Stepper Stall Detect (SSD)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor
1159
•
‘Register Interface’ relates to
Section 36.4.1.3, Register Interface
.
•
‘BIS (blanking-integration sequence) Control Logic’ relates to
36.1.2
Features
The most important features of the SSD block are listed below:
•
Programmable Full Step States according to 2-coil stepper motors (4 states)
•
Programmable Integration Polarity
•
Integration Accumulator of 16 bits with programmable clock divider.
•
Programmable Down Counter (16 bit timer)
— 64 MHz bus clock: Finest resolution in time down to 125 ns, maximum length of blanking or
integration phase for this case is ~8.2 ms
— 64 MHz bus clock: Maximum length of blanking or integration phase is 1.05 s, resolution in
time reduced to 16
s for this case
•
Automatic sequence of blanking followed by integration (BIS) triggered by the user.
•
Full flexibility over blanking and integration phase of the BIS:
— Separate down counter initialization values and divider factors
— Separate interrupt flags and interrupt enable bits
— Separate coil drive enable bits
•
Polarity switching to cancel DC offset errors programmable. The down counter value for the
integration phase can be divided by 2, 4, or 8 to switch the polarity during the integration phase.
Additionally the offset cancellation can be switched off completely
•
Seamless changeover into or from SSD (stepper stall detect) mode: The coil control signals outside
of the BIS are fully programmable.
36.1.3
Modes of operation
This section describes the different modes of operation of the SSD block.
36.1.3.1
Disabled mode
In this mode the SSD block is disabled. None of the SM coils is driven nor one of the coils sensed. This is
the case if the RTZE bit in the CONTROL register is cleared.
36.1.3.2
Normal mode
In this mode the SSD block needs exclusive control over the SM coils. This must be ensured on at the
device level. Setting the RTZE bit in the CONTROL register is not sufficient since the SSD does not
provide a global port enable signal. Refer to
Section 36.4, Functional description
, for more details.
Содержание MPC5602S
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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...
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Страница 1258: ...Registers Under Protection MPC5606S Microcontroller Reference Manual Rev 7 1256 Freescale Semiconductor...
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Страница 1324: ...Register Map MPC5606S Microcontroller Reference Manual Rev 7 1322 Freescale Semiconductor...