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A.4 ADDRESSING MODESThe addressing modes are grouped into three categories: register direct, address registerindirect, and special. These addressing modes are summarized in Table A-2. Alladdress calculations are performed in the address ALU to minimize execution time andloop overhead. Addressing modes, which specify whether the operands are in registers,in memory, or in the instruction itself (such as immediate data), provide the specificaddress of the operands.The register direct addressing mode can be subclassified according to the specific registeraddressed. The data registers inch,Jde X1, XO, V1, VO, X, V, A2, A1, AO, B2, B1, BO,A, and B. The control registers include SR, OMR, SP, SSH, SSL, LA, LC, CCR, and MR.Address register indirect modes use an address register Rn (RO-R7) to point to locationsin X, V, and P memory. The contents of the Rn address register (Rn) is the effectiveaddress (ea) of the specified operand, except in the "indexed by offset" mode where theeffective address (ea) is (Rn+Nn). Address register indirect modes use an address modifierregister Mn to specify the type of arithmetic to be used to update the address registerRn. If an addressing mode specifies an address offset register Nn, the given address offsetregister is used to update the corresponding address register Rn. The Rn addressregister may only use the corresponding address offset register Nn and the correspondingaddress modifier register Mn. For example, the address register RO may only use theNO address offset register and the MO address modifier register during actual addresscomputation and address register update operations. This unique implementation allowsthe user to easily address a wide variety of DSP-oriented data structures. All addressregister indirect modes use at least one set of address registers (Rn, Nn, and Mn), andthe XV memory reference uses two sets of address registers, one for the X memoryspace and one for the V memory space.The special addressing modes include immediate and absolute addressing modes aswell as implied references to the program counter (PC), the system stack (SSH or SSL),and program (P) memory.-Addressing modes may also be categorized by the ways in which they can be used.Table A-2 and Table A-3 show the various categories to which each addressing modebelongs. These addressing mode categories may be combined so that additional, morerestrictive classifications may be defined. For example, the instruction descriptions mayuse a memory alterable classification, which refers to addressing modes that are bothmemory addressing modes and alterable addressing modes. Thus, memory alterableaddressing modes use address register indirect and absolute addressing modes.
Table A-2 DSP56K Addressing ModesAddressing ModeUses MnOperand ReferenceModifier S C D A P X V L XVRegister DirectData or Control Register No X X XAddress Register Rn No XAddress Modifier Register No XMnAddress Offset Register Nn No XAddress Register IndirectNo Update No X X X X XPostincrement by 1 Yes X X X X XPostdecrement by 1 Yes X X X X XPostincrement by Offset Nn Yes X X X X XPostdecrement by Offset Nn Yes X X X XIndexed by Offset Nn Yes X X X XPredecrement by 1 Yes X X X XSpecialImmediate Data No XAbsolute Address No X X X XImmediate Short Data No XShort Jump Address No XAbsolute Short Address No X X X XI/O Short Address No X XImplicit No X X XNOTE:-S = System Stack ReferenceX = X Memory ReferenceC = Program Controller Register Reference Y = Y Memory ReferenceD = Data ALU Register Reference L = L Memory ReferenceA = Address ALU Register Reference XY = XV Memory ReferenceP = Program Memory Reference
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DSP56K FAMILY INTRODUCTIONDSP56K CE
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Motorola reserves the right to make
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Table of Contents (Continued)Paragr
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ParagraphNumberTable of Contents (C
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FigureNumberList of Figures (Contin
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List of Tables (Continued)TablePage
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1.1 INTRODUCTIONThe DSP56K family i
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Fewer componentsStable, determinist
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Digital FilteringFinite Impulse Res
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architecture matches the shape of t
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• DSP56001 Compatibility - All me
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SECTION 2DSP56K CENTRAL ARCHITECTUR
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--I«a:w:ca.ffi~a. a.24-Bit 56KModu
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-rectly addressable registers: the
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3.1 DATA ARITHMETIC LOGIC UNITThis
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3.2.1 Data ALU Input Registers (X1,
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"""""" 24 BITS;:~:>~~::~~~:~:~:~:::
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3.2.4 Accumulator ShifterThe accumu
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Table 3-1 Limited Data ValuesDestin
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_--- N BITS ---_TWOS COMPLEMENT INT
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CASE I: IF AO < $800000 (1/2), THEN
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one instruction cycle. The ANDI ins
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3.5 DATA ALU PROGRAMMING MODELThe D
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4.1 ADDRESS GENERATION UNIT AND ADD
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!---LOWADDRESS ALU -----I~.j.I.....
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•••••••• _ ........
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4.4.1 Address Register Indirect Mod
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EXAMPLE: MOVE BO,V: (R1)+BEFORE EXE
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EXAMPLE: MOVE X1,X: (R2)+N2BEFORE E
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EXAMPLE: MOVE Y1,X: (RS+NS)BEFORE E
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Table 4-2 Address Modifier SummaryM
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ADDRESS -f-_POINTERUPPER BOUNDARYiM
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EXAMPLE: MOVE XO,X:(R2)+NLET:M2 00
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oundary gives a 16-bit binary numbe
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4.4.2.4 Address-Modifier-Type Encod
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SECTION 5PROGRAM CONTROL UNIT-
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X MEMORYRAM/ROMIII E:XPAf'JSIC)N LI
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interruptible since they are fetche
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PROGRAM CONTROL UNIT-23 1615 023 16
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The GGR is a special purpose contro
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If S 1 =0 and SO=O (no scaling)then
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-23 876543210I * 1* JSO I * I Mel y
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5.4.5.1 Stack Pointer (Bits 0-3)The
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-DATA ARITHMETIC LOGIC UNITINPUT RE
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6.1 INSTRUCTION SET INTRODUCTIONThe
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shown in Figure 6-2. Most instructi
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23 87 0L...-I ___-'-I_---'I BUS~ LS
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The MR and CCR may be accessed indi
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6.3.4 Operand ReferencesThe DSP sep
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Some address register indirect mode
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EXAMPLE A: IMMEDIATE INTO 24-BIT RE
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EXAMPLE A: IMMEDIATE SHORT INTO AO,
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EXAMPLE A: MOVE P: $3200,XOBEFORE E
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Table 6-1 Addressing Modes SummaryA
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6.4.2 LogicallnstructlonsThe logica
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START OF LOOP1)SP+ 1 • SP; LA. SS
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OPCODE/OPERANDSPARALLEL MOVE EXAMPL
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SECTION 7PROCESSING STATES-
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Each instruction requires a minimum
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second instruction of the downloade
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The DO instruction is another instr
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SP and SSH/SSL register manipulatio
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7.3.1 Interrupt TypesThe DSP56K rel
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Table 7-2 Status Register Interrupt
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7.3.3 Interrupt SourcesInterrupts c
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interrupts makes it very useful for
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MAINPROGRAMFETCHESLONG INTERRUPTSER
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7.3.3.3 Other Interrupt SourcesOthe
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7.3.4 Interrupt ArbitrationInterrup
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7.3.7 Interrupt Instruction Executi
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MAINPROGRAMMEMORYINTERRUPT SYNCHRON
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MAINPROGRAMFETCHESINTERRUPTSYNCHRON
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MAINPROGRAMFAST INTERRUPTVECTORLONG
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MAINPROGRAMFETCHESNTERRUPTSYN8HRCNZ
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7.5 WAIT PROCESSING STATEThe WAIT i
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The stop processing state halts all
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the first instruction fetch). If th
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RESET -----------------------------
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16 - BIT INTERNALADDRESS BUSESX ADD
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8.2.2.1 Address (AO-A15)These three
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SECTION 9PLL CLOCK OSCILLATOR-
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X MEMORYRAM/ROMEXPANSION24-Bit56KMo
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23 22 21 20 19 18 17 16 15 14 13 12
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cleared. To enable rapid recovery w
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-CLVCCVCC for the CKOUT output. The
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4. For all input frequencies which
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While the PLL is regaining lock, th
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10.1 ON-CHIP EMULATION INTRODUCTION
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10.2.2 Debug Serial Clock/Chip Stat
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76543210I R/W I GO I EX I RS41 RS31
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Page 201 and 202: 10.3.4.4 Software Debug Occurrence
Page 203 and 204: 10.4.4 Memory High Address Comparat
Page 205 and 206: 10.6.1 External Debug Request Durin
Page 207 and 208: PABCIRCULARBUFFERPOINTERDSCKDSOFigu
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Page 211 and 212: k. ACKI. ClKm. Send command READ FI
Page 213 and 214: 19. ACK20. Send command READ GDB RE
Page 215 and 216: 10.11.6.1 Case 1: Return To The Pre
Page 217: SECTION 11ADDITIONAL SUPPORTDr. BuB
Page 220 and 221: The following is a partial list of
Page 222 and 223: • In-line assembler language code
Page 224 and 225: I Document 10 I Version Synopsis I
Page 228 and 229: I Document ID I Version Synopsis I
Page 232 and 233: 11.5 MOTOROLA DSP NEWSThe Motorola
Page 234 and 235: DIGITAL SIGNAL PROCESSINGAlan V. Op
Page 236 and 237: C Programming Language:Controls:. C
Page 238 and 239: Image Processing:DIGITAL IMAGE PROC
Page 240 and 241: LINEAR PREDICTION OF SPEECHJ. D. Ma
Page 243 and 244: A.1 APPENDIX A INTRODUCTIONThis app
Page 245 and 246: XnYnTable A-1 Instruction Descripti
Page 247 and 248: Table A-1 Instruction Description N
Page 249: Table A-1 Instruction Description N
Page 253 and 254: The address register indirect addre
Page 255 and 256: A.SCONDITION CODE COMPUTATION15 14
Page 257 and 258: S1 SO Scaling Mode Signed Integer P
Page 259 and 260: Table A-5 Condition Code Computatio
Page 261 and 262: A.7 INSTRUCTION DESCRIPTIONSThe fol
Page 263 and 264: ABSAbsolute ValueABSInstruction For
Page 265 and 266: ADC Add Long with Carry ADCresult.
