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D950-CORE bảng dữ liệu(PDF) 20 Page - STMicroelectronics

tên linh kiện D950-CORE
Giải thích chi tiết về linh kiện  16-Bit Fixed Point Digital Signal Processor DSP Core
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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D950-CORE bảng dữ liệu(HTML) 20 Page - STMicroelectronics

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D950-Core
4.2
Address Calculation Unit (ACU)
4.2.1 Introduction
The D950-Core ACU includes two identical address generators (one for each data memory
space), each containing:
•
2 x 16-bit address registers
•
4 x 16-bit index registers
•
Adder for address register update
•
2 x 16-bit base and maximum address registers for modulo addressing. There
is dedicated logic for address comparison and calculation.
Figure 4.6
D950-Core Address Calculation Unit
In addition to these two address generators, the D950-Core ACU includes:
•
16-bit Stack Pointer (SPX) register for the X-memory space mapped stack
•
16-bit Stack Pointer (SPY) register for the Y-memory space mapped stack
•
6 bits of STA register for addressing modes
VR02017E
STA
6
AY0
AY1
BY
MY
MODULUS
LOGIC
16-bit ADDER
IY0
IY1
IY2
IY3
6
16
16
16
16
AX0
AX1
BX
MX
MODULUS
LOGIC
16-bit ADDER
IX0
IX1
IX2
IX3
SPX
XD
XA
YD
YA
SPY
5



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