XC888LM datasheet(90/144 Pages) INFINEON

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XC886/888CLM

Functional Description

Data Sheet

V0.9, 2006-12

3.11

Multiplication/Division Unit

The Multiplication/Division Unit (MDU) provides fast 16-bit multiplication, 16-bit and

32-bit division as well as shift and normalize features. It has been integrated to support

the XC886/888 Core in real-time control applications, which require fast mathematical

computations.

Features

•

Fast signed/unsigned 16-bit multiplication

•

Fast signed/unsigned 32-bit divide by 16-bit and 16-bit divide by 16-bit operations

•

32-bit unsigned normalize operation

•

32-bit arithmetic/logical shift operations

Table 28 specifies the number of clock cycles used for calculation in various operations.

Table 28

MDU Operation Characteristics

Operation

Result

Remainder

No. of Clock Cycles

used for calculation

Signed 32-bit/16-bit

32-bit

16-bit

Signed 16-bit/16bit

16-bit

Signed 16-bit x 16-bit

32-bit

Unsigned 32-bit/16-bit

32-bit

16-bit

Unsigned 16-bit/16-bit

16-bit

Unsigned 16-bit x 16-bit

32-bit

32-bit normalize

No. of shifts + 1 (Max. 32)

32-bit shift L/R

No. of shifts + 1 (Max. 32)

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