TSC21020F Radiation Tolerant 32/40–Bit IEEE Floating–Point DSP Microprocessor Introduction Atmel is manufacturing a radiation tolerant version of the Analog Devices ADSP–21020 32/40–Bit Floating–Point DSP. The product is pin and code compatible with ADI product, making system development straight forward and cost effective, using existing development tools and algorithms. Features D Superscalar IEEE Floating-Point-Processor D Off-Chip Harvard Architecture Maximizes Signal Processing Performance D 50 ns, 20 MIPS Instruction Rate, Single-Cycle Execution D 60 MFLOPS Peak, 40 MFLOPS Sustained Performance D 1024-Point Complex FFT Benchmark : 0.975 ms D Divide (y/x) : 300 ns D Inverse Square Root (1/√x) : 450 ns D 32-Bit Single-Precision and 40-Bit Extended-Precision IEEE Floating-Point Data Formats D 32-Bit Fixed-Point Formats, Integer and Fractional, with 80-Bit Accumulators D IEEE Exception Handling with Interrupt on Exception D Three Independent Computation Units : Multiplier, ALU, and Barrel Shifter D Dual Data Address Generators with Indirect, Immediate, Modulo, and Bit Reverse Addressing Modes D Two Off-Chip Memory Transfers in Parallel with Instruction Fetch and Single-Cycle Multiply & ALU Operations D Multiply with Add & Subtract for FFT Butterfly Computation D Efficient Program Sequencing with Zero-Overhead Looping : Single-Cycle Loop Setup D Single-Cycle Register File Context Switch D 23 ns External RAM Access Time for Zero-Wait-State, 40 ns Instruction Execution D IEEE JTAG Standard 1149.1 Test Access Port and On-Chip Emulation Circuitry D 223 CPGA package for breadboarding D 256 Multi layer quad flat pack, flat leads, for flight models D Full compatible with Analog Devices ADSP-21020 D Latch up immune D Total dose better than 100 Krad (Si) D SEU immunity better than 50 MeV/mg/cm2 D For 25 MHz specification, call factory – Design using patent from INPG–CNRS Denis BESSOT / Raoul VELAZCO – Product licensed from Analog Devices Inc. 1 Rev. E – Oct. 05, 1998 TSC21020F Functional Block Diagram General Description The TSC21020F is single-chip IEEE floating-point processor optimized for digital signal processing applications1. Its architecture is similar to that of Analog Devices’ ADSP-2100 family of fixed-point DSP processors. Fabricated in a high-speed, low-power and radiation tolerant CMOS process, the TSC21020F has a 50 ns instruction cycle time. With a high-performance on-chip instruction cache, the TSC21020F can execute every instruction in a single cycle. The TSC21020F features : D Independent Parallel Computation Units The arithmetic/logic unit (ALU), multiplier and shifter perform single-cycle instructions. The units are architecturally arranged in parallel, maximizing computational throughput. A single multifunction instruction executes parallel ALU and multiplier operations. These computation units support IEEE 32-bit single-precision floating-point, extended precision 40-bit floating-point, and 32-bit fixed-point data formats. D Data Register File A general-purpose data register file is used for transferring data between the computation units and the data buses, and for storing intermediate results. This 10-port (16-register) register file, combined with the TSC21020F’s Harvard architecture, allows 2 Rev. E – Oct. 05, 1998 TSC21020F unconstrained data flow between computation units and off-chip memory. D Single-Cycle Fetch of Instruction and Two Operands The TSC21020F uses a modified Harvard architecture in which data memory stores data and program memory stores both instructions and data. Because of its separate program and data memory buses and on-chip instruction cache, the processor can simultaneously fetch an operand from data memory, an operand from program memory, and an instruction from the cache, all in a single cycle. D Memory Interface Addressing of external memory devices by the TSC21020F is facilitated by on-chip decoding of high-order address lines to generate memory bank select signals. Separate control lines are also generated for simplified addressing of page-mode DRAM. The TSC21020F provides programmable memory wait states, and external memory acknowledge controls allow interfacing to peripheral devices with variable access times. D Instruction Cache The TSC21020F includes a high performance instruction cache that enables three-bus operation for fetching an instruction and two data values. The cache is selective-only the instructions whose fetches conflict with program memory data accesses are cached. This allows full-speed execution of core, looped operations such as digital filter multiply-accumulates and FFT butterfly processing. D Hardware Circular Buffers The TSC21020F provides hardware to implement circular buffers in memory, which are common in digital filters and Fourier transform implementations. It handles address pointer wraparound, reducing overhead (thereby increasing performance) and simplifying implementation. Circular buffers can start and end at any location. D Flexible Instruction Set The TSC21020F’s 48-bit instruction word accommodates a variety of parallel operations, for concise programming. For example, the TSC21020F can conditionally execute a multiply, an add, a subtract and a branch in a single instruction. 1. It is fully compatible with Analog Devices ADSP-21020 3 Rev. E – Oct. 05, 1998 TSC21020F Development System The TSC21020F is supported with a complete set of software and hardware development tools from Analog Devices. The ADSP-21000 Family Development System from Analog Devices includes development software, an evaluation board and an in-circuit emulator. D Assembler Creates relocatable, COFF (Common Object File Format) object files from ADSP-21xxx assembly source code. It accepts standard C preprocessor directives for conditional assembly and macro processing. The algebraic syntax of the ADSP-21xxx assembly language facilitates coding and debugging of DSP algorithms. D Linker/Librarian The Linker processes separately assembled object files and library files to create a single executable program. It assigns memory locations to code and to data in accordance with a user-defined architecture file that describes the memory and I/O configuration of the target system. The Librarian allows you to group frequently used object files into a single library file that can be linked with your main program. D Simulator The Simulator performs interactive, instruction-level simulation of ADSP-21xxx code within the hardware configuration described by a system architecture file. It flags illegal operations and supports full symbolic disassembly. It provides an easy-to-use, window oriented, graphical user interface that is identical to the one used by the ADSP- 21020 EZ-ICE Emulator. Commands are accessed from pull-down menus with a mouse. D PROM Splitter Formats an executable file into files that can be used with an industry-standard PROM programmer. D C Compiler and Runtime Library The C Compiler complies with ANSI specifications. It takes advantage of the TSC21020F’s high-level D D D D language architectural features and incorporates optimizing algorithms to speed up the execution of code. It includes an extensive runtime library with over 100 standard and DSP-specific functions. C Source Level Debugger A full-featured C source level debugger that works with the simulator or EZ-ICE emulator to allow debugging of assembler source, C source, or mixed assembler and C. Numerical C Compiler Supports ANSI Standard (X3J11.1) Numerical C as defined by the Numeric C Extensions Group. The compiler accepts C source input containing Numerical C extensions for array selection, vector math operations, complex data types, circular pointers, and variably dimensioned arrays, and outputs ADSP-21xxx assembly language source code. ADSP- 21020 EZ-LAB Evaluation Board The EZ-LAB Evaluation Board is a general-purpose, standalone TSC21020F system that includes 32K words of program memory and 32K words of data memory as well as analog I/O. A PC RS-232 download path enables the user to download and run programs directly on the EZ-LAB. In addition, it may be used in conjunction with the EZ-ICE Emulator to provide a powerful software debug environment. ADSP- 21020 EZ-ICE Emulator This in-circuit emulator provides the system designer with a PC-based development environment that allows nonintrusive access to the TSC21020F’s internal registers through the processor’s 5-pin JTAG Test Access Port. This use of on-chip emulation circuitry enables reliable, full-speed performance in any target. The emulator uses the same graphical user interface as the ADSP- 21020 Simulator, allowing an easy transition from software to hardware debug. (See “Target System Requirements for Use of EZ-ICE Emulator” on page 27.) REZ-LAB and EZ-ICE are registered trademarks of Analog Devices, Inc. Additional Information This data sheet provides a general overview of TSC21020F functionality. For additional information on the architecture and instruction set of the processor, refer to the ADSP-21020 User’s Manual. For development system and programming reference information, refer to the ADSP-21000 Family Development Software Manuals and the ADSP-21020 Programmer’s Quick Reference. 4 Rev. E – Oct. 05, 1998 TSC21020F Architecture Overview Figure 1 shows a block diagram of the TSC21020F. The processor features: D Three Computation Units (ALU, Multiplier, and Shifter) with a Shared Data Register File D Two Data Address Generators (DAG 1, DAG 2) D Program Sequencer with Instruction Cache D 32-Bit Timer D Memory Buses and Interface D JTAG Test Access Port and On-Chip Emulation Support Computation Units The TSC21020F contains three independent computation units : an ALU, a multiplier with fixed-point accumulator, and a shifter. In order to meet a wide variety of processing needs, the computation units process data in three formats : 32-bit fixed-point, 32-bit floating-point and 40-bit floating-point. The floating-point operations are single-precision IEEE-compatible (IEEE Standard 754/854). The 32-bit floating-point format is the standard IEEE format, whereas the 40-bit IEEE extendedprecision format has eight additional LSBs of mantissa for greater accuracy. The multiplier performs floating-point and fixed-point multiplication as well as fixed-point multiply/add and multiply/subtract operations. Integer products are 64 bits wide, and the accumulator is 80 bits wide. The ALU performs 45 standard arithmetic and logic operations, supporting both fixed-point and floating-point formats. The shifter performs 19 different operations on 32-bit operands. These operations include logical and arithmetic shifts, bit manipulation, field deposit, and extract and derive exponent operations. The computation units perform single-cycle operations ; there is no computation pipeline. The three units are connected in parallel rather than serially, via multiple-bus connections with the 10-port data register file. The output of any computation unit may be used as the input of any unit on the next cycle. In a multifunction computation, the ALU and multiplier perform independent, simultaneous operations. Data Register File The TSC21020F’s general-purpose data register file is used for transferring data between the computation units and the data buses, and for storing intermediate results. The register file has two sets (primary and alternate) of sixteen 40-bit registers each, for fast context switching. Figure 1. TSC21020F Block Diagram 5 Rev. E – Oct. 05, 1998 TSC21020F With a large number of buses connecting the registers to the computation units, data flow between computation units and from/to off-chip memory is unconstrained and free from bottlenecks. The 10-port register file and Harvard architecture of the TSC21020F allow the following nine data transfers to be performed every cycle : D Off-chip read/write of two operands to or from the register file D Two operands supplied to the ALU D Two operands supplied to the multiplier D Two results received from the ALU and multiplier (three, if the ALU operation is a combined addition/subtraction). The processor’s 48-bit orthogonal instruction word supports fully parallel data transfer and arithmetic operations in the same instruction. Address Generators and Program Sequencer Two dedicated address generators and a program sequencer supply addresses for memory accesses. Because of this, the computation units need never be used to calculate addresses. Because of its instruction cache, the TSC21020F can simultaneously fetch an instruction and data values from both off-chip program memory and off-chip data memory in a single cycle. The data address generators (DAGs) provide memory addresses when external memory data is transferred over the parallel memory ports to or from internal registers. Dual data address generators enable the processor to output two simultaneous addresses for dual operand reads and writes. DAG 1 supplies 32-bit addresses to data memory. DAG 2 supplies 24-bit addresses to program memory for program memory data accesses. Each DAG keeps track of up to eight address pointers, eight modifiers, eight buffer length values and eight base values. A pointer used for indirect addressing can be modified by a value in a specified register, either before (premodify) or after (post-modify) the access. To implement automatic modulo addressing for circular buffers, the TSC21020F provides buffer length registers that can be associated with each pointer. Base values for pointers allow circular buffers to be placed at arbitrary locations. Each DAG register has an alternate register that can be activated for fast context switching. The program sequencer supplies instruction addresses to program memory. It controls loop iterations and evaluates conditional instructions. To execute looped code with zero overhead, the TSC21020F maintains an internal loop counter and loop stack. No explicit jump or decrement instructions are required to maintain the loop. The TSC21020F derives its high clock rate from pipelined fetch, decode and execute cycles. Approximately 70% of the machine cycle is available for memory accesses ; consequently, TSC21020F systems can be built using slower and therefore less expensive memory chips. Instruction Cache The program sequencer includes a high performance, selective instruction cache that enables three-bus operation for fetching an instruction and two data values. This two-way, set-associative cache holds 32 instructions. The cache is selective (only the instructions whose fetches conflict with program memory data accesses are cached), so the TSC21020F can perform a program memory data access and can execute the corresponding instruction in the same cycle. The program sequencer fetches the instruction from the cache instead of from program memory, enabling the TSC21020F to simultaneously access data in both program memory and data memory. Context Switching Many of the TSC21020F’s registers have alternate register sets that can be activated during interrupt servicing to facilitate a fast context switch. The data registers in the register file, DAG registers and the multiplier result register all have alternate sets. Registers active at reset are called primary registers ; the others are called alternate registers. Bits in the MODE1 control register determine which registers are active at any particular time. The primary/alternate select bits for each half of the register file (top eight or bottom eight registers) are independent. Likewise, the top four and bottom four register sets in each DAG have independent primary/alternate select bits. This scheme allows passing of data between contexts. Interrupts The TSC21020F has four external hardware interrupts, nine internally generated interrupts, and eight software interrupts. For the external interrupts and the internal timer interrupt, the TSC21020F automatically stacks the arithmetic status and mode (MODE1) registers when servicing the interrupt, allowing five nesting levels of fast service for these interrupts. 6 Rev. E – Oct. 05, 1998 TSC21020F An interrupt can occur at any time while the TSC21020F is executing a program. Internal events that generate interrupts include arithmetic exceptions, which allow for fast trap handling and recovery. Timer The programmable interval timer provides periodic interrupt generation. When enabled, the timer decrements a 32-bit count register every cycle. When this count register reaches zero, the TSC21020F generates an interrupt and asserts its TIMEXP output. The count register is automatically reloaded from a 32-bit period register and the count resumes immediately. System Interface Figure 2 shows an TSC21020F basic system configuration. The external memory interface supports memorymapped peripherals and slower memory with a user-defined combination of programmable wait states and hardware acknowledge signals. Both the program memory and data memory interfaces support addressing of page-mode DRAMs. The TSC21020F’s internal functions are supported by four internal buses : the program memory address (PMA) and data memory address (DMA) buses are used for addresses associated with program and data memory. The program memory data (PMD) and data memory data (DMD) buses are used for data associated with the two memory spaces. These buses are extended off chip. Four data memory select (DMS) signals select one of four user-configurable banks of data memory. Similarly, two program memory select (PMS) signals select between two user-configurable banks of program memory. All banks are independently programmable for 0-7 wait states. The PX registers permit passing data between program memory and data memory spaces. They provide a bridge between the 48-bit PMD bus and the 40-bit DMD bus or between the 40-bit register file and the PMD bus. The PMA bus is 24 bits wide allowing direct access of up to 16M words of mixed instruction code and data. The PMD is 48 bits wide to accommodate the 48-bit instruction width. For access of 40-bit data the lower 8 bits are unused. For access of 32-bit data the lower 16 bits are ignored. The DMA bus is 32 bits wide allowing direct access of up to 4 Gigawords of data. The DMD bus is 40 bits wide. For 32-bit data, the lower 8 bits are unused. The DMD bus provides a path for the contents of any register in the processor to be transferred to any other register or to any external data memory location in a single cycle. The data memory address comes from one of two sources : an absolute value specified in the instruction code (direct addressing) or the output of a data address generator (indirect addressing). Figure 2. Basic System Configuration. 7 Rev. E – Oct. 05, 1998 TSC21020F External devices can gain control of the processor’s memory buses from the TSC21020F by means of the bus request/grant signals (BR and BG). To grant its buses in response to a bus request, the TSC21020F halts internal operations and places its program and data memory interfaces in a high impedance state. In addition, three-state controls (DTMS and PMTS) allow an external device to place either the program or data memory interface in a high impedance state without affecting the other interface and without halting the TSC21020F unless it requires a memory access from the affected interface. The three-state controls make it easy for an external cache controller to hold the TSC21020F off the bus while it updates an external cache memory. JTAG Test and Emulation Support The TSC21020F implements the boundary scan testing provisions specified by IEEE Standard 1149.1 of the Joint Testing Action Group (JTAG). The TSC21020F’s test access port and on-chip JTAG circuitry is fully compliant with the IEEE 1149.1 specification. The test access port enables boundary scan testing of circuitry connected to the TSC21020F’s I/O pins. The TSC21020F also implements on-chip emulation through the JTAG test access port. The processor’s eight sets of breakpoint range registers enable program execution at full speed until reaching a desired breakpoint address range. The processor can then halt and allow reading/writing of all the processor’s internal registers and external memories through the JTAG port. Pin Descriptions This section describes the pins of the TSC21020F. When groups of pins are identified with subscripts, e.g. PMD47-0, the highest numbered pin is the MSB (in this case, PMD47). Inputs identified as synchronous (S) must meet timing requirements with respect to CLKIN (or with respect to TCK for TMS, TDI, and TRST). Those that are asynchronous (A) can be asserted asynchronously to CLKIN. Pin Name Type Function PMACK I/S Program Memory Acknowledge. An external device deasserts this input to add wait states to a memory access. PMPAGE O Program Memory Page Boundary. The TSC21020F asserts this pin to signal that a program memory page boundary has been crossed. Memory pages must be defined in the memory control registers. PMTS I/S Program Memory Three-State Control. PMTS places the program memory address, data, selects, and strobes in a high-impedance state. If PMTS is asserted while a PM access is occurring, the processor will halt and the memory access will not be completed. PMACK must be asserted for at least one cycle when PMTS is deasserted to allow any pending memory access to complete properly. PMTS should only be asserted (low) during an active memory access cycle. DMA31-0 O Data Memory Address. The TSC21020F outputs an address in data memory on these pins. DMD39-0 I/O Data Memory Data. The TSC21020F inputs and outputs data on these pins. 32-bit fixed-point data and 32-bit single-precision floating-point data is transferred over bits 39-8 of the DMD bus. DMS3-0 O Data Memory Select lines. These pins are asserted as chip selects for the corresponding banks of data memory. Memory banks must be defined in the memory control registers. These pins are decoded data memory address lines and provide an early indication of a possible bus cycle. O = Output ; I = Input ; S = Synchronous ; A = Asynchronous ; P = Power Supply ; G = Ground. Pin Name Type Function PMA23-0 O Program Memory Address. The TSC21020F outputs an address in program memory on these pins. PMD47-0 I/O Program Memory Data. The TSC21020F inputs and outputs data and instructions on these pins. 32-bit fixed-point data and 32-bit single-precision floating-point data is transferred over bits 47-16 of the PMD bus. PMS1-0 O Program Memory Select lines. These pins are asserted as chip selects for the corresponding banks of program memory. Memory banks must be defined in the memory control registers. These pins are decoded program memory address lines and provide an early indication of a possible bus cycle. PMRD O Program Memory Read strobe. This pin is asserted when the TSC21020F reads from program memory. PMWR O Program Memory Write strobe. This pin is asserted when the TSC21020F writes to program memory. 8 Rev. E – Oct. 05, 1998 TSC21020F Pin Name Type Function DMRD O Data Memory Read strobe. This pin is asserted when the TSC21020F reads from data memory. DMWR O Data Memory Write strobe. This pin is asserted when the TSC21020F writes to data memory. DMACK I/S Data Memory Acknowledge. An external device deasserts this input to add wait states to a memory access. DMPAGE O Data Memory Page Boundary. The TSC21020F asserts this pin to signal that a data memory page boundary has been crossed. Memory pages must be defined in the memory control registers. DMTS CLKIN I/S I Data Memory Three-State Control. DMTS places the data memory address, data, selects, and strobes in a high-impedance state. If DMTS is asserted while à DM access is occurring, the processor will halt and the memory access will not be completed. DMACK must be asserted for at least one cycle when DMTS is deasserted to allow any pending memory access to complete properly. DMTS should only be asserted (low) during an active memory access cycle. External clock input to the TSC21020F. The instruction cycle rate is equal to CLKIN. CLKIN may not be halted, changed, or operated below the specified frequency. RESET I/A Sets the TSC21020F to a known state and begins execution at the program memory location specified by the hardware reset vector (address). This input must be asserted (low) at power-up. IRQ3-0 I/A Interrupt request lines ; may be either edgeriggered or level-sensitive. FLAG3-0 BR I/O/A External Flags. Each is configured via control bits as either an input or output. As an input, it can be tested as a condition. As an output, it can be used to signal external peripherals. I/A Bus Request. Used by an external device to request control of the memory interface. When BR is asserted, the processor halts execution after completion of the current cycle, places all memory data, addresses, selects, and strobes in a high-impedance state, and asserts BG. The processor continues normal operation when BR is released. Pin Name Type Function BG O Bus Grant. Acknowledges a bus request (BR), indicating that the external device may take control of the memory interface. BG is asserted (held low) until BR is released. TIMEXP O Timer Expired. Asserted for four cycles when the value of TCOUNT is decremented to zero. RCOMP Not available Can be set to any voltage level. EVDD P Power supply (for output drivers), nominally + 5 V dc (10 pins). EGND G Power supply return (for output drivers) ; (16 pins). IVDD P Power supply (for internal circuitry), nominally + 5 V dc (4 pins). IGND G Power supply return (for internal circuitry) ; (7 pins). TCK I Test Clock. Provides an asynchronous clock for JTAG boundary scan. TMS I/S Test Mode Select. Used to control the test state machine. TMS has a 20 kΩ internal pullup resistor. TDI I/S Test Data Input. Provides serial data for the boundary scan logic. TDI has a 20 kΩ internal pullup resistor. TDO O Test Data Output. Serial scan output of the boundary scan path. TRST I/A NC Test Reset. Resets the test state machine. TRST must be asserted (pulsed low) after power-up or held low for proper operation of the TSC21020F. TRST has a 20 kΩ internal pullup resistor. No Connect. No Connects are reserved pins that must be left open and unconnected. 