Page 267 and 268: ADD Add ADDCondition Codes:15 14 13
Page 269 and 270: ADDL Shift Left and Add Accumulator
Page 271 and 272: ADDR Shift Right and Add Accumulato
Page 273 and 274: ANDLogical ANDANDInstruction Format
Page 275 and 276: ANDIAND Immediate with Control Regi
Page 277 and 278: ASL Arithmetic Shift Accumulator Le
Page 279 and 280: ASR Arithmetic Shift Accumulator Ri
Page 281 and 282: BCHG Bit Test and Change BCHGExplan
Page 283 and 284: BCHGBit Test and ChangeBCHGInstruct
Page 285 and 286: BCHGBit Test and ChangeBCHGInstruct
Page 287 and 288: BCHG Bit Test and Change BCHGNotes:
Page 289 and 290: BCLR Bit Test and Clear BCLRExplana
Page 291 and 292: BClRBit Test and ClearBClRInstructi
Page 293 and 294: BClRBit Test and ClearBClRInstructi
Page 295 and 296: BClR Bit Test and Clear BClRNotes:
Page 297 and 298: BSET Bit Test and Set BSETExplanati
Page 299 and 300: BSETBit Test and SetBSETInstruction
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BSETBit Test and SetBSETInstruction
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BSET Bit Test and Set BSETNotes: If
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BTSTBit TestBTSTCondition Codes:115
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8TSTBit Test8TSTInstruction Format:
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8TSTBit Test8TSTInstruction Format:
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CLRClear AccumulatorCLRInstruction
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CMP Compare CMPCondition Codes:15 1
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CMPM Compare Magnitude CMPMConditio
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DEBUGEnter Debug ModeDEBUGOpcode:23
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DEBUGcc Enter Debug Mode Conditiona
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DEC Decrement by One DECInstruction
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DIV Divide Interation DIVThe DIV in
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DIV Divide Interation DIVNote that
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DIVInstruction Format:DIV S,DDivide
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DO Start Hardware Loop DOexecuted 6
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DOStart Hardware LoopDOAt LAOther R
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DOStart Hardware LoopDOInstruction
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DOStart Hardware LoopDOInstruction
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DO Start Hardware Loop DONotes: If
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ENDDO End Current DO Loop ENDDOExpl
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EOR Logical Exclusive OR EORInstruc
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ILLEGALIllegal Instruction Interrup
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INC Increment by One INCInstruction
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Jcc Jump Conditionally JccRestricti
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JccJump ConditionallyJccEffectiveAd
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JCLR Jump If Bit Clear JCLRRestrict
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JCLRJump If Bit ClearJCLRInstructio
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JCLR Jump If Bit Clear JCLRInstruct
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JMPJumpJMPInstruction Fields:xxx=12
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JSccJump to Subroutine Conditionall
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JScc Jump to Subroutine Conditional
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JSCLR Jump to Subroutine if Bit Cle
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JSCLRJump to Subroutine If Bit Clea
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JSCLRJump to Subroutine If Bit Clea
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JSCLR Jump to Subroutine If Bit Cle
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JSET Jump if Bit Set JSETRestrictio
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JSETJump if Bit SetJSETInstruction
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JSET Jump If Bit Set JSETInstructio
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JSR Jump to Subroutine JSRInstructi
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JSSET Jump to Subroutine if Bit Set
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JSSETJump to Subroutine if Bit SetJ
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JSSET Jump to Subroutine if Bit Set
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LSL Logical Shift Left LSLCondition
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LSR Logical Shift Right LSRConditio
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LUALoad Updated AddressLUACondition
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MAC Signed Multiply-Accumulate MACC
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MACSigned Multiply-AccumulateMACTim
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MACR Signed Multiply-Accumulate and
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MACR Signed MUltiply-Accumulate and
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MOVE Move Data MOVEExplanation of E
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MOVE Move Data MOVEWhen a 56-bit ac
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No Parallel Data MoveInstruction Fo
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I Immediate Short Data Move IExampl
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I Immediate Short Data Move IDDD d
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R Register to Register Data Move RE
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R Register to Register Data Move RI
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uAddress Register UpdateuInstructio
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X: X Memory Data Move X:Note:Due to
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X: X Memory Data Move X:S D DS,D d
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X: X Memory Data Move X:S D DS,D d
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X:R X Memory and Register Data Move
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Y: Y Memory Data Move Y:Note: This
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Y: Y Memory Data Move Y:S D DS,D d
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Y: Y Memory Data Move Y:S D DS,D d
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R:V Register and V Memory Data Move
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R:V Register and Y Memory Data Move
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R:V Register and Y Memory Data Move
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L: Long Memory Data Move L:Example:
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L: Long Memory Data Move L:Instruct
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X: Y: xv Memory Data Move X: Y:Exam
