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SUMMARY
Preliminary Technical Data
High performance 32-bit/40-bit floating point processor optimized for high performance automotive audio processing Audio decoder and post processor-algorithm support with 32-bit floating-point implementations Non-volatile memory may be configured to support audio decoders and post processor-algorithms like PCM, Dolby Digital EX, Dolby Prologic IIx, Dolby Digital Plus, Dolby headphone, DTS 96/24, Neo:6, DTS ES, DTS Lossless, MPEG2 AAC, MPEG2 2channel, MP3, WMAPro, and Multichannel encoder. Functions like Bass management, Delay, Speaker equalization, Graphic equalization, Decoder/postprocessor algorithm combination support will vary depending upon the chip version and the system configurations. Please visit www.analog.com
SHARC(R) Processor ADSP-21368
Single-Instruction Multiple-Data (SIMD) computational architecture On-chip memory--2M bit of on-chip SRAM and a dedicated 6M bit of on-chip mask-programmable ROM Code compatible with all other members of the SHARC family The ADSP-21368 is available with a 400 MHz core instruction rate with unique audio centric peripherals such as the Digital Audio Interface, S/PDIF transceiver, serial ports, 8channel asynchronous sample rate converter, precision clock generators and more. For complete ordering information, see Ordering Guide on page 46
JTAG TEST & EMULATION
CORE PROCESSOR
INSTRUCTION CACHE 32 X 48-BIT
4 BLOCKS OF ON-CHIP MEMORY
2MBIT RAM, 6M BIT ROM
EXTERNAL PORT
SDRAM CONTROLLER ASYNCHRONOUS MEMORY INTERFACE MULTIPROCESSOR INTERFACE 8
CONTROL PINS
24 ADDRESS 18 CONTROL 32 DATA
TIMER
3
DAG1 8X4X32
DAG2 8X4X32
PROGRAM SEQUENCER
ADDR
DATA
7
32 32 64 64 IOA(24) PROCESSING ELEMENT (PEX) PROCESSING ELEMENT (PEY) PX REGISTER IOD(32) DMA CONTROLLER
34 CHANNELS
PM ADDRESS BUS DMADDRESS BUS PM DATA BUS DM DATA BUS
IOP REGISTER (MEMORY MAPPED) CONTROL, STATUS, & DATA BUFFERS
MEMORY-TOMEMORY DMA (2)
PWM (16) 4 GPIO FLAGS/ IRQ/TIMEXP
PRECISION CLOCK GENERATORS (4) SRC (8 CHANNELS)
DAI ROUTING UNIT
DPI ROUTING UNIT
SERIAL PORTS (8) INPUT DATA PORT/ PDAP DAI PINS
SPI PORT (2) TWO WIRE INTERFACE DPI PINS
UART (2)
S
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SPDIF (RX/TX)
TIMERS (3)
DIGITAL AUDIO INTERFACE
20
DIGITAL PERIPHERAL INTERFACE
14
I/O PROCESSOR
Figure 1. Functional Block Diagram - Processor Core
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ADSP-21368
KEY FEATURES - PROCESSOR CORE
At 400 MHz (2.5 ns) core instruction rate, the ADSP-21368 performs 2.4 GFLOPS/800 MMACS 2M bit on-chip SRAM (0.75M Bit in blocks 0 and 1, and 250K Bit in blocks 2 and 3) for simultaneous access by the core processor and DMA 6M bit on-chip mask-programmable ROM (3M bit in block 0 and 3M bit in block 1) Dual Data Address Generators (DAGs) with modulo and bitreverse addressing Zero-overhead looping with single-cycle loop setup, providing efficient program sequencing Single Instruction Multiple Data (SIMD) architecture provides: Two computational processing elements Concurrent execution Code compatibility with other SHARC family members at the assembly level Parallelism in busses and computational units allows: Single cycle executions (with or without SIMD) of a multiply operation, an ALU operation, a dual memory read or write, and an instruction fetch Transfers between memory and core at a sustained 6.0G bytes/s bandwidth at 400 MHz core instruction rate
Preliminary Technical Data
Digital Audio Interface (DAI) includes eight serial ports, four Precision Clock Generators, an Input Data Port, an S/PDIF transceiver, an 8-channel asynchronous sample rate converter, and a Signal Routing Unit Digital Peripheral Interface (DPI) includes, three timers, two UARTs, two SPI ports, and a two wire interface port Outputs of PCG's C and D can be driven on to DPI pins Eight dual data line serial ports that operate at up to 50M bits/s on each data line -- each has a clock, frame sync and two data lines that can be configured as either a receiver or transmitter pair TDM support for telecommunications interfaces including 128 TDM channel support for newer telephony interfaces such as H.100/H.110 Up to 16 TDM stream support, each with 128 channels per frame Companding selection on a per channel basis in TDM mode Input data port, configurable as eight channels of serial data or seven channels of serial data and a single channel of up to a 20-bit wide parallel data Signal routing unit provides configurable and flexible connections between all DAI/DPI components 2 Muxed Flag/IRQ lines 1 Muxed Flag/Timer expired line /MS pin 1 Muxed Flag/IRQ /MS pin
INPUT/OUTPUT FEATURES
DMA Controller supports: 34 zero-overhead DMA channels for transfers between ADSP-21368 internal memory and a variety of peripherals 32-bit DMA transfers at core clock speed, in parallel with full-speed processor execution 32-Bit Wide External Port Provides Glueless Connection to both Synchronous (SDRAM) and Asynchronous Memory Devices Programmable wait state options: 2 to 31 SCLK cycles Delay-line DMA engine maintains circular buffers in external memory with tap/offset based reads SDRAM accesses at 166MHz and Asynchronous accesses at 66MHz Shared-memory support allows multiple DSPs to automatically arbitrate for the bus and gluelessly access a common memory device Multiprocessing Support Provides: Glueless Connection for Scalable DSP Multiprocessing Architecture Distributed On-Chip Bus Arbitration for Parallel Bus Connect of Up to Four ADSP-21368s and Global Memory 4 Memory Select lines allows multiple external memory devices
DEDICATED AUDIO COMPONENTS
S/PDIF Compatible Digital Audio receiver/transmitter supports EIAJ CP-340 (CP-1201), IEC-958, AES/EBU standards Left-justified, I2S or right-justified serial data input with 16, 18, 20 or 24-bit word widths (transmitter) Sample Rate Converter (SRC) contains a Serial Input Port, Deemphasis Filter, Sample Rate Converter (SRC) and Serial Output Port providing up to -128db SNR performance. Supports Left Justified, I2S, TDM and Right Justified 24, 20, 18 and 16-bit serial formats (input) Pulse Width Modulation provides: 16 PWM outputs configured as four groups of four outputs supports center-aligned or edge-aligned PWM waveforms ROM Based Security features include: JTAG access to memory permitted with a 64-bit key Protected memory regions that can be assigned to limit access under program control to sensitive code PLL has a wide variety of software and hardware multiplier/divider ratios Dual voltage: 3.3 V I/O, 1.3 V core Available in 256-ball BGA Package (see Ordering Guide on page 46)
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Preliminary Technical Data
TABLE OF CONTENTS
Summary ............................................................... 1 Key Features - Processor Core ................................. 2 Input/Output Features ........................................... 2 Dedicated Audio Components ................................. 2 General Description ................................................. 4 ADSP-21367 Family Core Architecture ...................... 4 SIMD Computational Engine ............................... 4 Independent, Parallel Computation Units ................ 4 Data Register File ............................................... 5 Single-Cycle Fetch of Instruction and Four Operands . 5 Instruction Cache .............................................. 5 Data Address Generators With Zero-Overhead Hardware Circular Buffer Support .................................... 5 Flexible Instruction Set ....................................... 6 ADSP-21367 Memory ............................................ 6 On-Chip Memory .............................................. 6 External Memory .................................................. 6 SDRAM Controller ............................................ 7 Asynchronous Controller .................................... 7 ADSP-21367 Input/Output Features .......................... 7 DMA Controller ................................................ 7 Digital Audio Interface (DAI) ............................... 7 Serial Ports ....................................................... 8 S/PDIF Compatible Digital Audio Receiver/Transmitter and Synchronous/Asynchronous Sample Rate Converter ............................................... 8 Digital Peripheral Interface (DPI) .......................... 8 Serial Peripheral (Compatible) Interface .................. 8 UART Port ...................................................... 8 Timers ............................................................ 9 Two Wire Interface Port (TWI) ............................. 9 Pulse Width Modulation ..................................... 9 ROM Based Security ........................................... 9 System Design ...................................................... 9 Program Booting .............................................. 10 Power Supplies ................................................. 10 Target Board JTAG Emulator Connector ................ 10 Development Tools .............................................. 10 Designing an Emulator-Compatible DSP Board (Target) .............................................. 11 Evaluation Kit .................................................. 11 Additional Information ......................................... 11
ADSP-21368