9 Rev. E – Oct. 05, 1998 TSC21020F Instruction Set Summary The TSC21020F instruction set provides a wide variety of programming capabilities. Every instruction assembles into a single word and can execute in a single processor cycle. Multifunction instructions enable simultaneous multiplier and ALU operations, as well as computations executed in parallel with data transfers. The addressing power of the TSC21020F gives flexibility in moving data both internally and externally. The TSC21020F assembly language uses an algebraic syntax for ease of coding and readability. The instruction types are grouped into four categories : Compute and Move or Modify Program Flow Control Immediate Move Miscellaneous The instruction types are numbered ; there are 22 types. Some instructions have more than one syntactical form ; for example, Instruction 4 has four distinct forms. The instruction number itself has no bearing on programming, but corresponds to the opcode recognized by the TSC21020F device. Because of the width and orthogonality of the instruction word, there are many possible instructions. For example, the ALU supports 21 fixed-point operations and 24 floating-point operations ; each of these operations can be the compute portion of an instruction. The following pages provide an overview and summary of the TSC21020F instruction set. For complete information, see the ADSP-21020 User’s Manual from Analog Devices. For additional reference information, see the ADSP- 21020 Programmer’s Quick Reference from Analog Devices. This section also contains several reference tables for using the instruction set. D Table 1 describes the notation and abbreviations used. D Table 2 lists all condition and termination code mnemonics. D Table 3 lists all register mnemonics. D Tables 4 through 7 list the syntax for all compute (ALU, multiplier, shifter or multifunction) operations. D Table 8 lists interrupts and their vector addresses. Compute and Move or Modify Instructions 1. compute, 2. 3a. IF condition IF condition compute ; compute, 3b. IF condition compute, 3c. IF condition compute, 3d. IF condition compute, 4a. IF condition compute, 4b. IF condition compute, 4c. IF condition compute, 4d. IF condition compute, 5. 6a. IF condition IF condition compute, shiftimm, Ť Ť Ť DM(Ia, Mb) + dreg1 dreg1 + DM(Ia, Mb) Ť Ť Ť Ť , PM(Ic, Md) + dreg2 dreg2 + PM(Ic, Md) Ť DM(Ia, Mb) = ureg ; PM(Ic, Md) DM(Mb, Ia) = ureg ; PM(Md, Ic) ureg = DM(Ia, Mb) ; PM(Ic, Md) ureg = DM(Mb, Ia) ; PM(Md, Ic) DM(Ia, t data6 u) = dreg ; PM(Ic, t data6 u) DM(t data6 u, Ia) = dreg ; PM(t data6 u, Ic) dreg = DM(Ia, t data6 u) ; PM(Ic, t data6 u) dreg = DM(t data6 u, Ia) ; PM(t data6 u, Ic) ureg1 = ureg2 ; DM(Ia, Mb) = dreg ; PM(Ic, Md) Ť Ť Ť Ť Ť Ť Ť Ť Ť Ť Ť Ť Ť Ť 10 Rev. E – Oct. 05, 1998 TSC21020F 6b. IF condition shiftimm, 7. IF condition compute, Ť Ť Ť dreg = DM(Ia, Mb) ; PM(Ic, Md) MODIFY (Ia, Mb) ; (Ic, Md) Ť Program Flow Control Instructions 8. IF condition JUMP ŤCALL Ť u Ť(PC, ttaddr24 reladdr24 u)Ť 9. IF condition JUMP ŤCALL Ť Ť 11. IF condition ŤRTS RTI Ť ( 12. LCNTR = Ť Ť (Md, Ic) (PC, t reladdr6 u) Ť Ť Ť Ť Ť Ť Ť DB ) ; LA DB, LA ( DB ) , LA DB, LA ; ( DB ) , compute LA DB, LA , DO t addr24 u t data16 u ureg (PC, t reladdr24 u) 13. DO Ť Ť u Ť(PC, ttaddr24 reladdr24 u)Ť compute ; UNTIL LCE ; UNTIL termination ; (DB) Delayed branch (LA) Loop abort (pop loop PC stacks on branch) Immediate Move Instructions 14a. 14b. 15a. 15b. 16. 17. Ť Ť DM(t addr32 u) = ureg ; PM(t addr24 u) ureg = DM(t addr32 u) ; PM(t addr24 u) DM(t data32 u, Ia) = ureg ; PM(t data24 u, Ic) ureg = DM(t data32 u, Ia) ; PM(t data24 u, Ic) DM(Ia, Mb) = < data32 > ; PM(Ic, Md) ureg = < data 32 > ; Ť Ť Ť Ť Ť Ť Ť Ť Miscellaneous Instructions SET ȧCLR ȧ ȧTGLȧ ȧTSTȧ ȧXORȧ ȧ ȧ 18. BIT 19a. MODIFY 19b. 20. BITREV PUSH POP NOP ; IDLE ; 21. 22. Ť Ť sreg < data32 > ; Ť Ť (Ia, t data32 u ; Ic, t data32 u (Ia, < data32 >) ; PUSH LOOP , POP Ť Ť STS ; 11 Rev. E – Oct. 05, 1998 TSC21020F Table 1 : Syntax Notation Conventions Notation UPPERCASE ; , italics between lines <datan> <addrn> <reladdrn> compute shiftimm condition termination ureg sreg dreg Ia Mb Ic Md Meaning Explicit syntax – assembler keyword (notation only ; assembler is not case-sensitive and lowercase is the preferred programming convention) Instruction terminator Separates parallel operations in an instruction Optional part of instruction List of options (choose one) n-bit immediate data value n-bit immediate address value n-bit immediate PC-relative address value ALU, multiplier, shifter or multifunction operation (from Tables 4-7) Shifter immediate operation (from Table 6) Status condition (from Table 2) Termination condition (from Table 2) Universal register (from Table 3) System register (from Table 3) R15-R0, F15-F0 ; register file location I7-I0 ; DAG1 index register M7-M0 ; DAG1 modify register I15-I8 ; DAG2 index register M15-M8 ; DAG2 modify register Table 2 : Condition and Termination Codes Name eq ne ge lt le gt ac not ac av not av mv not mv ms not ms sv not sv sz not sz flag0_in not flag0_in flag1_in not flag1_in flag2_in not flag2_in flag3_in not flag3_in tf not tf lce not lce forever true Description ALU equal to zero ALU not equal to zero ALU greater than or equal to zero ALU less than zero ALU less than or equal to zero ALU greater than zero ALU carry Not ALU carry ALU overflow Not ALU overflow Multiplier overflow Not multiplier overflow Multiplier sign Not multiplier sign Shifter overflow Not shifter overflow Shifter zero Not shifter zero Flag 0 Not Flag 0 Flag 1 Not Flag 1 Flag 2 Not Flag 2 Flag 3 Not Flag 3 Bit test flag Not bit test flag Loop counter expired (DO UNTIL) Loop counter not expired (IF) Always False (DO UNTIL) Always True (IF) Table 3 : Universal Registers Name Function Register file R15-R0 Register file locations Program Sequencer PC* Program counter ; address of instruction currently executing PCSTK Top of PC stack PCSTKP PC stack pointer FADDR* Fetch address DADDR* Decode address LADDR Loop termination address, code ; top of loop address stack CURLCNTR Current loop counter ; top of loop count stack LCNTR Loop count for next nested counter-controlled loop Data Address Generators I7-I0 DAG1 index registers M7-M0 DAG1 modify registers L7-L0 DAG1 length registers B7-B0 DAG1 base registers I15-I8 DAG2 index registers M15-M8 DAG2 modify registers L15-L8 DAG2 length registers B15-B8 DAG2 base registers Bus Exchange PX1 PMD-DMD bus exchange 1 (16 bits) PX2 PMD-DMD bus exchange 2 (32 bits) PX 48-bit PX1 and PX2 combination Timer TPERIOD Timer period TCOUNT Timer counter Memory Interface DMWAIT Wait state and page size control for data memory DMBANK1 Data memory bank 1 upper boundary DMBANK2 Data memory bank 2 upper boundary DMBANK3 Data memory bank 3 upper boundary DMADR* Copy of last data memory address PMWAIT Wait state and page size control for program memory PMBANK1 Program memory bank 1 upper boundary PMADR* Copy of last program memory address System Register MODE1 Mode control bits for bit-reverse, alternate registers, interrupt nesting and enable, ALU saturation, floating-point rounding mode and boundary MODE2 Mode control bits for interrupt sensitivity, cache disable and freeze, timer enable, and I/O flag configuration IRPTL Interrupt latch IMASK Interrupt mask IMASKP Interrupt mask pointer (for nesting) ASTAT Arithmetic status flags, bit test, I/O flag values, and compare accumulator STKY Sticky arithmetic status flags, circular buffer overflow flags, stack status flags (not sticky) USTAT1 User status register 1 USTAT2 User status register 2 * read-only Refer to User’s Manual for bit-level definitions of each register. In a conditional instruction, the execution of the entire instruction is based on the specified condition. 