ADSP-2104 데이터 시트보기 (PDF) - Analog Devices

부품명

상세내역

제조사

ADSP-2104

Low Cost DSP Microcomputers

Analog Devices 

ADSP-2104/ADSP-2109

Program Flow Instructions

DO <addr> [UNTIL term] ;

[IF cond] JUMP (Ix) ;

[IF cond] JUMP <addr>;

[IF cond] CALL (Ix) ;

[IF cond] CALL <addr>;

IF [NOT ] FLAG_IN JUMP <addr>;

IF [NOT ] FLAG_IN CALL <addr>;

[IF cond] SET|RESET|TOGGLE FLAG_OUT [, ...] ;

[IF cond] RTS ;

[IF cond] RTI ;

IDLE [(n)] ;

Miscellaneous Instructions

NOP ;

MODIFY (Ix , My);

[PUSH STS] [, POP CNTR] [, POP PC] [, POP LOOP] ;

ENA|DIS SEC_REG [, ...] ;

BIT_REV

AV_LATCH

AR_SAT

M_MODE

TIMER

G_MODE

Do Until Loop

Jump

Call Subroutine

Jump/Call on Flag In Pin

Modify Flag Out Pin

Return from Subroutine

Return from Interrupt Service Routine

Idle

No Operation

Modify Address Register

Stack Control

Mode Control

Notation Conventions

Ix

Index registers for indirect addressing

My

Modify registers for indirect addressing

<data>

Immediate data value

<addr>

Immediate address value

<exp>

Exponent (shift value) in shift immediate instructions (8-bit signed number)

<ALU>

Any ALU instruction (except divide)

<MAC>

Any multiply-accumulate instruction

<SHIFT>

Any shift instruction (except shift immediate)

cond

Condition code for conditional instruction

term

Termination code for DO UNTIL loop

dreg

Data register (of ALU, MAC, or Shifter)

reg

Any register (including dregs)

;

A semicolon terminates the instruction

,

Commas separate multiple operations of a single instruction

[]

Optional part of instruction

[, ...]

Optional, multiple operations of an instruction

option1 | option2 List of options; choose one.

Assembly Code Example

The following example is a code fragment that performs the filter tap update for an adaptive filter based on a least-mean-squared

algorithm. Notice that the computations in the instructions are written like algebraic equations.

adapt:

MF=MX0* MY1 ( RND), MX0=DM(I2,M1);

MR=MX0* MF ( RND), AY0=PM(I6,M5);

{MF=error * b eta}

DO adapt UNTIL CE;

AR=MR1+AY0, MX0=DM(I2,M1), AY0=PM(I6,M7);

PM(I6,M6)= A R, MR=MX0* MF ( RND);

MODIFY(I2,M3);

MODIFY(I6,M7);

{Point to oldest data}

{Point to start of data}

REV. 0

–11–

Share Link: