Fujitsu MB90460 Series, Hardware Manual, Page: 380 / 739

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CHAPTER 15 MULTI-PULSE GENERATOR
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16-bit Timer
The 16-bit timer is used to act as an interval timer for motor speed checking and abnormal detection timer
when control DC sensorless motor. The detail is shown in Figure 15.2-3.
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Comparison Circuit
The Comparison Circuit is used to compare the RDA2 to RDA0 bits of the Output Data Register (OPDR:
RDA2 to RDA0) with the CPD2 to CPD0 bits of the Input Control Register (IPCR: CPD2 to CPD0) for
motor direction change. A compare match interrupt is generated when a match is happened.
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Data Write Control Unit
The Data Write Control Unit is used to generate the write signal (WTO) for transferring data from the
Output Data Buffer Register (OPDBR) to Output Data Register (OPDR). The detail is shown in Figure
15.2-4.
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Decoder
The Decoder is used to decode the bit15 to bit12 of Output Data Register (OPDR: BNKF, RDA2 to RDA0)
to select which Output Data Buffer Register (OPDBRB to OPDBR0) is loaded into Output Data Register.
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DTTI1 Control
The DTTI1 Control is used to stop the Multi-pulse Generator output in case of emergency, that is triggered
by level "0" of DTTI1 input.
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Noise Filter
The Noise Filter is used to filter out the noise of the input signal in which there are 4 kind of sampling
clock for selection.
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Output Control Unit
The Output Control Unit is used to enable/disable PPG signal to the Multi-pulse Generator Outputs (OPT5
to OPT0).
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Position Detect Circuit
The Position Detect Circuit is used to detect the edge/level of the position input (SNI2 to SNI0). The detail
is shown in Figure 15.2-5.
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SYN Circuit
The SYN Circuit is used to synchronize the OPT5 to OPT0 outputs with the PPG signal.
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Noise Cancellation Control Register (NCCR)
The Noise Cancellation Control Register (NCCR) is used to select one of four sampling clock for the Noise
Filter.