12 Rev. E – Oct. 05, 1998 TSC21020F Table 4 : ALU Compute Operations Fixed-Point Floating-Point Rn = Rx + Ry Rn = Rx – Ry Rn = Rx + Ry, Rm = Rx – Ry Rn = Rx + Ry + CI Rn = Rx – Ry + CI – 1 Rn = (Rx + Ry)/2 COMP(Rx, Ry) Rn = –Rx Rn = ABS Rx Rn = PASS Rx Rn = MIN(Rx, Ry) Rn = MAX(Rx, Ry) Rn = CLIP Rx BY Ry Rn = Rx + CI Rn = Rx + CI – 1 Rn = Rx + 1 Rn = Rx – 1 Rn = Rx AND Ry Rn = Rx OR Ry Rn = Rx XOR Ry Rn = NOT Rx Fn = Fx + Fy Fn = Fx – Fy Fn = Fx + Fy, Fm = Fx – Fy Fn = ABS (Fx + Fy) Fn = ABS (Fx – Fy) Fn = (Fx + Fy)/2 COMP(Fx, Fy) Fn = –Fx Fn = ABS Fx Fn = PASS Fx Fn = MIN(Fx, Fy) Fn = MAX(Fx, Fy) Fn = CLIP Fx BY Fy Fn = RND Fx Fn = SCALB Fx BY Ry Rn = MANT Fx Rn = LOGB Fx Rn = FIX Fx BY Ry Rn = FIX Fx Fn = FLOAT Rx BY Ry Fn = FLOAT Rx Fn = RECIPS Fx Fn = RSQRTS Fx Fn = Fx COPYSIGN Fy Rn, Rx, Ry R15-R0 ; register file location, fixed-point Fn, Fx, Fy F15-F0 ; register file location, floating point Table 5 : Multiplier Compute Operations Ť Ť Rn MRF MRB Rn Rn MRF MRB Ť ŤŤ Ť Ť FI Ť) = Rx * Ry ( S S U U Fn FR + Rx * Ry ( S S F ) + MRF U U I + MRB FR + MRF + MRB Rn + SAT MRF (SI) Rn + SAT MRB (UI) MRF + SAT MRF (SF) MRB + SAT MRB (UF) ȧ ȧ ȧ ȧ ȧ ȧ ȧ ȧ ȧ ȧ ȧ ȧ MRF = 0 ŤMRB Ť MRxF = Rn ŤMRxB Ť Rn, Rx, Ry Fn, Fx, Fy MRxF MRxB ( x-input Ť S U I F FR (SF) (SSF) Ť Ť Ť ŤŤ Ť Ť ȧ ȧ ȧȧ ȧȧ ȧȧ ȧ ȧ ȧ ȧ ȧ ȧ Ť = Fx * Fy ŤŤ Rn + MRF – Rx * Ry ( S S F ) ŤUŤŤUŤ I ȧ Rn + MRBȧ ȧMRF ȧ FR ȧ + MRFȧ ȧMRB + MRBȧ Rn + RND MRF (SF) ȧ Ť(UF)Ť Rn + RND MRBȧ ȧ ȧMRF ȧ + RND MRFȧ ȧMRB + RND MRBȧ Rn Ť = MRxF MRxB Ť R15-R0 ; register file location, fixed-point F15-F0 ; register file location, floating-point MR2F, MR1F, MR0F ; multiplier result accumulators, foreground MR2B, MR1B, MR0B ; multiplier result accumulators, background y-input data format, ) rounding Ť Ť Ť Signed input Unsigned input Integer input(s) Fractional input(s) Fractional inputs, Rounded output Default format for 1-input operations Default format for 2-input operations 13 Rev. E – Oct. 05, 1998 TSC21020F Table 6 : Shifter and Shifter Immediate Compute Operations Shifter Shifter Immediate Rn = LSHIFT Rx BY Ry Rn = Rn OR LSHIFT Rx BY Ry Rn = ASHIFT Rx BY Ry Rn = Rn OR ASHIFT Rx BY Ry Rn = ROT Rx BY RY Rn = BCLR Rx BY Ry Rn = BSET Rx BY Ry Rn = BTGL Rx BY Ry BTST Rx BY Ry Rn = FDEP Rx BY Ry Rn = Rn OR FDEP Rx BY Ry Rn = FDEP Rx BY Ry (SE) Rn = Rn OR FDEP Rx BY Ry (SE) Rn = FEXT Rx BY Ry Rn = FEXT Rx BY Ry (SE) Rn = EXP Rx Rn = EXP Rx (EX) Rn = LEFTZ Rx Rn = LEFTO Rx Rn = LSHIFT Rx BY<data8> Rn = Rn OR LSHIFT Rx BY<data8> Rn = ASHIFT Rx BY<data8> Rn = Rn OR ASHIFT Rx BY<data8> Rn = ROT Rx BY<data8> Rn = BCLR Rx BY<data8> Rn = BSET Rx BY<data8> Rn = BTGL Rx BY<data8> BTST Rx BY<data8> Rn = FDEP Rx BY <bit6> : <len6> Rn = Rn OR FDEP Rx BY <bit6> : <len6> Rn = FDEP Rx BY <bit6> : <len6> (SE) Rn = Rn OR FDEP Rx BY (bit6> : <len6> (SE) Rn = FEXT Rx BY <bit6> : <len6> Rn = FEXT Rx BY <bit6> : <len6> (SE) Rn, Rx, Ry R15-R0 ; register file location, fixed-point <bit6> : <len6> 6-bit immediate bit position and length values (for shifter immediate operations) Table 7 : Multifunction Compute Operations Fixed-Point Floating-Point Rm = R3-0 * R7-4 (SSFR), Ra = R11-8 + R15-12 Rm = R3-0 * R7-4 (SSFR), Ra = R11-8 – R15-12 Rm = R3-0 * R7-4 (SSFR), Ra = (R11-8 + R15-12)/2 MRF = MRF + R3-0 * R7-4 (SSF), Ra = R11-8 + R15-12 MRF = MRF + R3-0 * R7-4 (SSF), RA = R11-8 – R15-12 MRF = MRF + R3-0 * R7-4 (SSF), Ra = (R11-8 + R15-12)/2 Rm = MRF + R3-0 * R7-4 (SSFR), Ra = R11-8 + R15-12 Rm = MRF + R3-0 * R7-4 (SSFR), Ra = R11-8 – R15-12 Rm = MRF + R3-0 * R7-4 (SSFR), Ra = (R11-8 + R15-12)/2 MRF = MRF – R3-0 * R7-4 (SSF), Ra = R11-8 + R15-12 MRF = MRF – R3-0 * R7-4 (SSF), Ra = R11-8 – R15-12 MRF = MRF – R3-0 * R7-4 (SSF), Ra = R11-8 + R15-12)/2 Rm = MRF – R3-0 * R7-4 (SSFR), Ra = R11-8 + R15-12 Rm = MRF – R3-0 * R7-4 (SSFR), Ra = R11-8 – R15-12 Rm = MRF – R3-0 * R7-4 (SSFR), Ra = (R11-8 + R15-12)/2 Rm = R3-0 * R7-4 (SSFR), Ra = R11-8 + R15-12, Rs = R11-8 – R15-12 Fm = F3-0 * F7-4, Fm = F3-0 * F7-4, Fm = F3-0 * F7-4, Fm = F3-0 * F7-4, Fm = F3-0 * F7-4, Fm = F3-0 * F7-4, Fm = F3-0 * F7-4, Fm = F3-0 * F7-4, Fm = F3-0 * F7-4, Ra, Rm R3-0 R7-4 R11-8 R15-12 Fa, Fm F3-0 F7-4 F11-8 F15-12 (SSF) (SSFR) Fa = F11-8 + F15-12 Fa = F11-8 – F15-12 Fa = FLOAT R11-8 by R15-12 Fa = FIX R11-8 by R15-12 Fa = (F11-8 + F15-12)/2 Fa = ABS F11-8 Fa = MAX (F11-8, F15-12) Fa = MIN (F11-8 + F15-12) Fa = F11-8 + F15-12, Fs = F11-8 – F15-12 Any register file location (fixed-point) R3, R2, R1, R0 R7, R6, R5, R4 R11, R10, R9, R8 R15, R14, R13, 12 Any register file location (floating-point) F3, F2, F1, F0 F7, F6, F5, F4 F11, F10, F9, F8 F15, F14, F13, F12 X-input signed, Y-input signed, fractional inputs X-input signed, Y-input signed, fractional inputs, rounded output 14 Rev. E – Oct. 05, 1998 TSC21020F Table 8 : Interrupt Vector Addresses and Priorities No Vector Address (Hex) Function 0 1* 0x00 0x08 Reserved Reset 2 0x10 Reserved 3 0x18 Status stack or loop stack overflow or PC stack full 4 0x20 Timer = 0 (high priority option) 5 0x28 IRQ3 asserted 6 0x30 IRQ2 asserted 7 0x38 IRQ1 asserted 8 0x40 IRQ0 asserted 9 0x48 Reserved 10 0x50 Reserved 11 0x58 DAG 1 circular buffer 7 overflow 12 0x60 DAG 2 circular buffer 15 overflow 13 0x68 Reserved 14 0x70 Timer = 0 (low priority option) 15 0x78 Fixed-point overflow 16 0x80 Floating-point overflow 17 0x88 Floating-point underflow 18 0x90 Floating-point invalid operation 19-23 24-31 0x98-0xB8 0xC0-OxF8 Reserved User software interrupts * Nonmaskable 15 Rev. E – Oct. 05, 1998 TSC21020F TSC21020F – Specifications Recommended Operating Conditions Mil Range Parameter Min Max Unit VDD Supply Voltage 4.50 5.50 V TAMB Ambient Operating Temperature –55 +125 °C Electrical Characteristics Parameter VIH VIHCR VIL VILC VOH VOL IIH IIL IILT IOZH IOZL IDDIN Hi-Level Input Voltage1 Hi-Level Input Voltage2, 12 Lo-Level Input Voltage1, 12 Lo-Level Input Voltage2 Hi-Level Output Voltage3, 11 Lo-Level Output Voltage3, 11 Hi-Level Input Current4, 5 Lo-Level Input Current4 Lo-Level Input Current5 Tristate Leakage Current6 Tristate Leakage Current6 Supply Current (Internal)7 IDDIDLE Supply Current (Idle)8 CIN Input Capacitance9, 10 Test Conditions VDD = max VDD = max VDD = min VDD = min VDD = min, IOH = –1.0 mA VDD = min, IOL = 4.0 mA VDD = max, VIN = VDD max VDD = max, VIN = 0 V VDD = max, VIN = 0 V VDD = max, VIN = VDD max VDD = max, VIN = 0 V tCK = 50 ns, VDD = max, VIHCR = 3.0 V, VIH = 2.4 V, VIL = VILC = 0.4 V VDD = max, VIN = 0 V or VDD max fIN = 1 MHz, TCASE = 25°C, VIN = 2.5 V Min Max 2.0 3.0 Unit 0.4 10 10 350 10 10 430 V V V V V V µA µA µA µA µA mA 100 10 mA pF 0.8 0.6 2.4 NOTES 1. Applies to : PMD47-0, PMACK, PMTS, DMD39-0, DMACK, DMTS, IRQ3-0, FLAG3-0, BR, TMS, TDI. 2. Applies to : CLKIN, TCK. 3. Applies to : PMA23-0, PMD47-0, PMS1-0, PMRD, PMWR, PMPAGE, DMA31-0, DMD39-0, DMS3-0, DMRD, DMWR, DMPAGE, FLAG3-0, TIMEXP, BG. 4. Applies to : PMACK, PMTS, DMACK, DMTS, IRQ3-0, BR, CLKIN, RESET, TCK. 5. Applies to : TMS, TDI, TRST. 6. Applies to : PMA23-0, PMD47-0, PMS1-0, PMRD, PMWR, PMPAGE, DMA31-0, DMD39-0, DMS3-0, DMRD, DMWR, DMPAGE, FLAG3-0, TDO. 7. Applies to IVDD pins. At tCK = 50 ns, IDDIN (typical) = 350 mA. See “Power Dissipation” for calculation of external (EVDD) supply current for total supply current. 8. Applies to IVDD pins. Idle refers to TSC21020F state of operation during execution of the IDLE instruction. 9. Guaranteed but not tested. 10. Applies to all signal pins. 11. Although specified for TTL outputs, all TSC21020F outputs are CMOS-compatible and will drive to VDD and GND assuming no dc loads. 