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D950-CORE Datasheet(PDF) 19 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) 19 Page - STMicroelectronics

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D950-Core
Figure 4.3
D950-Core Bit Manipulation Unit
This 8-bit mask is extended to a 16-bit mask in three ways:
•
8-bit value on MSBs, 0x00 on LSBs,
•
0x00 on MSBs, 8-bit value on LSBs,
•
8-bit value on MSBs, 8-bit value on LSBs. (In this case, the mask value is the
same on MSB and LSB.)
For registers with a length less than 16-bit (AIE, BSC, PSC), the signed value data is sign-
extended to a 16-bit signed value data before being tested.
Figure 4.4
Extension of an 8-bit Mask to 16-bit Mask
Figure 4.5
Sign Extension to a 16-bit Signed Value
15
8
7
0
MASK
0
0MASK
MASK
MASK
16
8
16
INTERNAL REGISTER
RAM
EXTENSION
TST
BIT MANIPULATION
UNIT
MASK
Processed Data
VR02017D
VR 020 17P
S
0
15
5



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