UPD77015GC NEC, UPD77015GC Datasheet - Page 19
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UPD77015GC
Manufacturer Part Number
UPD77015GC
Description
16 bits/ Fixed-point Digital Signal Processor
Manufacturer
NEC
Datasheet
1.UPD77015GC.pdf
(60 pages)
- Current page: 19 of 60
- Download datasheet (425Kb)
2.3.6 CJC: Condition Judge Circuit
when the result is true, and not executed when the result is false.
2.4 Memory
separated.
Each addressing unit consists of four data pointers, four index registers, a modulo register and addressing ALU.
to DP7. After memory access, DPn (with the same subscript), can be modified by DNn value. Modulo operation
is performed with DMX for DP0 to DP3, with DMY for DP4 to DP7.
16 bits each). It adopts Harvard-type architecture, with instruction memory area and data memory areas
CJC judges whether condition is true or false with 40 bits input data. A conditional instruction is executed
The PD77017 has one instruction memory area (64K words 32 bits) and two data memory areas (64K words
X memory area addresses are specified by DP0 to DP3, and Y memory area addresses are specified by DP4
The PD77017 has 2 sets of data addressing units, which are dedicated for addressing data memory area.
PD77015, 77017, 77018
19
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