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D950-CORE Datasheet(PDF) 11 Page - STMicroelectronics

Part # D950-CORE
Description  16-Bit Fixed Point Digital Signal Processor DSP Core
PDF  89 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

D950-CORE Datasheet(HTML) 11 Page - STMicroelectronics

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D950-Core
3
FUNCTIONAL OVERVIEW
The D950-CORE is composed of three main units.
•
Data Calculation Unit (DCU)
•
Address Calculation Unit (ACU)
•
Program Control Unit (PCU)
These units are organized in an HARVARD architecture around three bidirectional 16-bit
buses, two for data and one for instruction. Each of these buses is dedicated to an uni-
directional 16-bit address bus (XA/YA/IA).
An 8-bit general purpose parallel port (P0-P7) can be configured (input or output). A test
condition is attached to each bit to test external events. Each of these functional blocks are
discussed in detail in Section 4“BLOCK DESCRIPTION”.
Control of the chip is performed through interface pins related to interrupt, low-power mode,
reset and miscellaneous functions.
Clock input is provided on the CLKIN pin which is buffered to the output clocks.
Figure 3.1
Block Diagram
DATA
CALCULATION
UNIT
ADDRESS
CALCULATION
UNIT
PROGRAM
CONTROL
UNIT
TEST & EMULATION
PO/P7
CONTROL
11
8
14
6
16
16
16
16
3
16
16
XA-bus
YA-bus
ID-bus
IA-bus
4



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