Freescale Semiconductor...
Страница 1258: ...Registers Under Protection MPC5606S Microcontroller Reference Manual Rev 7 1256 Freescale Semiconductor...
Страница 1323: ...Register Map MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1321...
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