Pin Function Descriptions ........................................ 12 Address Data Modes ............................................ 14 Boot Modes ....................................................... 14 Core Instruction Rate to CLKIN Ratio Modes ............ 14 ADSP-21367 Specifications ....................................... 15 Recommended Operating Conditions ...................... 15 Electrical Characteristics ....................................... 15 Absolute Maximum Ratings ................................... 16 ESD Sensitivity ................................................... 16 Timing Specifications ........................................... 16 Power-Up Sequencing ....................................... 18 Clock Input .................................................... 19 Clock Signals ................................................... 19 Reset ............................................................. 20 Interrupts ....................................................... 20 Core Timer ..................................................... 21 Timer PWM_OUT Cycle Timing ......................... 21 Timer WDTH_CAP Timing ............................... 22 DAI and DPI Pin to Pin Direct Routing ................. 22 Precision Clock Generator (Direct Pin Routing) ...... 23 Flags ............................................................. 24 SDRAM Interface Timing .................................. 25 External Port Bus Request and Grant Cycle Timing .. 26 Serial Ports ..................................................... 27 Input Data Port ............................................... 30 Parallel Data Acquisition Port (PDAP) .................. 31 Sample Rate Converter--Serial Input Port .............. 32 Sample Rate Converter--Serial Output Port ........... 33 SPDIF Transmitter ........................................... 34 SPDIF Receiver ................................................ 36 SPI Interface--Master ....................................... 38 SPI Interface--Slave .......................................... 39 Universal Asynchronous Receiver-Transmitter (UART) Port--Receive and Transmit Timing ...... 40 JTAG Test Access Port and Emulation .................. 41 Output Drive Currents ......................................... 42 Test Conditions .................................................. 42 Capacitive Loading .............................................. 42 Thermal Characteristics ........................................ 43 Ordering Guide ..................................................... 45
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ADSP-21368
GENERAL DESCRIPTION
The ADSP-21368 SHARC processor is a members of the SIMD SHARC family of DSPs that feature Analog Devices' Super Harvard Architecture. The ADSP-21368 is source code compatible with the ADSP-2126x, and ADSP-2116x, DSPs as well as with first generation ADSP-2106x SHARC processors in SISD (Single-Instruction, Single-Data) mode. The ADSP-21368 is a 32bit/40-bit floating point processors optimized for high performance automotive audio applications with its large on-chip SRAM and mask-programmable ROM, multiple internal buses to eliminate I/O bottlenecks, and an innovative Digital Audio Interface (DAI). As shown in the functional block diagram on page 1, the ADSP-21368 uses two computational units to deliver a significant performance increase over the previous SHARC processors on a range of DSP algorithms. Fabricated in a state-of-the-art, high speed, CMOS process, the ADSP-21368 processor achieves an instruction cycle time of 2.5 ns at 400 MHz. With its SIMD computational hardware, the ADSP-21368 can perform 2.4 GFLOPS running at 400 MHz. Table 1 shows performance benchmarks for the ADSP-21368. Table 1. ADSP-21368 Benchmarks (at 400 MHz)
Benchmark Algorithm Speed (at 400 MHz) 1024 Point Complex FFT (Radix 4, with reversal) 23.25 s FIR Filter (per tap)1 1.25 ns 1 IIR Filter (per biquad) 5.0 ns Matrix Multiply (pipelined) [3x3] x [3x1] 11.25 ns [4x4] x [4x1] 20.0 ns Divide (y/x) 8.75 ns Inverse Square Root 13.5 ns
1
Preliminary Technical Data
* On-Chip mask-programmable ROM (6M bit) * JTAG test access port The block diagram of the ADSP-21368 on page 1 also illustrates the following architectural features: * DMA controller * Eight full duplex serial ports * Two SPI-compatible interface ports * Digital Audio Interface that includes four precision clock generators (PCG), an input data port (IDP), an S/PDIF receiver/transmitter, eight channels asynchronous sample rate converters, eight serial ports, eight serial interfaces, a 20-bit parallel input port, a flexible signal routing unit (SRU), and a Digital Peripheral Interface (DPI)
ADSP-21368 FAMILY CORE ARCHITECTURE
The ADSP-21368 is code compatible at the assembly level with the ADSP-2126x, ADSP-21160 and ADSP-21161, and with the first generation ADSP-2106x SHARC processors. The ADSP21368 shares architectural features with the ADSP-2126x and ADSP-2116x SIMD SHARC processors, as detailed in the following sections.
SIMD Computational Engine
The ADSP-21368 contains two computational processing elements that operate as a Single-Instruction Multiple-Data (SIMD) engine. The processing elements are referred to as PEX and PEY and each contains an ALU, multiplier, shifter and register file. PEX is always active, and PEY may be enabled by setting the PEYEN mode bit in the MODE1 register. When this mode is enabled, the same instruction is executed in both processing elements, but each processing element operates on different data. This architecture is efficient at executing math intensive DSP algorithms. Entering SIMD mode also has an effect on the way data is transferred between memory and the processing elements. When in SIMD mode, twice the data bandwidth is required to sustain computational operation in the processing elements. Because of this requirement, entering SIMD mode also doubles the bandwidth between memory and the processing elements. When using the DAGs to transfer data in SIMD mode, two data values are transferred with each access of memory or the register file.
Assumes two files in multichannel SIMD mode
The ADSP-21368 continues SHARC's industry leading standards of integration for DSPs, combining a high performance 32-bit DSP core with integrated, on-chip system features. The block diagram of the ADSP-21368 on page 1, illustrates the following architectural features: * Two processing elements, each of which comprises an ALU, Multiplier, Shifter and Data Register File * Data Address Generators (DAG1, DAG2) * Program sequencer with instruction cache * PM and DM buses capable of supporting four 32-bit data transfers between memory and the core at every core processor cycle * Three Programmable Interval Timers with PWM Generation, PWM Capture/Pulse width Measurement, and External Event Counter Capabilities * On-Chip SRAM (2M bit)
Independent, Parallel Computation Units
Within each processing element is a set of computational units. The computational units consist of an arithmetic/logic unit (ALU), multiplier, and shifter. These units perform all operations in a single cycle. The three units within each processing element are arranged in parallel, maximizing computational throughput. Single multifunction instructions execute parallel ALU and multiplier operations. In SIMD mode, the parallel ALU and multiplier operations occur in both processing ele-
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Preliminary Technical Data
ments. These computation units support IEEE 32-bit singleprecision floating-point, 40-bit extended precision floatingpoint, and 32-bit fixed-point data formats.
ADSP-21368
sufficient registers to allow the creation of up to 32 circular buffers (16 primary register sets, 16 secondary). The DAGs automatically handle address pointer wraparound, reduce overhead, increase performance, and simplify implementation. Circular buffers can start and end at any memory location.
Data Register File
A general-purpose data register file is contained in each processing element. The register files transfer data between the computation units and the data buses, and store intermediate results. These 10-port, 32-register (16 primary, 16 secondary) register files, combined with the ADSP-2136x enhanced Harvard architecture, allow unconstrained data flow between computation units and internal memory. The registers in PEX are referred to as R0-R15 and in PEY as S0-S15.
Flexible Instruction Set
The 48-bit instruction word accommodates a variety of parallel operations, for concise programming. For example, the ADSP-21368 can conditionally execute a multiply, an add, and a subtract in both processing elements while branching and fetching up to four 32-bit values from memory--all in a single instruction.
Single-Cycle Fetch of Instruction and Four Operands
The ADSP-21368 features an enhanced Harvard architecture in which the data memory (DM) bus transfers data and the program memory (PM) bus transfers both instructions and data (see Figure 1 on page 1). With the ADSP-21368's separate program and data memory buses and on-chip instruction cache, the processor can simultaneously fetch four operands (two over each data bus) and one instruction (from the cache), all in a single cycle.
ADSP-21368 MEMORY
The ADSP-21368 adds the following architectural features to the SIMD SHARC family core.
On-Chip Memory
The ADSP-21368 contains two megabits of internal RAM and six megabits of internal mask-programmable ROM. Each block can be configured for different combinations of code and data storage (see Table 2). Each memory block supports single-cycle, independent accesses by the core processor and I/O processor. The ADSP-21368 memory architecture, in combination with its separate on-chip buses, allow two data transfers from the core and one from the I/O processor, in a single cycle. The ADSP-21368's, SRAM can be configured as a maximum of 64K words of 32-bit data, 128K words of 16-bit data, 42K words of 48-bit instructions (or 40-bit data), or combinations of different word sizes up to three megabits. All of the memory can be accessed as 16-bit, 32-bit, 48-bit, or 64-bit words. A 16-bit floating-point storage format is supported that effectively doubles the amount of data that may be stored on-chip. Conversion between the 32-bit floating-point and 16-bit floating-point formats is performed in a single instruction. While each memory block can store combinations of code and data, accesses are most efficient when one block stores data using the DM bus for transfers, and the other block stores instructions and data using the PM bus for transfers.
