UPD77115 View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD77115

16-BIT FIXED-POINT DIGITAL SIGNAL PROCESSOR

NEC => Renesas Technology 

µPD77115, 77115A

7.2 Instruction Set and Operation

An operation is written in the operation field for each instruction in accordance with the operation representation

format of that instruction. If two or more parameters can be written, select one of them.

(a) Representation formats and selectable registers

The following table shows the representation formats and selectable registers.

Representation Format

r0, r0’, r0”

rI, rI’

rh, rh’

re

reh

dp

dn

dm

dpx

dpy

dpx_mod

dpy_mod

dp_imm

*xxx

Selectable Register

R0 to R7

R0L to R7L

R0H to R7H

R0E to R7E

R0EH to R7EH

DP0 to DP7

DN0 to DN7

DMX, DMY

DP0 to DP3

DP4 to DP7

DPn, DPn++, DPn− −, DPn##, DPn%%, !DPn## (n = 0 to 3)

DPn, DPn++, DPn− −, DPn##, DPn%%, !DPn## (n = 4 to 7)

DPn##imm (n = 0 to 7)

Contents of memory with address xxx

<Example> If the contents of the DP0 register are 1000, *DP0 indicates the contents of

address 1000 of the memory.

26

Data Sheet U14867EJ5V0DS

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