12. Applies to RESET, TRST. Absolute Maximum Ratings* Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to + 7 V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to VDD + 0.5 V Output Voltage Swing . . . . . . . . . . . . . . . . . . . -0.5 V to VDD + 0.5 V Load Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 pF Operating Temperature Range (Ambient) . . . . . . . . -55°C to + 125°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . -65°C to + 150°C * Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 16 Rev. E – Oct. 05, 1998 TSC21020F ESD Sensitivity The TSC21020F features proprietary input protection circuitry to dissipate high–energy discharges (Human Body Model). Per method 3015 of MIL–STD–883, the TSC21020F has been classified as a Class 2 devices, with the ability to withstand up to 2000V ESD. Prosper ESD precautions are strongly recommended to avoid functional damage or performance degradation. Charges readily accumulate on the human body and test equipment and discharge without detection. Unused devices must be stored in conductive foam or shunts, and the foam should be discharged to the destination socket before devices are removed. TIMING PARAMETERS General Notes See Figure 15 on page 25 for voltage reference levels. Use the exact timing information given. Do not attempt to derive parameters from the addition or subtraction of others. While addition or subtraction would yield meaningful results for an individual device, the values given in this data sheet reflect statistical variations and worst cases. Consequently, you cannot meaningfully add parameters to derive other specifications. Clock Signal 20 MHz Parameter Unit Min Max 50 10 10 150 Timing Requirement TCK tCKH tCKL CLKIN Period CLKIN Width High CLKIN Width Low ns ns ns Figure 3. Clock 17 Rev. E – Oct. 05, 1998 TSC21020F Reset Frequency Dependency* 20 MHz Parameter Unit Min Max Min Max 200 29 50 4tCK 29 + DT/2 30 Timing Requirement tWRST1 RESET Width Low tSRST2 RESET Setup before CLKIN High ns ns NOTES * DT = tCK – 50 ns 1. Applies after the power-up sequence is complete. At power up, the Internal Phase Locked Loop requires no more than 1000 CLKIN cycles while RESET is low, assuming stable VDD and CLKIN (not including clock oscillator start-up time). 2. Specification only applies in cases where multiple TSC21020F processors are required to execute in program counter lock-step (all processors start execution at location 8 in the same cycle). See the Hardware Configuration chapter of the ADSP-21020 User’s Manual from Analog Devices for reset sequence information. Figure 4. Reset Interrupts Parameter 20 MHz Frequency Dependency* Unit Min Timing Requireent tSIR tHIR tIPW IRQ3-0 Setup before CLKIN High IRQ3-0 Hold after CLKIN High IRQ3-0 Pulse Width 38 0 55 38 + 3DT/4 tCK + 5 ns ns ns NOTES * DT = tCK – 50 ns Meeting setup and hold guarantees interrupts will be latched in that cycle. Meeting the pulse width is not necessary if the setup and hold is met. Likewise, meeting the setup and hold is not necessary if the pulse width is met. See the Hardware Configuration chapter of the ADSP-21020 User’s Manual from Analog Devices for interrupt servicing information. Figure 5. Interrupts 18 Rev. E – Oct. 05, 1998 TSC21020F Timer 20 MHz Parameter Max Frequency Dependency* Min Unit Max Switching Characteristic : tDTEX CLKIN High to TIMEXP 24 ns NOTES * DT = tCK – 50 ns Figure 6. TIMEXP 19 Rev. E – Oct. 05, 1998 TSC21020F Flags Frequency Dependency* 20 MHz Parameter Min Max Min Unit Max Timing Requirement 1 tSFI tHFI tDWRFI tHFIWR FLAG3-0IN Setup before CLKIN High FLAG3-0IN Hold after CLKIN High FLAG3-0IN Delay from xRD, xWR Low FLAG3-0IN Hold after xRD, xWR Deasserted Switching Characteristic tDFO FLAG3-0OUT Delay from CLKIN High tHFO FLAG3-0OUT Hold after CLKIN High tDFOE CLKIN High to FLAG3-0OUT Enable(2) tDFOD CLKIN High to FLAG3-0OUT Disable 19 0 19 + 5DT/16 12 + 7DT/16 12 0 24 ns ns ns ns ns ns ns ns 5 1 24 NOTES * DT = tCK – 50 ns 1. Flag inputs meeting these setup and hold times will affect conditional operations in the next instruction cycle. See the Hardware Configuration chapter of the ADSP-21020 User’s Manual from Analog Devices for additional flag servicing information. 2. guaranteed by design Figure 7. Flags 20 Rev. E – Oct. 05, 1998 TSC21020F Bus Request/Bus Grant Frequency Dependency* 20 MHz Parameter Min Max Min Unit Max Timing Requirement tHBR tSBR BR Hold after CLKIN High BR Setup before CLKIN High 0 18 18+5DT/16 ns ns –2 25 25 + DT/2 ns ns Switching Characteristic tDMDBGL Memory Interface Disable to BG Low(1) tDME CLKIN High to Memory Interface Enable tDBGL CLKIN High to BG Low tDBGH CLKIN High to BG High 22 22 ns ns NOTES * DT = tCK – 50 ns Memory Interface = PMA23-0, PMD47-0, PMS1-0, PMRD, PMWR, PMPAGE, DMA31-0, DMD39-0, DMS3-0, DMRD, DMWR, DMPAGE. Buses are not granted until completion of current memory access. See the Memory Interface chapter of the ADSP-21020 User’s Manual from Analog Devices for BG, BR cycle relationships. 1. guaranteed by design Figure 8. Bus Request/Bus Grant 21 Rev. E – Oct. 05, 1998 TSC21020F External Memory Three-State Control Frequency Dependency* 20 MHz Parameter Min Max Min Max 14 50 28 16 14 +DT/4 tCK 28 + 7DT/8 16 + DT/2 Unit Timing Requirement tSTS tDADTS tDSTS xTS, Setup before CLKIN High xTS Delay after Address, Select xTS Delay after XRD, XWR Low ns ns ns Switching Characteristic tDTSD tDTSAE Memory Interface Disable before CLKIN High xTS High to Address, Select Enable 0 DT/4 0 ns ns NOTES * DT = tCK – 50 ns xTS should only be asserted (low) during an active memory access cycle. Memory Interface = PMA23-0, PMD47-0, PMS1-0, PMRD, PMWR, PMPAGE, DMA31-0, DMD39-0, DMS3-0, DMRD, DMWR, DMPAGE. Address = PMA23-0, DMA31-0, Select = PMS1-0, DMS3-0. x = PM or DM. Figure 9. External Memory Three-State Control 22 Rev. E – Oct. 05, 1998 TSC21020F Memory Read Frequency Dependency* 20 MHz Parameter Min Max Min Unit Max Timing Requirement tDAD tDRLD tHDA tHDRH tDAAK tDRAK tSAK tHAK Address, Select to Data Valid xRD Low to Data Valid Data Hold from Address, Select Data Hold from xRD High xACK Delay from Address xACK Delay from xRD Low xACK Setup before CLKIN High xACK Hold after CLKIN High 37 24 37 + DT 24 + 5DT/8 27 15 27 + 7DT/8 15 + DT/2 0 –1 14 0 14 + DT/4 ns ns ns ns ns ns ns ns Switching Characteristic tDARL tDAP tDCKRL tRW tRWR Address, Select to xRD Low xPAGE Delay from Address, Select CLKIN High to xRD Low xRD Pulse Width xRD High to xRD, xWR Low 8 16 26 17 8 + 3DT/8 1 26 16 + DT/4 26 + 5DT/8 17 + 3DT/8 26 + DT/4 ns ns ns ns ns NOTES * DT = tCK – 50 ns x = PM or DM ; Address = PMA23-0, DMA31-0 ; Data = PMD47-0, DMD39-0 ; Select = PMS1-0, DMS3-0. Figure 10. Memory Read 23 Rev. E – Oct. 05, 1998 TSC21020F Memory Write Frequency Dependency* 20 MHz Parameter Min Max Min Unit Max Timing Requirement tDAAK tDWAK tSAK tHAK xACK Delay from Address, Select xACK Delay from xWR Low xACK Setup before CLKIN High xACK Hold after CLKIN High 27 15 27 + 7DT/8 15 + DT/2 ns ns ns ns 14 0 14 + DT/4 37 11 26 23 37 + 15DT/16 11 + 3DT/8 26 + 9DT/16 23 + DT/2 ns ns ns ns 1 0 1 + DT/16 DT/16 ns ns ns ns ns Switching Characteristic tDAWH tDAWL tWW tDDWH tDWHA Address, Select to xWR Deasserted Address, Select to xWR Low xWR Pulse Width Data Setup before xWR High Address, Select Hold after xWR Deasserted tHDWH Data Hold after xWR Deasserted1 tDAP xPAGE Delay from Address, Select tDCKWL CLKIN High to xWR Low tWWR xWR High to xWR or xRD Low tDDWR Data Disable before xWR or xRD Low tWDE xWR Low to Data Enabled 16 17 1 26 13 0 16 + DT/4 17 + 7DT/16 26 + DT/4 13 + 3DT/8 DT/16 ns ns NOTES * DT = tC – 50 ns 1. See “System Hold Time Calculation” in “Test Conditions” section for calculating hold times given capacitive and DC loads. x = PM or DM ; Address = PMA23-0, DMA31-0 ; Data = PMD47-0, DMD39-0 ; Select = PMS1-0, DMS3-0; guaranteed by design. Figure 11. Memory Write 24 Rev. E – Oct. 05, 1998 TSC21020F IEEE 1149.1 Test Access Port 20 MHz Parameter Min Max Frequency Dependency* Min Unit Max Timing Requirement tTCK tSTAP tHTAP tSSYS tHSYS tTRSTW TCK Period TDI, TMS Setup before TCK High TDI, TMS Hold after TCK High System Inputs Setup before TCK High System Inputs Hold after TCK High TRST Pulse Width 50 5 6 7 9 200 tCK ns ns ns ns ns ns Switching Characteristic tDTDO tDSYS TDO Delay from TCK Low System Outputs Delay from TCK Low 15 26 ns ns NOTES * DT = tCK – 50 ns System Inputs = PMD47-0, PMACK, PMTS, DMD39-0, DMACK, DMTS, CLKIN, IRQ3-0, RESET, FLAG3-0, BR. System Outputs = PMA23-0, PMS1-0, PMRD, PMWR, PMD47-0, PMPAGE, DMA31-0, DMS3-0, DMRD, DMWR, DMPAGE, FLAG3-0, BG, TIMEXP. See