Instruction Cache
The ADSP-21368 includes an on-chip instruction cache that enables three-bus operation for fetching an instruction and four data values. The cache is selective--only the instructions whose fetches conflict with PM bus data accesses are cached. This cache allows full-speed execution of core, looped operations such as digital filter multiply-accumulates, and FFT butterfly processing.
Data Address Generators With Zero-Overhead Hardware Circular Buffer Support
The ADSP-21368's two data address generators (DAGs) are used for indirect addressing and implementing circular data buffers in hardware. Circular buffers allow efficient programming of delay lines and other data structures required in digital signal processing, and are commonly used in digital filters and Fourier transforms. The two DAGs of the ADSP-21368 contain Table 2. ADSP-21368 Internal Memory Space
IOP Registers 0x0000 0000 - 0003 FFFF Long Word (64 bits) BLOCK 0 ROM 0x0004 0000-0x0004 BFFF Reserved 0x0004 F000-0x0004 FFFF BLOCK 0 RAM 0x0004 C000-0x0004 EFFF BLOCK 1 ROM 0x0005 0000-0x0005 BFFF
Extended Precision Normal or Normal Word (32 bits) Instruction Word (48 bits) BLOCK 0 ROM 0x0008 0000-0x0008 FFFF Reserved 0x0009 4000-0x0009 FFFF BLOCK 0 RAM 0x0009 0000-0x0009 3FFF BLOCK 1 ROM 0x000A 0000-0x000A FFFF BLOCK 0 ROM 0x0008 0000-0x0009 7FFF Reserved 0x0009 E0000-0x0009 FFFF BLOCK 0 RAM 0x0009 8000-0x0009 DFFF BLOCK 1 ROM 0x000A 0000- 0x000B 7FFF
Short Word (16 bits) BLOCK 0 ROM 0x0010 0000-0x0012 FFFF Reserved 0x0013 C000-0x0013 FFFF BLOCK 0 RAM 0x0013 0000-0x0013 BFFF BLOCK 1 ROM 0x0014 0000-0x0016 FFFF
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ADSP-21368
Table 2. ADSP-21368 Internal Memory Space (Continued)
IOP Registers 0x0000 0000 - 0003 FFFF Long Word (64 bits) Reserved 0x0005 F000-0x0005 FFFF BLOCK 1 RAM 0x0005 C000-0x0005 EFFF BLOCK 2 RAM 0x0006 0000-0x0006 0FFF Reserved 0x0006 1000- 0x0006 FFFF BLOCK 3 RAM 0x0007 0000-0x0007 0FFF Reserved 0x0007 1000- 0x0007 FFFF
Preliminary Technical Data
Extended Precision Normal or Normal Word (32 bits) Instruction Word (48 bits) Reserved 0x000B 4000-0x000B FFFF BLOCK 1 RAM 0x000B 0000-0x000B 3FFF BLOCK 2 RAM 0x000C 0000-0x000C 1554 Reserved 0x000C 1555-0x000C 3FFF BLOCK 3 RAM 0x000E 0000-0x000E 1554 Reserved 0x000E 1555-0x000F FFFF Reserved 0x000B E000- 0x000B FFFF BLOCK 1 RAM 0x000B 8000-0x000B DFFF BLOCK 2 RAM 0x000C 0000-0x000C 1FFF Reserved 0x000C 2000-0x000D FFFF BLOCK 3 RAM 0x000E 0000-0x000E 1FFF Reserved 0x000E 2000-0x000F FFFF
Short Word (16 bits) Reserved 0x0017 C000-0x0017 FFFF BLOCK 1 RAM 0x0017 0000-0x0017 BFFF BLOCK 2 RAM 0x0018 0000-0x0018 3FFF Reserved 0x0018 4000-0x001B FFFF BLOCK 3 RAM 0x001C 0000-0x001C 3FFF Reserved 0x001C 4000-0x001F FFFF
Using the DM bus and PM buses, with one bus dedicated to each memory block, assures single-cycle execution with two data transfers. In this case, the instruction must be available in the cache.
EXTERNAL MEMORY
The External Port on the ADSP-21368 SHARC provides a high performance, glueless interface to a wide variety of industrystandard memory devices. The 32-bit wide bus may be used to interface to synchronous and/or asynchronous memory devices through the use of it's separate internal memory controllers: the first is an SDRAM controller for connection of industry-standard synchronous DRAM devices and DIMMs (Dual Inline Memory Module), while the second is an asynchronous memory controller intended to interface to a variety of memory devices. Four memory select pins enable up to four separate devices to coexist, supporting any desired combination of synchronous and asynchronous device types.
The SDRAM controller address, data, clock, and command pins can drive loads up to 30 pF. For larger memory systems, the SDRAM controller external buffer timing should be selected and external buffering should be provided so that the load on the SDRAM controller pins does not exceed 30 pF.
Asynchronous Controller
The asynchronous memory controller provides a configurable interface for up to four separate banks of memory or I/O devices. Each bank can be independently programmed with different timing parameters, enabling connection to a wide variety of memory devices including SRAM, ROM, and flash EPROM, as well as I/O devices that interface with standard memory control lines. Bank0 occupies a 14.7M word window and banks 1, 2, and 3 occupy a 16M word window in the processor's address space but, if not fully populated, these windows are not made contiguous by the memory controller logic. The banks can also be configured as 8-bit, 16-bit, or 32-bit wide buses for ease of interfacing to a range of memories and I/O devices tailored either to high performance or to low cost and power. The asynchronous memory controller is capable of a maximum throughput of 267M bytes/sec using a 66MHz external bus speed. Other features include 8 to 32-bit and 16 to 32-bit packing and unpacking, booting from Bank Select 1, and support for delay line DMA.
SDRAM Controller
The SDRAM controller provides an interface to up to four separate banks of industry-standard SDRAM devices or DIMMs, at speeds up to fSCLK. Fully compliant with the SDRAM standard, each bank can has it's own memory select line (MS0-MS3), and can be configured to contain between 16M bytes and 128M bytes of memory. The controller maintains all of the banks as a contiguous address space so that the processor sees this as a single address space, even if different size devices are used in the different banks. A set of programmable timing parameters is available to configure the SDRAM banks to support slower memory devices. The memory banks can be configured as either 32 bits wide for maximum performance and bandwidth or 16 bits wide for minimum device count and lower system cost.
Shared External Memory
The ADSP-21368 supports connecting to common shared external memory with other ADSP-21368s to create shared external bus processor systems. This support includes: * Distributed, on-chip arbitration for the shared external bus * Fixed and rotating priority bus arbitration * Bus time-out logic * Bus lock
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Preliminary Technical Data
Multiple processors can share the external bus with no additional arbitration logic. Arbitration logic is included on-chip to allow the connection of up to four processors. Bus arbitration is accomplished through the BR1-4 signals and the priority scheme for bus arbitration is determined by the setting of the RPBA pin. Table 3 on page 12 provides descriptions of the pins used in multiprocessor systems.
ADSP-21368
Programs make these connections using the Signal Routing Unit (SRU, shown in TBD). The SRU is a matrix routing unit (or group of multiplexers) that enables the peripherals provided by the DAI to be interconnected under software control. This allows easy use of the DAI associated peripherals for a much wider variety of applications by using a larger set of algorithms than is possible with non configurable signal paths. The DAI also includes eight serial ports, an S/PDIF receiver/transmitter, four precision clock generators (PCG), eight channels of synchronous sample rate converters, and an input data port (IDP). The IDP provides an additional input path to the ADSP-21368 core, configurable as either eight channels of I2S serial data or as seven channels plus a single 20-bit wide synchronous parallel data acquisition port. Each data channel has its own DMA channel that is independent from the ADSP-21368's serial ports. For complete information on using the DAI, see the ADSP2136x SHARC Processor Hardware Reference.
