UPD61052 NEC, UPD61052 Datasheet - Page 46

• Manufacturer Part Number: UPD61052
• Description: MPEG2 Audio / Video Encoder
• Manufacturer: NEC

SDRAM write
<1> Interrupt mask
<2> Set destination address
<3> Set the number of the data to write by a 4 byte unit
<4> Set the transfer of host CPU → SDRAM
<5> Data write
<6> CINT interrupt (Interrupt pin)
<7> Confirm the interrupt factor
<8> Confirm that next data transfer prepare completed
<9> Release of SDRAM → host CPU
<10> Release of interrupt mask
<11> In the case of an interrupt to internal CPU, it is necessary
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Host CPU sets mask bit to interrupt mask register (2CH to 2FH) for the interrupt that needs a data transfer.
Host CPU sets the address of SDRAM to the destination address register (24H to 26H) of the
Host CPU sets the data number of the bytes by 4 bytes unit to the transfer data counter register (27H to 29H) of
the
Host CPU sets 02H to the transfer mode register (20H) of the
Host CPU writes data to the transfer data register (3FH) of the
or transfer data count register setting value.
When the number of the transfer data is less then 128 bytes, host CPU confirms that the interrupt register 0 (30H)
of the
Host CPU confirms that the interrupt register 0 (30H) of the
writing sane value of the interrupt register 0 (30H) to the interrupt register 0 (30H) of the
Return to <5> and next data write.
Host CPU clears a writing interrupt factor in 01H at the interrupt register 0 (30H) register of the
after setting 00H to the transfer mode register (20H) of the
It releases the limitation on interrupt which is set by <1>.
Host CPU sets a data bank number and the number of the bytes to the address that defined with the firmware.
It sets 01H to the 2AH address of the
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PD61051/61052.
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PD61051/61052 becomes 01H, and go to <9>.
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PD61051/61052 and it notifies an interrupt to internal CPU.
Data Sheet S15082EJ4V0DS
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PD61051/61052.
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PD61051/61052 becomes 02H or 01H and clears a
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µ
PD61051/61052.
PD61051/61052 at times with more few 128 bytes
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PD61051, 61052
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PD61051/61052.
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PD61051/61052.
PD61051/61052