the IEEE 1149.1 Test Access Port chapter of the ADSP-21020 User’s Manual from Analog Devices for further detail. Figure 12. IEEE 1149.1 Test Access Port 25 Rev. E – Oct. 05, 1998 TSC21020F Figure 13. Output Enable/Disable Test Conditions Output Disable Time Output pins are considered to be disable when they stop driving, go into a high-impedance state, and start to decay from their output high or low voltage. The time for the voltage on the bus to decay by ∆V is dependent on the capacitive load, CL, and the load current, IL. It can be approximated by the following equation : C L DV IL The output disable time (tDIS) is the difference between tMEASURED and tDECAY as shown in Figure 13. The time tMEASURED is the interval from when the reference signal switches to when the output voltage decays ∆V from the measured output high or output low voltage. tDECAY is calculated with ∆V equal to 0.5 V, and test loads CL and IL. interval from when a reference signal reaches a high or low voltage level to when the output has reached a specified high or low trip point, as shown in the Output Enable /Disable diagram. If multiple pins (such as the data bus) are enabled, the measurement value is that of the first pin to start driving. Figure 14. Equivalent Device Loading for AC Measurements (Includes all Fixtures) t DECAY + Output Enable Time Output pins are considered to be enabled when they have made a transition from a high-impedance state to when they start driving. The output enable time (tENA) is the 26 Rev. E – Oct. 05, 1998 TSC21020F Example System Hold Time Calculation Figure 15. Voltage Reference Levels for AC Measurements (Except Output Enable/Disable) 5 4.8 RISE TIME – ns (0.8V – 2.0V) To determine the data output hold time in a particular system, first calculate tDECAY using the above equation. Choose ∆V to be the difference between the TSC21020F’s output voltage and the input threshold for the device requiring the hold time. A typical ∆V will be 0.4 V. CL is the total bus capacitance (per data line), and IL is the total leakage or three-state current (per data line). The hold time will be tDECAY plus the minimum disable time (i.e. tHDWD for the write cycle). Figure 17. Typical Output Rise Time vs. Load Capacitance (at Maximum Case Temperature) 4 3 (1) 2 1 1 0 25 50 75 100 125 150 175 200 LOAD CAPACITANCE – pF Capacitive Loading Figures 16 and 17 show how the output rise time varies with capacitance. Figures 18 and 19 show how output delays vary with capacitance. Note that the graphs may not be linear outside the ranges shown. Figure 16. Typical Output Rise Time vs. Load Capacitance (at Maximum Case Temperature) 10 9.9 RISE TIME – ns (0.8V – 2.0V) 9 Note: (1) OUTPUT PINS PMA23–0, PMS1–0, PMPAGE, DMA31–0, DMS3–0, DMPAGE, TDO, PMRD, PMWR, DMRD, DMWR Figure 18. Typical Output Delay or Hold vs. Load Capacitance (at Maximum Case Temperature) 12 OUTPUT DELAY OR HOLD – ns Output delays are based on standard capacitive loads : 100 pF on address, select, page and strobe pins, and 50 pF on all others (see Figure 14). For different loads, these timing parameters should be derated. See the Hardware Configuration chapter of the ADSP-21020 User’s Manual from Analog Devices for further information on derating of timing specifications. 10 8.3 8 6 4 (1) 2 0 –1.7 –2 8 25 7 50 75 100 125 150 175 200 LOAD CAPACITANCE – pF 6 Note: (1) OUTPUT PINS BG, TIMEXP, FLAG3–0, PMD47–0, DMD39–0 (1) 5 4 3 2 1.6 1 0 25 50 75 100 125 150 175 200 LOAD CAPACITANCE –pF Note: (1) OUTPUT PINS DMD39–0, FLAG3–0 BG, TIMEXP, PMD47–0, 27 Rev. E – Oct. 05, 1998 TSC21020F Figure 19. Typical Output Delay or Hold vs. Load Capacitance (at Maximum Case Temperature) OUTPUT DELAY OR HOLD – ns 4 package (Ceramic). The package uses a cavity-up configuration. Table 9 : Maximum θCA for Various Airflow Values Airflow (m/s) 3 2.8 2 0 0.5 1 1.5 MQFPF 31.5°C/W 25°C/W 21.5°C/W 19°C/W CPGA 14.5°C/W 11.2°C/W 8.8°C/W 7.8°C/W NOTES θJC is 1°C/W for CPGA. θJC is 0.3°C/W for MQFPF. Maximum recommended TJ is 130°C. As per method 1012 MIL-STD-883. Ambient temperature : 25°C. Power : 3.5 W. 1 (1) 0 –1 –2 –2.2 Power Dissipation –3 25 50 75 100 125 150 175 200 LOAD CAPACITANCE – pF Note: (1) OUTPUT PINS PMA–23, PMS1–0, PMPAGE, DMA31–0, DMS3–0, DMPAGE, TDO, PMRD, PMWR, DMRD, DMWR Environmental Conditions The TSC21020F is available in a Ceramic Pin Grid Array (CPGA) and in a multilayer quad flat package with flat leads (MQFPF). The CPGA package uses a cavity-down configuration which gives it favorable thermal characteristics. The top surface of the package contains a raised copper slug from which much of the die heat is dissipated. The slug provides a surface for mounting a heat sink (if required). The military range TSC21020F is specified for operation at TAMB of –55°C to + 125°C. Maximum TCASE (case temperature) can be calculated from the following equation : TCASE = TAMB + (PD × θCA ) where PD is power dissipation and θCA is the case-to-ambient thermal resistance. The value of PD depends on your application ; the method for calculating PD is shown under “Power Dissipation” below. θCA varies with airflow. Table 9 shows a range of θCA values. The TSC 21020F is also available in a 256-pin MQFPF Total power dissipation has two components : one due to internal circuitry and one due to the switching of external output drivers. Internal power dissipation is dependent on the instruction execution sequence and the data values involved. Internal power dissipation is calculated in the following way : PINT = IDDIN × VDD The external component of total power dissipation is caused by the switching of output pins. Its magnitude depends on : 1) the number of output pins that switch during each cycle (O), 2) the maximum frequency at which they can switch (f), 3) their load capacitance (C), and 4) their voltage swing (VDD). It is calculated by : PEXT = O × C × VDD2 × f The load capacitance should include the processor’s package capacitance (CIN). The switching frequency includes driving the load high and then back low. Address and data pins can drive high and low at a maximum rate of 1/(2tCK). The write strobes can switch every cycle at a frequency of 1/tCK. Select pins switch at 1/(2tCK), but 2 DM and 2 PM selects can switch on each cycle. If only one bank is accessed, no select line will switch. 28 Rev. E – Oct. 05, 1998 TSC21020F Example : Estimate PEXT with the following assumptions : D A system with one RAM bank each of PM (48 bits) and DM (32 bits). D 32 K × 8 RAM chips are used, each with a load of 10 pF. D Single-precision mode is enabled so that only 32 data pins can switch at once. D PM and DM writes occur every other cycle, with 50 % of the pins switching. D The instruction cycle rate is 20 MHz (tCK = 50 ns) and VDD = 5.0 V. The PEXT equation is calculated for each class of pins that can drive : Pin Type # Pins % Switch ×C ×f ×VDD2 PEXT PMA PMS PMWR PMD DMA DMS DMWR DMD 15 2 1 32 15 2 1 32 50 0 – 50 50 0 – 50 68 pF 68 pF 68 pF 18 pF 48 pF 48 pF 48 pF 18 pF 5 MHz 5 MHz 10 MHz 5 MHz 5 MHz 5 MHz 10 MHz 5 MHz 25 V 25 V 25 V 25 V 25 V 25 V 25 V 25 V 0.064 W 0.000 W 0.017 W 0.036 W 0.045 W 0.000 W 0.012 W 0.036 W PEXT = 0.210 W A typical power consumption can now be calculated for this situation by adding a typical internal power dissipation : PTOTAL = PEXT + (5 V × IDDIN (typ)) = 0.210 + 1.15 = 1.36 W Note that the conditions causing a worst case PEXT are different from those causing a worst case PINT. Maximum PINT cannot occur while 100 % of the output pins are switching from all ones to all zeros. Also note that it is not common for a program to have 100 % or even 50 % of the outputs switching simultaneously. Power and Ground Guidelines To achieve its fast cycle time, including instruction fetch, data access, and execution, the TSC21020F is designed with high speed drivers on all output pins. Large peak currents may pass through a circuit board’s ground and power lines, especially when many output drivers are simultaneously charging or discharging their load capacitances. These transient currents can cause disturbances on the power and ground lines. To minimize these effects, the TSC21020F provides separate supply pins for its internal logic (IGND and IVDD) and for its external drivers (EGND and EVDD). All GND pins should have a low impedance