ADSP-21368 INPUT/OUTPUT FEATURES
The ADSP-21368 I/O processor provides 34 channels of DMA, as well as an extensive set of peripherals. These include a 20 pin Digital Audio Interface which controls: * Eight Serial ports * S/PDIF Receiver/Transmitter * Four Precision Clock generators * Four Sample Rate Converters * Internal Data port/Parallel Data Acquisition port The ADSP-21368 processor also contains a 14 pin Digital Peripheral Interface which controls: * Three general-purpose timers * Two Serial Peripheral Interfaces * Two Universal Asynchronous Receiver/Transmitters (UARTs) * A Two Wire Interface/I2C
Serial Ports
The ADSP-21368 features eight synchronous serial ports that provide an inexpensive interface to a wide variety of digital and mixed-signal peripheral devices such as Analog devices AD183x family of audio codecs, ADCs, and DACs. The serial ports are made up of two data lines, a clock and frame sync. The data lines can be programmed to either transmit or receive and each data line has a dedicated DMA channel. Serial ports are enabled via 16 programmable and simultaneous receive or transmit pins that support up to 32 transmit or 32 receive channels of audio data when all eight SPORTS are enabled, or eight full duplex TDM streams of 128 channels per frame. The serial ports operate at a maximum data rate of 50M bits/s. Serial port data can be automatically transferred to and from on-chip memory via dedicated DMA channels. Each of the serial ports can work in conjunction with another serial port to provide TDM support. One SPORT provides two transmit signals while the other SPORT provides the two receive signals. The frame sync and clock are shared. Serial ports operate in five modes: * Standard DSP serial mode * Multichannel (TDM) mode with support for Packed I2S mode * I2S mode * Packed I2S mode * Left-justified sample pair mode Left-justified sample pair mode is a mode where in each frame sync cycle two samples of data are transmitted/received--one sample on the high segment of the frame sync, the other on the low segment of the frame sync. Programs have control over various attributes of this mode.
DMA Controller
The ADSP-21368's on-chip DMA controller allows data transfers without processor intervention. The DMA controller operates independently and invisibly to the processor core, allowing DMA operations to occur while the core is simultaneously executing its program instructions. DMA transfers can occur between the ADSP-21368's internal memory and its serial ports, the SPI-compatible (Serial Peripheral Interface) ports, the IDP (Input Data Port), the Parallel Data Acquisition Port (PDAP) or the UART. Thirty-four channels of DMA are available on the ADSP-21368--sixteen via the serial ports, eight via the Input Data Port, four for the UARTs, two for the SPI interface, two for the external port, and two for memory-to-memory transfers. Programs can be downloaded to the ADSP-21368 using DMA transfers. Other DMA features include interrupt generation upon completion of DMA transfers, and DMA chaining for automatic linked DMA transfers. Delay Line DMA The ADSP-21368 processor provides Delay Line DMA functionality. This allows processor reads and writes to external Delay Line Buffers (and hence to external memory) with limited core interaction.
Digital Audio Interface (DAI)
The Digital Audio Interface (DAI) provides the ability to connect various peripherals to any of the DSPs DAI pins (DAI_P20-1).
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ADSP-21368
Each of the serial ports supports the left-justified sample pair and I2S protocols (I2S is an industry standard interface commonly used by audio codecs, ADCs and DACs such as the Analog Devices AD183x family), with two data pins, allowing four left-justified sample pair or I2S channels (using two stereo devices) per serial port, with a maximum of up to 32 I2S channels. The serial ports permit little-endian or big-endian transmission formats and word lengths selectable from 3 bits to 32 bits. For the left-justified sample pair and I2S modes, dataword lengths are selectable between 8 bits and 32 bits. Serial ports offer selectable synchronization and transmit modes as well as optional -law or A-law companding selection on a per channel basis. Serial port clocks and frame syncs can be internally or externally generated. The serial ports also contain frame sync error detection logic where the serial ports detect frame syncs that arrive early (for example frame syncs that arrive while the transmission/reception of the previous word is occurring). All the serial ports also share one dedicated error interrupt.
Preliminary Technical Data
porting both master and slave modes. The SPI port can operate in a multimaster environment by interfacing with up to four other SPI compatible devices, either acting as a master or slave device. The ADSP-21368 SPI compatible peripheral implementation also features programmable baud rate and clock phase and polarities. The ADSP-21368 SPI compatible port uses open drain drivers to support a multimaster configuration and to avoid data contention.
UART Port
The ADSP-21368 processor provides a full-duplex Universal Asynchronous Receiver/Transmitter (UART) port, which is fully compatible with PC-standard UARTs. The UART port provides a simplified UART interface to other peripherals or hosts, supporting full-duplex, DMA-supported, asynchronous transfers of serial data. The UART also has multiprocessor communication capability using 9-bit address detection. This allows it to be used in multidrop networks through the RS-485 data interface standard. The UART port also includes support for 5 to 8 data bits, 1 or 2 stop bits, and none, even, or odd parity. The UART port supports two modes of operation: * PIO (Programmed I/O) - The processor sends or receives data by writing or reading I/O-mapped UART registers. The data is double-buffered on both transmit and receive. * DMA (Direct Memory Access) - The DMA controller transfers both transmit and receive data. This reduces the number and frequency of interrupts required to transfer data to and from memory. The UART has two dedicated DMA channels, one for transmit and one for receive. These DMA channels have lower default priority than most DMA channels because of their relatively low service rates. The UART port's baud rate, serial data format, error code generation and status, and interrupts are programmable: * Supporting bit rates ranging from (fSCLK/ 1,048,576) to (fSCLK/16) bits per second. * Supporting data formats from 7 to12 bits per frame. * Both transmit and receive operations can be configured to generate maskable interrupts to the processor. The UART port's clock rate is calculated as: f SCLK UART Clock Rate = -------------------------------------------------16 x UART_Divisor Where the 16-bit UART_Divisor comes from the DLH register (most significant 8 bits) and DLL register (least significant 8 bits). In conjunction with the general-purpose timer functions, autobaud detection is supported.
S/PDIF Compatible Digital Audio Receiver/Transmitter and Synchronous/Asynchronous Sample Rate Converter
The S/PDIF transmitter has no separate DMA channels. It receives audio data in serial format and converts it into a biphase encoded signal. The serial data input to the transmitter can be formatted as left justified, I2S or right justified with word widths of 16, 18, 20, or 24 bits. The serial data, clock, and frame sync inputs to the S/PDIF transmitter are routed through the Signal Routing Unit (SRU). They can come from a variety of sources such as the SPORTs, external pins, the precision clock generators (PCGs), or the sample rate converters (SRC) and are controlled by the SRU control registers. The sample rate converter (SRC) contains four SRC blocks and is the same core as that used in the AD1896 192 kHz Stereo Asynchronous Sample Rate Converter and provides up to 128dB SNR. The SRC block is used to perform synchronous or asynchronous sample rate conversion across independent stereo channels, without using internal processor resources. The four SRC blocks can also be configured to operate together to convert multichannel audio data without phase mismatches. Finally, the SRC is used to clean up audio data from jittery clock sources such as the S/PDIF receiver.
Digital Peripheral Interface (DPI)
The Digital Peripheral Interface provides connections to two serial peripheral interface ports, two universal asynchronous receiver-transmitters (UARTs), a Two Wire Interface (TWI), 12 Flags, and three general-purpose timers.
Serial Peripheral (Compatible) Interface
The ADSP-21368 SHARC processor contains two Serial Peripheral Interface ports (SPIs). The SPI is an industry standard synchronous serial link, enabling the ADSP-21368 SPI compatible port to communicate with other SPI compatible devices. The SPI consists of two data pins, one device select pin, and one clock pin. It is a full-duplex synchronous serial interface, sup-
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Preliminary Technical Data
Timers
The ADSP-21368 has a total of four timers: a core timer that can generate periodic software interrupts and three general purpose timers that can generate periodic interrupts and be independently set to operate in one of three modes: * Pulse Waveform Generation mode * Pulse Width Count /Capture mode * External Event Watchdog mode The core timer can be configured to use FLAG3 as a Timer Expired signal, and each general purpose timer has one bidirectional pin and four registers that implement its mode of operation: a 6-bit configuration register, a 32-bit count register, a 32-bit period register, and a 32-bit pulse width register. A single control and status register enables or disables all three general purpose timers independently.
ADSP-21368
ROM Based Security
The ADSP-21368 has a ROM security feature that provides hardware support for securing user software code by preventing unauthorized reading from the internal code when enabled. When using this feature, the processor does not boot-load any external code, executing exclusively from internal SRAM/ROM. Additionally, the processor is not freely accessible via the JTAG port. Instead, a unique 64-bit key, which must be scanned in through the JTAG or Test Access Port will be assigned to each customer. The device will ignore a wrong key. Emulation features and external boot modes are only available after the correct key is scanned.
SYSTEM DESIGN
The following sections provide an introduction to system design options and power supply issues.