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X: Y: xv Memory Data Move X: Y:S1 D
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MOVEC Move Control Register MOVECst
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MOVEC Move Control Register MOVECCo
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MOVECMove Control RegisterMOVECInst
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MOVEC Move Control Register MOVECTi
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MOVEM Move Program Memory MOVEMoper
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MOVEM Move Program Memory MOVEMInst
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MOVEMMove Program MemoryMOVEMInstru
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MOVEP Move Peripheral Data MOVEPist
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MOVEP Move Peripheral Data MOVEPCon
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MOVEP Move Peripheral Data MOVEPIns
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MOVEP Move Peripheral Data MOVEPIns
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MPY Signed Multiply MPYExplanation
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MPY Signed Multiply MPYInstruction
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MPYR Signed Multiply and Round MPYR
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MPYR Signed Multiply and Round MPYR
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NEGNegate AccumulatorNEGInstruction
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NOPNo OperationNOPInstruction Forma
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NORM Normalize Accumulator Iteratio
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NOTLogical ComplementNOTInstruction
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ORLogical Inclusive ORORInstruction
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ORI OR Immediate with Control Regis
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REP Repeat Next Instruction REPRest
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REPRepeat Next InstructionREPInstru
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REPRepeat Next InstructionREPInstru
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REP Repeat Next Instruction REPNote
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RESETReset On-Chip Peripheral Devic
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RND Round Accumulator RNDConvergent
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RNDRound AccumulatorRNDInstruction
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ROL Rotate Left ROLCondition Codes:
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ROR Rotate Right RORCondition Codes
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RTIReturn from InterruptRTIConditio
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RTSReturn from SubroutineRTSInstruc
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sec Subtract Long with Carry secExp
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secSubtract Long with CarrysecInstr
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STOPStop Instruction ProcessingSTOP
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SUB Subtract SUBCondition Codes:S -
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SUBL Shift Left and Subtract Accumu
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SUBR Shift Right and Subtract Accum
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SWISoftware InterruptSWICondition C
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Tee Transfer Conditionally Teetion
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Tee Transfer Conditionally TeeInstr
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TFR Transfer Data ALU Register TFRC
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TSTTest AccumulatorTSTInstruction F
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WAIT Wait for Interrupt WAITConditi
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including the number of words per i
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5. Compute final results.Thus, base
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JLC (R2+N2)will requireand will exe
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Table A-6 Instruction Timing Summar
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Note that the "ap" term in Table A-
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Table A-14 Memory Access Timing Sum
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Other RestrictionsDO SSH,xxxxJSR to
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Immediately before MOVEC from SSH o
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A.9.S REP RestrictionsThe REP instr
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Table A-18 Triple-Bit Register Enco
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Table A-24 Program Control Unit Reg
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R: Register to Register Parallel Da
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JSSETJSSET#n,X:pp,XXXX#n,Y:pp,xxxx2
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JSSET#n,S,xxxx23 16 15 87 000001011
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BCHGBCHG#n,X:aa#n,Y:aa23 16 15 87 0
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MOVE(M)MOVE(M)S,P:aaP:aa,DREP #XXXR
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LUAea,O23 16 15 87 0I 0 0 0 0 0 1 0
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ENDDO23 16 15 87 00 0 0 0 0 0 0 o 1
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Table A-28 Operation Code QQQ Decod
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Table A-30 Special Case #10 P E R C
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NEGD23 87 43 0DATA BUS MOVE FIELDLS
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ADDRS,D23 87 43 oDATA BUS MOVE FIEL
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lEI
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Table 8-1 27-MHz Benchmark Results
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.*._---*-----*-------**-------....
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;Latest Revision - September 30, 19
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All coefficients are divided by 2:w
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Real input FFT based on Glenn Bergl
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countountcountcountorg y:coefset 0d
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; Real-Valued FFT for MOTOROLA DSP5
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; first group in the last passmove
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A Accumulator ....... ' ...........
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-H- fast ..........................
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PGND ..............................
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DSP56K FAMILY INTRODUCTIONDSP56K CE
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