D950-CORE datasheet(35/89 Pages) STMICROELECTRONICS

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D950-Core

1: Modulo addressing mode is selected for AY0. AY0 is updated through the Y-

memory space modulo logic.

MX1: Modulo addressing mode for AX1

0: No modulo addressing mode for AX1 (def.)

1: Modulo addressing mode is selected for AX1. AX1 is updated through the X-

memory space modulo logic.

MX0: Modulo addressing mode for AX0

0: No modulo addressing mode for AX0 (def.)

1: Modulo addressing mode is selected for AX0. AX0 is updated through the X-

memory space modulo logic.

RND: Rounding type for ALU operation

0: Convergent rounding (def.)

1: Two’s complement rounding

ES:

Extended Saturation

0: The saturation is active when a 32-bit overflow occurs (if SAT=1)

1: The saturation is active when a 40-bit overflow occurs (if SAT=1) (def.)

SAT:

Saturation

0: ALU is not in saturated mode (def.)

1: ALU is in saturated mode

Integer Product

0: Product is in fractional format (if signed * signed, one bit is shifted left before storing

the result into P register) (def.)

1: Product is in integer format (no shift and direct transfer into P register)

SR:

Right side operand type (only used for product calculation and division)

0: Right side operand is unsigned

1: Right side operand is signed (def.)

SL:

Left side multiplicand type (only used for product calculation)

0: Left side multiplicand is unsigned

1: Left side multiplicand is signed (def.)

LR:

Right side long data

0: Normal 16-bit data mode (def.)

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