Two Wire Interface Port (TWI)
The TWI is a bi-directional 2-wire, serial bus used to move 8-bit data while maintaining compliance with the I2C bus protocol. The TWI Master incorporates the following features: * Simultaneous Master and Slave operation on multiple device systems with support for multi master data arbitration * Digital filtering and timed event processing * 7 and 10 bit addressing * 100K bits/s and 400K bits/s data rates * Low interrupt rate
Program Booting
The internal memory of the ADSP-21368 boots at system power-up from an 8-bit EPROM via the external port, an SPI master, an SPI slave or an internal boot. Booting is determined by the Boot Configuration (BOOTCFG1-0) pins (see Table 4 on page 14). Selection of the boot source is controlled via the SPI as either a master or slave device, or it can immediately begin executing from ROM.
Power Supplies
The ADSP-21368 has separate power supply connections for the internal (VDDINT), external (VDDEXT), and analog (AVDD/AVSS) power supplies. The internal and analog supplies must meet the 1.3V requirement. The external supply must meet the 3.3V requirement. All external supply pins must be connected to the same power supply. Note that the analog supply (AVDD) powers the ADSP-21368's clock generator PLL. To produce a stable clock, programs should provide an external circuit to filter the power input to the AVDD pin. Place the filter as close as possible to the pin. For an example circuit, see Figure 2. To prevent noise coupling, use a wide trace for the analog ground (AVSS) signal and install a decoupling capacitor as close as possible to the pin. Note that the AVSS and AVDD pins specified in Figure 2 are inputs to the processor and not the analog ground plane on the board. For more information, see Electrical Characteristics on page 15.
Pulse Width Modulation
The PWM module is a flexible, programmable, PWM waveform generator that can be programmed to generate the required switching patterns for various applications related to motor and engine control or audio power control. The PWM generator can generate either center-aligned or edge-aligned PWM waveforms. In addition, it can generate complementary signals on two outputs in paired mode or independent signals in non paired mode (applicable to a single group of four PWM waveforms). The entire PWM module has four groups of four PWM outputs each. Therefore, this module generates 16 PWM outputs in total. Each PWM group produces two pairs of PWM signals on the four PWM outputs. The PWM generator is capable of operating in two distinct modes while generating center-aligned PWM waveforms: single update mode or double update mode. In single update mode the duty cycle values are programmable only once per PWM period. This results in PWM patterns that are symmetrical about the mid-point of the PWM period. In double update mode, a second updating of the PWM registers is implemented at the midpoint of the PWM period. In this mode, it is possible to produce asymmetrical PWM patterns that produce lower harmonic distortion in three-phase PWM inverters.
10 VDDINT 0.1 F 0.01 F AVDD
AVSS
Figure 2. Analog Power (AVDD) Filter Circuit
Target Board JTAG Emulator Connector
Analog Devices DSP Tools product line of JTAG emulators uses the IEEE 1149.1 JTAG test access port of the ADSP-21368 processor to monitor and control the target board processor during
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ADSP-21368
emulation. Analog Devices DSP Tools product line of JTAG emulators provides emulation at full processor speed, allowing inspection and modification of memory, registers, and processor stacks. The processor's JTAG interface ensures that the emulator will not affect target system loading or timing. For complete information on Analog Devices' SHARC DSP Tools product line of JTAG emulator operation, see the appropriate "Emulator Hardware User's Guide".
Preliminary Technical Data
* Perform source level debugging * Create custom debugger windows The VisualDSP++ IDDE lets programmers define and manage DSP software development. Its dialog boxes and property pages let programmers configure and manage all of the SHARC development tools, including the color syntax highlighting in the VisualDSP++ editor. This capability permits programmers to: * Control how the development tools process inputs and generate outputs * Maintain a one-to-one correspondence with the tool's command line switches The VisualDSP++ Kernel (VDK) incorporates scheduling and resource management tailored specifically to address the memory and timing constraints of DSP programming. These capabilities enable engineers to develop code more effectively, eliminating the need to start from the very beginning, when developing new application code. The VDK features include Threads, Critical and Unscheduled regions, Semaphores, Events, and Device flags. The VDK also supports Priority-based, Preemptive, Cooperative, and Time-Sliced scheduling approaches. In addition, the VDK was designed to be scalable. If the application does not use a specific feature, the support code for that feature is excluded from the target system. Because the VDK is a library, a developer can decide whether to use it or not. The VDK is integrated into the VisualDSP++ development environment, but can also be used via standard command line tools. When the VDK is used, the development environment assists the developer with many error-prone tasks and assists in managing system resources, automating the generation of various VDK based objects, and visualizing the system state, when debugging an application that uses the VDK. VisualDSP++ Component Software Engineering (VCSE) is Analog Devices' technology for creating, using, and reusing software components (independent modules of substantial functionality) to quickly and reliably assemble software applications. Download components from the Web and drop them into the application. Publish component archives from within VisualDSP++. VCSE supports component implementation in C/C++ or assembly language. Use the Expert Linker to visually manipulate the placement of code and data on the embedded system. View memory utilization in a color-coded graphical form, easily move code and data to different areas of the processor or external memory with the drag of the mouse, examine run time stack and heap usage. The Expert Linker is fully compatible with the existing Linker Definition File (LDF), allowing the developer to move between the graphical and textual environments. In addition to the software and hardware development tools available from Analog Devices, third parties provide a wide range of tools supporting the SHARC processor family. Hardware tools include SHARC processor PC plug-in cards. Third party software tools include DSP libraries, real-time operating systems, and block diagram design tools.
DEVELOPMENT TOOLS
The ADSP-21368 is supported with a complete set of CROSSCORE(R) software and hardware development tools, including Analog Devices emulators and VisualDSP++(R) development environment. The same emulator hardware that supports other SHARC processors also fully emulates the ADSP-21368. The VisualDSP++ project management environment lets programmers develop and debug an application. This environment includes an easy to use assembler (which is based on an algebraic syntax), an archiver (librarian/library builder), a linker, a loader, a cycle-accurate instruction-level simulator, a C/C++ compiler, and a C/C++ runtime library that includes DSP and mathematical functions. A key point for these tools is C/C++ code efficiency. The compiler has been developed for efficient translation of C/C++ code to DSP assembly. The SHARC has architectural features that improve the efficiency of compiled C/C++ code. The VisualDSP++ debugger has a number of important features. Data visualization is enhanced by a plotting package that offers a significant level of flexibility. This graphical representation of user data enables the programmer to quickly determine the performance of an algorithm. As algorithms grow in complexity, this capability can have increasing significance on the designer's development schedule, increasing productivity. Statistical profiling enables the programmer to non intrusively poll the processor as it is running the program. This feature, unique to VisualDSP++, enables the software developer to passively gather important code execution metrics without interrupting the real-time characteristics of the program. Essentially, the developer can identify bottlenecks in software quickly and efficiently. By using the profiler, the programmer can focus on those areas in the program that impact performance and take corrective action. Debugging both C/C++ and assembly programs with the VisualDSP++ debugger, programmers can: * View mixed C/C++ and assembly code (interleaved source and object information) * Insert breakpoints * Set conditional breakpoints on registers, memory, and stacks * Trace instruction execution * Perform linear or statistical profiling of program execution * Fill, dump, and graphically plot the contents of memory
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Preliminary Technical Data
Designing an Emulator-Compatible DSP Board (Target)
The Analog Devices family of emulators are tools that every DSP developer needs to test and debug hardware and software systems. Analog Devices has supplied an IEEE 1149.1 JTAG Test Access Port (TAP) on each JTAG DSP. Nonintrusive incircuit emulation is assured by the use of the processor's JTAG interface--the emulator does not affect target system loading or timing. The emulator uses the TAP to access the internal features of the processor, allowing the developer to load code, set breakpoints, observe variables, observe memory, and examine registers. The processor must be halted to send data and commands, but once an operation has been completed by the emulator, the DSP system is set running at full speed with no impact on system timing. To use these emulators, the target board must include a header that connects the DSP's JTAG port to the emulator. For details on target board design issues including mechanical layout, single processor connections, signal buffering, signal termination, and emulator pod logic, see the EE-68: Analog Devices JTAG Emulation Technical Reference on the Analog Devices website (www.analog.com)--use site search on "EE-68." This document is updated regularly to keep pace with improvements to emulator support.
ADSP-21368
The USB controller on the EZ-KIT Lite board connects the board to the USB port of the user's PC, enabling the VisualDSP++ evaluation suite to emulate the on-board processor in-circuit. This permits the customer to download, execute, and debug programs for the EZ-KIT Lite system. It also allows in-circuit programming of the on-board Flash device to store user-specific boot code, enabling the board to run as a standalone unit without being connected to the PC. With a full version of VisualDSP++ installed (sold separately), engineers can develop software for the EZ-KIT Lite or any custom defined system. Connecting one of Analog Devices JTAG emulators to the EZ-KIT Lite board enables high-speed, nonintrusive emulation.
