MB86330 Datasheet, PDF (23/46 Pages) Fujitsu Component Limited. – 16-bit Fixed-point DSP

MB86330
s ADDRESSING
• Types of addressing
When reading/writing data from/to the memory, you can use a direct addressing method for specifying a
16-bit length address space with an immediate value, and an indirect addressing method for referencing that
space by an address register. The DSP supports eight address registers, two update registers, the base
pointer, the circular register, and the modulo register for addressing.
• Addressing classification
Three indirect addressing means (AD0 to AD2) by address registers can be used to transfer a register value
to a memory, data from a memory to a register, and data between memories. The available addressing means
is determined depending on the type of a register for data transfer, double transfer and transfer accompanied
by an operation. All addressing is performed in units of words.
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