Texas Instruments Key Features TMS32020, Memory Space, Memories, Repeat Instructions

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TMS320 SECOND-GENERATION

DEVICES

SPRS010B Ð MAY 1987 Ð REVISED NOVEMBER 1990

Key Features: TMS32020

+5 V

GND

• 200-ns Instruction Cycle Time

•544 Words of On-Chip Data RAM

• 128K Words of Total Data/Program

Interrupts

256-Word

288-Word

Data (16)

 

Data/Prog

Data

Memory Space

 

 

 

RAM

RAM

Multi-

• Wait States for Communication to Slower Off-Chip

 

 

Multiplier

Processor

Memories

 

 

 

Interface

• Source Code Compatible With the TMS320C1x

 

 

 

 

32-BIT ALU/ACC

Serial

• Single-Cycle Multiply/Accumulate Instructions

 

 

 

 

 

Shifters

Interface

• Repeat Instructions

 

 

 

 

 

Address (16)

• Global Data Memory Interface

 

Timer

 

• Block Moves for Data/Program Management

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Five Auxiliary Registers With Dedicated

• On-Chip Clock Generator

Arithmetic Unit

• Single 5-V Supply

• Serial Port for Multiprocessing or Interfacing

• NMOS Technology

to Codecs, Serial Analog-to-Digital

Converters, etc.

• 68-Pin Grid Array (PGA) Package

 

Key Features: TMS320C25, TMS320C25-50, TMS320E25

 

 

 

 

 

• 80-ns Instruction Cycle Time (TMS320C25-50)

• 100-ns Instruction Cycle Time (TMS320C25)

• 4K Words of On-Chip Secure Program EPROM

(TMS320E25)

• 4K Words of On-Chip Program

ROM (TMS320C25)

• 544 Words of On-Chip RAM

• 128K Words of Total Program/Data

Memory Space

• Wait States for Communications to

Slower Off-Chip Memories

• Object-Code Compatible With the TMS32020

• Source-Code Compatible With TMS320C1x

• 24 Additional Instructions to Support

Interrupts

MP/MC

+5 V

GND

256-Word 288-Word

Data/Prog Data

RAM RAM

4K-Words

ROM/EPROM

Multiplier

32-Bit ALU/ACC

Shifters

Timer

Data (16)

Multi-

Processor

Interface

Serial

Interface

Address (16)

Adaptive Filtering, FFTs, and

Extended-Precision Arithmetic

• Block Moves for Data/Program Management

• Single-Cycle Multiply/Accumulate Instructions

• Eight Auxiliary Registers With Dedicated

Arithmetic Unit

• Bit-Reversed Indexed-Addressing Mode for

Radix-2 FFTS

• Double-Buffered Serial Port

•On-Chip Clock Generator

•Single 5-V Supply

•Internal Security Mechanism (TMS320E25)

•68-to-28 Pin Conversion Adapter Socket

•CMOS Technology

•68-Pin Grid Array (PGA) Package (TMS320C25)

•68-Lead Plastic Leaded Chip Carrier (PLCC) Package (TMS320C25, TMS320C25-50)

•68-Lead CER-QUAD Package (TMS320E25)

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POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001

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Contents TMS320 SECOND-GENERATION Digital Signal Processors DescriptionPGA and PLCC/CER-QUAD PIN Assignments Signals DefinitionFunction PIN Introduction Key Features TMS32020 Bit-Reversed Indexed-Addressing Mode forMemory Space Wait States for Communication to Slower Off-ChipArchitecture TMS320 Second-Generation Device OverviewPackage TypeFunctional block diagram TMS320C2x SECOND-GENERATION DevicesTimer Scaling shifter16 ⋅ 16-bit parallel multiplier Memory controlTMS320 SECOND-GENERATION Devices Memory MapsExternal interface Interrupts and subroutinesMultiprocessing Instruction set Repeat featureAddressing modes Symbol Definition Instruction SymbolsInstruction set summary TMS320C25 Instruction Set Summary SUBT² XORXORK² ZACApac LPH ²LTA LTP ²Data Memory Operations Mnemonic Description Words TMS320C25 Instruction Set Summary concluded TMS32020 TMS32020 Product NotificationDevelopment support Software Tools Part Number TMS320 Second-Generation Software and Hardware SupportHardware Tools Part Number Specification overview Documentation supportMIN NOM MAX Unit Recommended operating conditionsParameter Test Conditions MIN TYP§ MAX Unit Internal clock option Clock Characteristics and TimingExternal clock option Test Load Circuit Memory and Peripheral Interface Timing Parameter MIN TYP MAX UnitHold Timing RS, INT, BIO, and XF TimingHold Holda Serial Port Timing MP/MC IOH INT Clkin / Clkx / ClkrTMS320C25GBA Parameter Test Conditions MIN TYP MAX Unit External Clock Option ClkinVOH Min TdC1L-AL Low after CLKOUT1 low Serial Port Timing Eprom Programming See Notes 14VPP IPP1CLKIN, CLKX, Clkr INT0 INT2 VIHMP/MC VIL Internal Clock Option External clock option CLKOUT1, CLKOUT2Fcrystal TdC1-S From Clkout if Is present TsuIN Setup before CLKOUT1 high Contrast Summary of Electrical Specifications Clock characteristics and timingParameter MIN TYP MAXMemory and peripheral interface timing RS, INT, BIO, and XF timingHold timing Serial port timingTiming Diagrams Clock timingBR, PS, D S Memory read timingReady Memory write timing CLKOUT1 CLKOUT2 StrbOne wait-state memory access timing MSCReset timing IackInterrupt timing TMS32020 Interrupt timing TMS320C25Serial port receive timing Serial port transmit timingBIO timing External flag timingPC = N PC = N + Hold timing part a HoldHolda ExecuteCLKOUT1 CLKOUT2 Hold timing part BHolda Fetch Fetch Execute Or is D15-D0 TdHH-AH Typical Supply Current Characteristics for TMS320C25 TMS320C25FNL Plcc reflow soldering precautionsPin GB grid array ceramic package TMS32020, TMS320C25 Mechanical DataParameter MAX Unit Advance Jedec NO. Outline Terminals MIN MAX Programming the TMS320E25 Eprom cell Fast programming and verificationPin Nomenclature TMS320E25 VCCEPT EPT VPPTMS320E25 Programming Mode Levels SignalProgram Read Output Name ² PIN Verify Inhibit Disable ErasureFast Programming Flowchart Program verifyRead Output disableROM protection and verification TMS320E25 Protect and Verify Eprom Mode Levels Eprom protectVIH VIL PGM VPP VCC VSS Clkin EPT VPPEprom RbitVIH VIL VPP VCC VCC VIH VIL PGM VIH/VOH HI-Z VIL/VOL VPP EPT VSSTMS320 SECOND-GENERATION NIL Packaging Information Other Qualified Versions of TMS320C25Important Notice
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