ADDITIONAL INFORMATION
This data sheet provides a general overview of the ADSP-21368 architecture and functionality. For detailed information on the ADSP-2136x Family core architecture and instruction set, refer to the ADSP-2136x SHARC Processor Hardware Reference and the ADSP-2136x SHARC Processor Programming Reference.
Evaluation Kit
Analog Devices offers a range of EZ-KIT Lite evaluation platforms to use as a cost effective method to learn more about developing or prototyping applications with Analog Devices processors, platforms, and software tools. Each EZ-KIT Lite includes an evaluation board along with an evaluation suite of the VisualDSP++ development and debugging environment with the C/C++ compiler, assembler, and linker. Also included are sample application programs, power supply, and a USB cable. All evaluation versions of the software tools are limited for use only with the EZ-KIT Lite product.
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ADSP-21368
PIN FUNCTION DESCRIPTIONS
The following symbols appear in the Type column of TBD: A = Asynchronous, G = Ground, I = Input, O = Output, P = Power Supply, S = Synchronous, (A/D) = Active Drive, (O/D) = Open Drain, and T = Three-State, (pd) = pull-down resistor, (pu) = pull-up resistor. Table 3. Pin List
Name Type State During and After Reset Three-state Three-state Three-state Description
Preliminary Technical Data
ADDR23-0 DATA31-0 DAI _P20-1
I/O with programmable PUP1 I/O with programmable PUP I/O with programmable2 PUP
External Address Bus. External Data Bus. Digital Audio Interface Pins. These pins provide the physical interface to the SRU. The SRU configuration registers define the combination of on-chip peripheral inputs or outputs connected to the pin and to the pin's output enable. The configuration registers of these peripherals then determines the exact behavior of the pin. Any input or output signal present in the SRU may be routed to any of these pins. The SRU provides the connection from the Serial ports, Input data port, precision clock generators and timers, sample rate converters and SPI to the DAI_P20-1 pins These pins have internal 22.5 k pull-up resistors which are enabled on reset. These pull-ups can be disabled in the DAI_PIN_PULLUP register. Digital Peripheral Interface. Memory Acknowledge. External devices can deassert ACK (low) to add wait states to an external memory access. ACK is used by I/O devices, memory controllers, or other peripherals to hold off completion of an external memory access. External Port Read Enable. RD is asserted low whenever the processor reads 8-bit or 16-bit data from an external memory device. When AD15-0 are flags, this pin remains deasserted. RD has a 22.5 k internal pull-up resistor. External Port Write Enable. WR is asserted low whenever the processor writes 8-bit or 16-bit data to an external memory device. When AD15-0 are flags, this pin remains deasserted. WR has a 22.5 k internal pull-up resistor. SDRAM Row Address Strobe. Connect to SDRAM's RAS pin. SDRAM column address select. Connect to SDRAM's CAS pin. SDRAM Write Enable. Connect to SDRAM's WE or W buffer pin. SDRAM Clock Enable. Connect to SDRAM's CKE pin. SDRAM A10. SDRAM Clock Configure.
DPI _P14-1 ACK
I/O with programmable3 PUP Input with programmable PUP1 I/O with programmable PUP1 Output with programmable PUP1 Output with programmable PUP1 Output with programmable PUP1 Output with programmable PUP1 Output with programmable PUP1 Output with programmable PUP1 I/O
Three-state
RD
WR
SDRAS SDCAS SDWE SDCKE SDA10 SDCLK0--1
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Preliminary Technical Data
Table 3. Pin List
Name Type State During and After Reset Description
ADSP-21368
MS0-1
I/O with programmable PUP1
Memory Select Lines 0-1. These lines are asserted (low) as chip selects for the corresponding banks of external memory. Memory bank size must be defined in the ADSP-21062's system control register (SYSCON). The MS3-0 lines are decoded memory address lines that change at the same time as the other address lines. When no external memory access is occurring the MS3-0 lines are inactive; they are active however when a conditional memory access instruction is executed, whether or not the condition is true. In a multiprocessing system the MS3-0 lines are output by the bus master. FLAG0/Interrupt Request 0. FLAG1/Interrupt Request 1. FLAG2/Interrupt Request/Memory Select 2.
FLAG[0]/IRQ0 FLAG[1]/IRQ1 FLAG[2]/IRQ2/ MS2 FLAG[3]/TIMEX P/MS3 TDI TDO TMS TCK TRST
I/O I/O I/O with programmable1 pullup (for MS mode) I/O with programmable1 pullup (for MS mode) Input with pull-up Output Input with pull-up Input Input with pull-up
FLAG3/Timer Expired/Memory Select 3.
Test Data Input (JTAG). Provides serial data for the boundary scan logic. TDI has a 22.5 k internal pull-up resistor. Test Data Output (JTAG). Serial scan output of the boundary scan path. Test Mode Select (JTAG). Used to control the test state machine. TMS has a 22.5 k internal pull-up resistor. Test Clock (JTAG). Provides a clock for JTAG boundary scan. TCK must be asserted (pulsed low) after power-up or held low for proper operation of the ADSP-21368. Test Reset (JTAG). Resets the test state machine. TRST must be asserted (pulsed low) after power-up or held low for proper operation of the ADSP-21368. TRST has a 22.5 k internal pull-up resistor. Emulation Status. Must be connected to the ADSP-21368 Analog Devices DSP Tools product line of JTAG emulators target board connector only. EMU has a 22.5 k internal pull-up resistor. Core/CLKIN Ratio Control. These pins set the start up clock frequency. See Table 5 for a description of the clock configuration modes. Note that the operating frequency can be changed by programming the PLL multiplier and divider in the PMCTL register at any time after the core comes out of reset. Boot Configuration Select. This pin is used to select the boot mode for the processor. The BOOTCFG pins must be valid before reset is asserted. See Table 4 for a description of the boot modes. Processor Reset. Resets the ADSP-21368 to a known state. Upon deassertion, there is a 4096 CLKIN cycle latency for the PLL to lock. After this time, the core begins program execution from the hardware reset vector address. The RESET input must be asserted (low) at power-up. Crystal Oscillator Terminal. Used in conjunction with CLKIN to drive an external crystal.
EMU
Output with pull-up
CLK_CFG1-0
Input
BOOT_CFG1-0
Input
RESET
Input
XTAL
Output
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ADSP-21368
Table 3. Pin List
Name Type State During and After Reset Description
Preliminary Technical Data
CLKIN
Local Clock In. Used in conjunction with XTAL. CLKIN is the ADSP-21368 clock input. It configures the ADSP-21368 to use either its internal clock generator or an external clock source. Connecting the necessary components to CLKIN and XTAL enables the internal clock generator. Connecting the external clock to CLKIN while leaving XTAL unconnected configures the ADSP-21368 to use the external clock source such as an external clock oscillator. The core is clocked either by the PLL output or this clock input depending on the CLKCFG1-0 pin settings. CLKIN may not be halted, changed, or operated below the specified frequency. Output Local Clock Out. CLKOUT can also be configured as a reset out pin.The functionality can be switched between the PLL output clock and reset out by setting bit 12 of the PMCTREG register. The default is reset out. External Bus Request. Used by processors to arbitrate for bus mastership. A processor only drives its own BRx line (corresponding to the value of its ID2-0 inputs) and monitors all others. In a system with less than four processors, the unused BRx pins should be tied high; the processor's own BRx line must not be tied high or low because it is an output. Processor ID. Determines which bus request (BR1-BR4) is used by the processor. ID=001 corresponds to BR1, ID=010 corresponds to BR2, and so on. Use ID=000 or 001 in single-processor systems. These lines are a system configuration selection that should be hardwired or only changed at reset. ID=101,110 and 111 are reserved. Output Rotating Priority Bus Arbitration Select. When RPBA is high, rotating priority for external bus arbitration is selected. When RPBA is low, fixed priority is selected. This signal is a system configuration selection which must be set to the same value on every DSP. If the value of RPBA is changed during system operation, it must be changed in the same CLKIN cycle on every DSP.
