ADSP2115KP80

Manufacturer Part NumberADSP2115KP80
DescriptionPLCC-68
ManufacturerAnalog Devices
ADSP2115KP80 datasheet
 


Specifications of ADSP2115KP80

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ADSP-21xx
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
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.
MF=MX0 * MY1 ( RND), MX0=DM(I2,M1);
MR=MX0 * MF ( RND), AY0=PM(I6,M5);
DO adapt UNTIL CE;
AR=MR1+AY0, MX0=DM(I2,M1), AY0=PM(I6,M7);
adapt:
PM(I6,M6)= A R, MR=MX0 * MF ( RND);
MODIFY(I2,M3);
MODIFY(I6,M7);
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
{MF=error * b eta}
{Point to oldest data}
{Point to start of data}
–16–
REV. B