D950-CORE View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

D950-CORE

16-Bit Fixed Point Digital Signal Processor (DSP) Core

STMicroelectronics 

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D950-Core

N: Normalized

0: ALU result is not normalized (def.)

1: ALU result is normalized (bits 31 to 39 are equal & opposed to bit 30)

EXT: Extension

0: The 8-bit extension is the sign of the 32-bit ALU result

1: The last ALU result overflows the 32-bit format

MOVF:Memorized overflow

0: Reset when tested by a conditional instruction (def.)

1: Set when the last ALU result overflows the 40-bit format

OVF: Overflow

0: An arithmetic overflows does not occur for the last 40-bit ALU result (def.)

1: An arithmetic overflow occurs for the last 40-bit ALU result

Z: Zero

0: ALU result is different from zero (def.)

1: ALU result is zero

C: Carry value generated out of bit 39 during the last ALU operation

S: Sign

0: ALU result is positive (def.)

1: ALU result is negative

Note:‘-’ for bit 13 indicates RESERVED (read: 0, write: don't care)

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