CLKOUT
BR4-1
Input/Output
ID2-0
RPBA
1 2
Pull-up is always enabled for ID - 000 in uniprocessor mode and ID- 001 in Multiprocessing mode. Pull-up can be enabled/disabled, value of pull-up cannot be programmed. 3 OP is three-statable
ADDRESS/DATA MODES
TBD
BOOT MODES
Table 4. Boot Mode Selection
BOOTCFG1-0 00 01 10 Booting Mode SPI Slave Boot SPI Master Boot AMI boot via EPROM
CORE INSTRUCTION RATE TO CLKIN RATIO MODES
For details on processor timing, see Timing Specifications and Figure 3 on page 17. Table 5. Core Instruction Rate/ CLKIN Ratio Selection
CLKCFG1-0 00 01 10 Core to CLKIN Ratio 6:1 32:1 16:1
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Preliminary Technical Data
ADSP-21368 SPECIFICATIONS
RECOMMENDED OPERATING CONDITIONS
K Grade Parameter1 VDDINT AVDD VDDEXT VIH
2
ADSP-21368
Min Internal (Core) Supply Voltage Analog (PLL) Supply Voltage External (I/O) Supply Voltage High Level Input Voltage @ VDDEXT = max Low Level Input Voltage @ VDDEXT = min High Level Input Voltage @ VDDEXT = max Low Level Input Voltage @ VDDEXT = min Ambient Operating Temperature 1.235 1.235 3.13 2.0 -0.5 1.74 -0.5 0
Max 1.365 1.365 3.47 VDDEXT + 0.5 +0.8 VDDEXT + 0.5 +1.19 +70
Unit V V V V V V V C
VIL2 VIH_CLKIN3 VIL_CLKIN TAMB
1 2
4, 5
Specifications subject to change without notice. Applies to input and bidirectional pins: AD15-0, FLAG3-0, DAI_Px, SPICLK, MOSI, MISO, SPIDS, BOOTCFGx, CLKCFGx, RESET, TCK, TMS, TDI, TRST. 3 Applies to input pin CLKIN. 4 See Thermal Characteristics on page 43 for information on thermal specifications. 5 See Engineer-to-Engineer Note (No. TBD) for further information.
ELECTRICAL CHARACTERISTICS
Parameter1 VOH2 VOL2 IIH4, 5 IIL4 IILPU5 IOZH6, 7 IOZL6 IOZLPU7 IDD-INTYP8, 9 AIDD10 CIN11, 12
1 2
High Level Output Voltage Low Level Output Voltage High Level Input Current Low Level Input Current Low Level Input Current Pull-up Three-State Leakage Current Three-State Leakage Current Three-State Leakage Current Pull-up Supply Current (Internal) Supply Current (Analog) Input Capacitance
Test Conditions @ VDDEXT = min, IOH = -1.0 mA3 @ VDDEXT = min, IOL = 1.0 mA3 @ VDDEXT = max, VIN = VDDEXT max @ VDDEXT = max, VIN = 0 V @ VDDEXT = max, VIN = 0 V @ VDDEXT= max, VIN = VDDEXT max @ VDDEXT = max, VIN = 0 V @ VDDEXT = max, VIN = 0 V tCCLK = 5.0 ns, VDDINT = 1.3 AVDD = max fIN=1 MHz, TCASE=25C, VIN=1.3V
Min 2.4
Max 0.4 10 10 200 10 10 200 500 10 4.7
Unit V V A A A A A A mA mA pF
Specifications subject to change without notice. Applies to output and bidirectional pins: AD15-0, RD, WR, ALE, FLAG3-0, DAI_Px, SPICLK, MOSI, MISO, EMU, TDO, CLKOUT, XTAL. 3 See Output Drive Currents on page 42 for typical drive current capabilities. 4 Applies to input pins: SPIDS, BOOTCFGx, CLKCFGx, TCK, RESET, CLKIN. 5 Applies to input pins with 22.5 k internal pull-ups: TRST, TMS, TDI. 6 Applies to three-statable pins: FLAG3-0. 7 Applies to three-statable pins with 22.5 k pull-ups: AD15-0, DAI_Px, SPICLK, EMU, MISO, MOSI. 8 Typical internal current data reflects nominal operating conditions. 9 See Engineer-to-Engineer Note (No. TBD) for further information. 10 Characterized, but not tested. 11 Applies to all signal pins. 12 Guaranteed, but not tested.
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ADSP-21368
ABSOLUTE MAXIMUM RATINGS
Parameter Internal (Core) Supply Voltage (VDDINT)1 Analog (PLL) Supply Voltage (AVDD)1 External (I/O) Supply Voltage (VDDEXT)1 Input Voltage-0.5 V to VDDEXT1 Output Voltage Swing-0.5 V to VDDEXT1 Load Capacitance1 Storage Temperature Range1 Junction Temperature under Bias
1
Preliminary Technical Data
Rating -0.3 V to +1.5 V -0.3 V to +1.5 V -0.3 V to +4.6 V + 0.5 V + 0.5 V 200 pF -65C to +150C 125C
Stresses greater than those listed above may cause permanent damage to the device. These are stress ratings only; functional operation of the device at these or any other conditions greater than 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.
ESD SENSITIVITY
CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADSP-21368 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
TIMING SPECIFICATIONS
The ADSP-21368's internal clock (a multiple of CLKIN) provides the clock signal for timing internal memory, processor core, serial ports, and parallel port (as required for read/write strobes in asynchronous access mode). During reset, program the ratio between the processor's internal clock frequency and external (CLKIN) clock frequency with the CLKCFG1-0 pins (see Table 5 on page 14). To determine switching frequencies for the serial ports, divide down the internal clock, using the programmable divider control of each port (DIVx for the serial ports). The ADSP-21368's internal clock switches at higher frequencies than the system input clock (CLKIN). To generate the internal clock, the processor uses an internal phase-locked loop (PLL). This PLL-based clocking minimizes the skew between the system clock (CLKIN) signal and the processor's internal clock (the clock source for the parallel port logic and I/O pads). Note the definitions of various clock periods that are a function of CLKIN and the appropriate ratio control (Table 6). Table 6. ADSP-21368 CLKOUT and CCLK Clock Generation Operation
Timing Requirements CLKIN CCLK Description Input Clock Core Clock Calculation 1/tCK 1/tCCLK
Table 7. Clock Periods
Timing Requirements tCK tCCLK tPCLK tSCLK tSDCLK tSPICLK
1
Description1 CLKIN Clock Period (Processor) Core Clock Period (Peripheral) Clock Period = 2 x tCCLK Serial Port Clock Period = (tPCLK) x SR SDRAM Clock Period = (TBD) SPI Clock Period = (tPCLK) x SPIR
where: SR = serial port-to-core clock ratio (wide range, determined by SPORT CLKDIV) SPIR = SPI-to-Core Clock Ratio (wide range, determined by SPIBAUD register) DAI_Px = Serial Port Clock SPICLK = SPI Clock
Figure 3 shows Core to CLKIN ratios of 6:1, 16:1 and 32:1 with external oscillator or crystal. Note that more ratios are possible and can be set through software using the power management control register (PMCTL). For more information, see the ADSP2136x SHARC Processor Programming Reference. 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, it is not meaningful to add parameters to derive longer times. See Figure 35 on page 42 under Test Conditions for voltage reference levels.
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Preliminary Technical Data
CLKOUT CLKIN XTAL XTAL OSC PLLILCLK PLL 6:1, 16:1, 32:1 CCLK (CORE CLOCK) SDCLK (SDRAM CLOCK)
ADSP-21368
Switching Characteristics specify how the processor changes its signals. Circuitry external to the processor must be designed for compatibility with these signal characteristics. Switching characteristics describe what the processor will do in a given circumstance. Use switching characteristics to ensure that any timing requirement of a device connected to the processor (such as memory) is satisfied. Timing Requirements apply to signals that are controlled by circuitry external to the processor, such as the data input for a read operation. Timing requirements guarantee that the processor operates correctly with other devices.
CLK-CFG [1:0]
Figure 3. Core Clock and System Clock Relationship to CLKIN
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ADSP-21368
Power-Up Sequencing
The timing requirements for processor startup are given in Table 8. Table 8. Power Up Sequencing Timing Requirements (Processor Startup)
Parameter Timing Requirements tRSTVDD tIVDDEVDD tCLKVDD1 tCLKRST tPLLRST Min RESET Low Before VDDINT/VDDEXT on VDDINT on Before VDDEXT CLKIN Valid After VDDINT/VDDEXT Valid CLKIN Valid Before RESET Deasserted PLL Control Setup Before RESET Deasserted 0 -50 0 102 203
Preliminary Technical Data
Max
Unit ns ms ms s s
200 200
Switching Characteristic Core Reset Deasserted After RESET Deasserted tCORERST
1
4096tCK + 2 tCCLK 4, 5
Valid VDDINT/VDDEXT assumes that the supplies are fully ramped to their 1.3 and 3.3 volt rails. Voltage ramp rates can vary from microseconds to hundreds of milliseconds depending on the design of the power supply subsystem. 2 Assumes a stable CLKIN signal, after meeting worst-case startup timing of crystal oscillators. Refer to your crystal oscillator manufacturer's datasheet for startup time. Assume a 25 ms maximum oscillator startup time if using the XTAL pin and internal oscillator circuit in conjunction with an external crystal. 3 Based on CLKIN cycles 4 Applies after the power-up sequence is complete. Subsequent resets require a minimum of 4 CLKIN cycles for RESET to be held low in order to properly initialize and propagate default states at all I/O pins. 5 The 4096 cycle count depends on tSRST specification in Table 10. If setup time is not met, 1 additional CLKIN cycle may be added to the core reset time, resulting in 4097 cycles maximum.