path to ground. A ground plane is required in TSC21020F systems to reduce this impedance, minimizing noise. The EVDD and IVDD pins should be bypassed to the ground plane using approximately 14 high-frequency capacitors (0.1 µF ceramic). Keep each capacitor’s lead and trace length to the pins as short as possible. This low inductive path provides the TSC21020F with the peak currents required when its output drivers switch. The capacitors’ ground leads should also be short and connect directly to the ground plane. This provides a low impedance return path for the load capacitance of the TSC21020F’s output drivers. If a VDD plane is not used, the following recommendations apply. Traces from the + 5 V supply to the 10 EVDD pins should be designed to satisfy the minimum VDD specification while carrying average dc currents of [IDDEX/10 × (number of EVDD pins per trace)]. IDDEX is the calculated external supply current. A similar calculation should be made for the four IVDD pins using the IDDIN specification. The traces connecting + 5 V to the IVDD pins should be separate from those connecting to the EVDD pins. A low frequency bypass capacitor (20 µF tantalum) located near the junction of the IVDD and EVDD traces is also recommended. Target System Requirements For Use Of EZ-ICE Emulator The ADSP-21020 EZ-ICE uses the IEEE 1149.1 JTAG test access port of the TSC21020F to monitor and control the target board processor during emulation. The EZ-ICE probe requires that CLKIN, TMS, TCK, TRST, TDI, TDO, and GND be made accessible on the target system via a 12-pin connector (pin strip header) such as that shown in Figure 20. The EZ-ICE probe plugs directly onto this connector for chip-on-board emulation ; you must add this connector to your target board design if you intend to use the ADSP-21020 EZ-ICE. Figure 21 shows the dimensions of the EZ-ICE probe ; be sure to allow 29 Rev. E – Oct. 05, 1998 TSC21020F enough space in your system to fit the probe onto the 12-pin connector. must be 0.025 inch square and at least 0.20 inch in length. Pin spacing is 0.1 × 0.1 inches. Figure 20. Target Board Connector for EZ-ICE Emulator (Jumpers In Place) The tip of the pins must be at least 0.10 inch higher than the tallest component under the probe to allow clearance for the bottom of the probe. Pin strip headers are available from vendors such as 3M, Mc Kenzie, and Samtec. The length of the traces between the EZ-ICE probe connector and the TSC21020F test access port pins should be less than 1 inch. Note that the EZ-ICE probe adds two TTL loads to the CLKIN pin of the TSC21020F. The BMTS, BTCK, BTRST, and BTDI signals are provided so that the test access port can also be used for board-level testing. When the connector is not being used for emulation, place jumpers between the BXXX pins and the XXX pins as shown in Figure 20. If you are not going to use the test access port for board test, tie BTRST to GND and tie or pull up BTCK to VDD. The TRST pin must be asserted (pulsed low) after power up (through BTRST on the connector) or held low for proper operation of the TSC21020F. Figure 21. EZ-ICE Probe The 12-pin, 2-row pin strip header is keyed at the Pin 1 location – you must clip Pin 1 off of the header. The pins 30 Rev. E – Oct. 05, 1998 TSC21020F 31 Rev. E – Oct. 05, 1998 TSC21020F 32 Rev. E – Oct. 05, 1998 TSC21020F PGA LOCATION G16 G17 F18 F17 F16 F15 E18 E17 E16 D18 E15 D17 D16 C18 C17 D15 B18 B17 C16 D14 C15 B16 A16 D13 C14 B15 B14 D12 C13 A14 B13 C12 H3 H4 E2 G3 D1 D2 F3 C1 C2 F4 E3 D3 B1 E4 B2 C3 A2 D4 B3 A4 C4 B4 D5 A6 C5 PIN NAME DMA0 DMA1 DMA2 DMA3 DMA4 DMA5 DMA6 DMA7 DMA8 DMA9 DMA10 DMA11 DMA12 DMA13 DMA14 DMA15 DMA16 DMA17 DMA18 DMA19 DMA20 DMA21 DMA22 DMA23 DMA24 DMA25 DMA26 DMA27 DMA28 DMA29 DMA30 DMA31 DMD0 DMD1 DMD2 DMD3 DMD4 DMD5 DMD6 DMD7 DMD8 DMD9 DMD10 DMD11 DMD12 DMD13 DMD14 DMD15 DMD16 DMD17 DMD18 DMD19 DMD20 DMD21 DMD22 DMD23 DMD24 PGA LOCATION B5 B6 D6 C6 A8 C7 D7 B7 B8 A10 C8 D8 B9 C9 B10 D10 C11 A12 B11 T13 S11 B12 S12 T12 L17 M18 M15 M16 M17 N17 N16 N15 P18 P17 R17 S18 P15 P16 S17 R16 R15 U18 S16 T17 U17 R14 S15 T16 F2 F1 J3 H2 H1 J2 K4 K3 K2 PIN NAME DMD25 DMD26 DMD27 DMD28 DMD29 DMD30 DMD31 DMD32 DMD33 DMD34 DMD35 DMD36 DMD37 DMD38 DMD39 DMS0 DMS1 DMS2 DMS3 DMWR DMRD DMPAGE DMTS DMACK PMA0 PMA1 PMA2 PMA3 PMA4 PMA5 PMA6 PMA7 PMA8 PMA9 PMA10 PMA11 PMA12 PMA13 PMA14 PMA15 PMA16 PMA17 PMA18 PMA19 PMA20 PMA21 PMA22 PMA23 PMD0 PMD1 PMD2 PMD3 PMD4 PMD5 PMD6 PMD7 PMD8 PGA LOCATION K1 L3 L2 M1 M2 M3 M4 N2 N3 P1 P2 N4 S1 P3 R2 P4 R3 S2 T1 S3 R4 T2 U1 T3 R5 S4 U2 S5 T4 R6 U3 U4 S6 T6 S7 U6 T7 R8 S8 R13 T15 U8 S9 S14 T8 U10 A17 A18 H16 H15 H17 G18 J17 J16 K16 K15 R10 PIN NAME PMD9 PMD10 PMD11 PMD12 PMD13 PMD14 PMD15 PMD16 PMD17 PMD18 PMD19 PMD20 PMD21 PMD22 PMD23 PMD24 PMD25 PMD26 PMD27 PMD28 PMD29 PMD30 PMD31 PMD32 PMD33 PMD34 PMD35 PMD36 PMD37 PMD38 PMD39 PMD40 PMD41 PMD42 PMD43 PMD44 PMD45 PMD46 PMD47 PMS0 PMS1 PMWR PMRD PMPAGE PMTS PMACK BG BR FLAG0 FLAG1 FLAG2 FLAG3 IRQ0 IRQ1 IRQ2 IRQ3 RESET PGA LOCATION L16 U12 T11 T14 R12 S13 U16 U14 H18 A3 A7 A11 A15 E1 G1 L1 L18 R1 R18 T18 U5 U7 U11 U15 D11 G4 G15 L4 L15 R7 R11 A5 A9 A13 J1 J18 N1 N18 U9 U13 K18 D9 J4 J15 R9 C10 S10 T10 T9 K17 T5 G2 PIN NAME TIMEXP RCOMP CLKIN TRST TD0 TDI TMS TCK EGND EGND EGND EGND EGND EGND EGND EGND EGND EGND EGND EGND EGND EGND EGND EGND IGND IGND IGND IGND IGND IGND IGND EVDD EVDD EVDD EVDD EVDD EVDD EVDD EVDD EVDD EVDD IVDD IVDD IVDD IVDD NC NC NC NC NC NC NC 33 Rev. E – Oct. 05, 1998 TSC21020F MQFP_F LOCATION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 PIN NAME IGND IVDD DMD19 DMD18 DMD17 DMD16 EGND DMD15 DMD14 DMD13 DMD12 EVDD DMD11 DMD10 DMD9 DMD8 IGND IVDD EGND DMD7 DMD6 DMD5 DMD4 EVDD DMD3 DMD2 DMD1 DMD0 EGND PMD0 PMD1 PMD2 IGND IVDD PMD3 EVDD PMD4 PMD5 PMD6 PMD7 EGND PMD8 PMD9 PMD10 PMD11 EVDD PMD12 PMD13 IGND IVDD PMD14 PMD15 EGND PMD16 PMD17 PMD18 PMD19 EVDD PMD20 PMD21 PMD22 PMD23 EGND PMD24 MQFP_F LOCATION 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 PIN NAME IGND IVDD PMD25 PMD26 PMD27 EVDD PMD28 PMD29 PMD30 PMD31 EGND PMD32 PMD33 PMD34 PMD35 EVDD IGND IVDD PMD36 PMD37 PMD38 PMD39 EGND PMD40 PMD41 PMD42 PMD43 EVDD PMD44 PMD45 PMD46 PMD47 IGND IVDD EGND PMTS PMWR PMACK PMRD RCMP EVDD RESET CLKIN DMRD DMACK DMWR EVDD DMTS IGND IVDD TCK TMS TDI TDO TRST PMPAGE PMS0 PMS1 EGND PMA23 PMA22 PMA21 PMA20 EVDD MQFP_F LOCATION 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 PIN NAME IGND IVDD PMA19 PMA18 PMA17 PMA16 EGND PMA15 PMA14 PMA13 PMA12 EVDD PMA11 PMA10 PMA9 PMA8 IGND IVDD EGND PMA7 PMA6 PMA5 PMA4 EVDD PMA3 PMA2 PMA1 PMA0 EGND TIMEXP EVDD EGND IGND IVDD IRQ3 IRQ2 IRQ1 IRQ0 EVDD FLAG0 FLAG1 FLAG2 FLAG3 EGND DMA0 DMA1 DMA2 DMA3 IGND IVDD EVDD DMA4 DMA5 DMA6 DMA7 EGND DMA8 DMA9 DMA10 DMA11 EVDD DMA12 DMA13 DMA14 MQFP_F LOCATION 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 PIN NAME IGND IVDD DMA15 EGND DMA16 DMA17 DMA18 DMA19 EVDD DMA20 DMA21 DMA22 DMA23 EGND DMA24 DMA25 IGND IVDD DMA26 DMA27 EVDD DMA28 DMA29 DMA30 DMA31 EGND DMPAGE BR BG DMS0 DMS1 EVDD IGND IVDD DMS2 DMS3 DMD39 DMD38 EGND DMD37 DMD36 DMD35 DMD34 EVDD DMD33 DMD32 DMD31 DMD30 IGND IVDD EGND DMD29 DMD28 DMD27 DMD26 EVDD DMD25 DMD24 DMD23 EGND DMD22 DMD21 DMD20 EVDD 34 Rev. E – Oct. 05, 1998 TSC21020F 223-pin Ceramic Pin Grid Array Bottom View MM SYMBOL A MIN 2.54 C INCHES MAX MIN 3.30 .100 2.54 BSC MAX .130 .100 BSC D 46.74 47.75 1.840 1.880 E 46.74 47.75 1.840 1.880 H 0.41 0.51 0.16 0.20 L 3.05 3.56 .120 .140 Q 1.14 1.40 0.45 .055 35 Rev. E – Oct. 05, 1998 TSC21020F 256-pin MQFP-F Package TOP VIEW MILS SYMBOL MM MIN MAX MIN MAX A 0.095 0.125 2.41 3.18 C 0.004 0.008 0.10 0.20 D 2.095 2.195 53.23 55.74 D1 1.450 1.470 36.83 37.34 E 2.095 2.195 53.23 55.74 E1 1.450 1.470 36.83 37.34 e 0.020 BSC 0.508 BSC f 0.006 0.010 0.15 0.25 A1 0.081 0.101 2.06 2.56 A2 0.002 0.014 0.05 0.36 L 0.323 0.362 8.20 9.20 N1 64 64 N2 64 64 36 Rev. E – Oct. 05, 1998 TSC21020F Ordering information TSC 21020F – 20 M A /883 Packaging A: 223P PGA B: 256L MQFP–F C: Die Form Temperature Range M: Military –55C to 125C S: Spatial –55C to 125C – 20: 20 MHz version Part number From ADSP–21020 (Analog Devices) F: Radiation Tolerant –E: Engineering Sample Blank: Standard Military /883: MIL 883 Compliant B or S P883: MIL 883 Compliant B+ PIND Test SB: SCC9000 Level B SC: SCC9000 Level C SL3: LAT3 SL2: LAT2 SL1: LAT1 Hxxx: Customer Code 37 Rev. E – Oct. 05, 1998