RESET
tRSTVDD
VDDINT
tIVDDEVDD
VDDEXT
tCLKVDD
CLKIN
tCLKRST
CLK_CFG1-0
tPLLRST
RSTOUT
tCORERST
Figure 4. Power-Up Sequencing
Rev. PrA |
Page 18 of 48 | November 2004
Preliminary Technical Data
Clock Input
Table 9. Clock Input
Parameter Timing Requirements tCK CLKIN Period tCKL CLKIN Width Low tCKH CLKIN Width High tCKRF CLKIN Rise/Fall (0.4V-2.0V) tCCLK3 CCLK Period
1
ADSP-21368
400 MHz Min 151 61 61 2.5
Unit Max 3202 1502 1502 TBD 10 ns ns ns ns ns
Applies only for CLKCFG1-0 = 00 and default values for PLL control bits in PMCTL. 2 Applies only for CLKCFG1-0 = 01 and default values for PLL control bits in PMCTL. 3 Any changes to PLL control bits in the PMCTL register must meet core clock timing specification tCCLK.
tCK CLKIN tCKH tCKL
Figure 5. Clock Input
Clock Signals
The ADSP-21368 can use an external clock or a crystal. See the CLKIN pin description in TBD. The programmer can configure the ADSP-21368 to use its internal clock generator by connecting the necessary components to CLKIN and XTAL. Figure 6 shows the component connections used for a crystal operating in fundamental mode. Note that the clock rate is achieved using a 16.67 MHz crystal and a PLL multiplier ratio 16:1 (CCLK:CLKIN achieves a clock speed of 266 MHz). To achieve the full core clock rate, programs need to configure the multiplier bits in the PMCTL register.
CLKIN
1M
XTAL
C1
X1
C2
NOTE: C1 AND C2 ARE SPECIFIC TO CRYSTAL SPECIFIED FOR X1. CONTACT CRYSTAL MANUFACTURER FOR DETAILS. CRYSTAL SELECTION MUST COMPLY WITH CLKCFG1-0 = 10 OR = 01.
Figure 6. 400 MHz Operation (Fundamental Mode Crystal)
Rev. PrA |
Page 19 of 48 | November 2004
ADSP-21368
Reset
Table 10. Reset
Parameter Timing Requirements tWRST1 RESET Pulse Width Low tSRST RESET Setup Before CLKIN Low
1
Preliminary Technical Data
Min 4tCK 8
Max
Unit ns ns
Applies after the power-up sequence is complete. At power-up, the processor's internal phase-locked loop requires no more than 100 s while RESET is low, assuming stable VDD and CLKIN (not including start-up time of external clock oscillator).
CLKIN tWRST RESET tSRST
Figure 7. Reset
Interrupts
The following timing specification applies to the FLAG0, FLAG1, and FLAG2 pins when they are configured as IRQ0, IRQ1, and IRQ2 interrupts. Table 11. Interrupts
Parameter Timing Requirement tIPW IRQx Pulse Width Min 2 x tPCLK +2 Max Unit ns
DPI14-1 FLAG2-0 (IRQ2-0)
tIPW
Figure 8. Interrupts
Rev. PrA |
Page 20 of 48 | November 2004
Preliminary Technical Data
Core Timer
The following timing specification applies to FLAG3 when it is configured as the core timer (CTIMER). Table 12. Core Timer
Parameter Switching Characteristic tWCTIM CTIMER Pulse width Min 4 x tPCLK - 1 Max
ADSP-21368
Unit ns
FLAG3 (CTIMER)
tWCTIM
Figure 9. Core Timer
Timer PWM_OUT Cycle Timing
The following timing specification applies to Timer0, Timer1, and Timer2 in PWM_OUT (pulse width modulation) mode. Timer signals are routed to the DAI_P20-1 pins through the SRU. Therefore, the timing specifications provided below are valid at the DAI_P20-1 pins. Table 13. Timer PWM_OUT Timing
Parameter Switching Characteristic tPWMO Timer Pulse Width Output Min 2 tPCLK - 1 Max 2(231 - 1) tPCLK Unit ns
tPWMO DPI14-0 (TIMER2-0)
Figure 10. Timer PWM_OUT Timing
Rev. PrA |
Page 21 of 48 | November 2004
ADSP-21368
Timer WDTH_CAP Timing
The following timing specification applies to Timer0, Timer1, and Timer2 in WDTH_CAP (pulse width count and capture) mode. Timer signals are routed to the DAI_P20-1 pins through the SRU. Therefore, the timing specification provided below are valid at the DAI_P20-1 pins. Table 14. Timer Width Capture Timing
Parameter Timing Requirement tPWI Timer Pulse Width Min 2 tPCLK Max
Preliminary Technical Data
Unit ns
2(231- 1) tPCLK
tPWI DPI14-0 (TIMER2-0)
Figure 11. Timer Width Capture Timing
Pin to Pin Direct Routing (DAI and DPI)
For direct pin connections only (for example DAI_PB01_I to DAI_PB02_O). Table 15. DAI Pin to Pin Routing
Parameter Timing Requirement tDPIO Delay DAI Pin Input Valid to DAI Output Valid Min 1.5 Max 10 Unit ns
DAI_Pn DPI_Pn
DAI_pm DPI_Pm
tDPIO
Figure 12. DAI Pin to Pin Direct Routing
Rev. PrA |
Page 22 of 48 | November 2004
Preliminary Technical Data
Precision Clock Generator (Direct Pin Routing)
This timing is only valid when the SRU is configured such that the Precision Clock Generator (PCG) takes its inputs directly from the DAI pins (via pin buffers) and sends its outputs directly to the DAI pins. For the other cases, where the PCG's Table 16. Precision Clock Generator (Direct Pin Routing)
Parameter Timing Requirements tPCGIW Input Clock Period tSTRIG PCG Trigger Setup Before Falling Edge of PCG Input Clock PCG Trigger Hold After Falling Edge of PCG Input Clock tHTRIG Switching Characteristics PCG Output Clock and Frame Sync Active Edge Delay After tDPCGIO PCG Input Clock tDTRIG PCG Output Clock and Frame Sync Delay After PCG Trigger Output Clock Period tPCGOW Min 24 2 2 Max
ADSP-21368
inputs and outputs are not directly routed to/from DAI pins (via pin buffers) there is no timing data available. All Timing Parameters and Switching Characteristics apply to external DAI pins (DAI_P07 - DAI_P20).
Unit
ns ns
2.5 10 ns 2.5 + 2.5 x tPCGOW 10 + 2.5 x tPCGOW ns 48
tSTRIG DAI_Pn DPI_Pn PCG_TRIGx_I tHTRIG DAI_Pm DPI_Pm PCG_EXTx_I (CLKIN) tDPCGIO DAI_Py DPI_Py PCG_CLKx_O DAI_Pz DPI_Pz PCG_FSx_O tPCGIW
tPCGOW
tDTRIG
Figure 13. Precision Clock Generator (Direct Pin Routing)
Rev. PrA |
Page 23 of 48 | November 2004
ADSP-21368
Flags
The timing specifications provided below apply to the FLAG3-0 and DPI_P14-1 pins, the parallel port, and the serial peripheral interface (SPI). See TBD for more information on flag use. Table 17. Flags
Parameter Timing Requirement FLAG3-0 IN Pulse Width tFIPW Switching Characteristic FLAG3-0 OUT Pulse Width tFOPW Min
Preliminary Technical Data
Max
Unit ns
2 x tPCLK + 3
2 x tPCLK - 1
ns
DPI_P140-1 (FLAG3-0IN) (DATA31-0)
tFIPW
DPI_P14-1 (FLAG3-0OUT ) (DATA31-0)
tFOPW
Figure 14. Flags
Rev. PrA |
Page 24 of 48 | November 2004
Preliminary Technical Data
SDRAM Interface Timing
Table 18. SDRAM Interface Timing1
Parameter Timing Requirement tSSDAT DATA Setup Before CLKOUT tHSDAT DATA Hold After CLKOUT Switching Characteristic tSCLK CLKOUT Period tSCLKH CLKOUT Width High tSCLKL CLKOUT Width Low Command, ADDR, Data Delay After CLKOUT2 tDCAD tHCAD Command, ADDR, Data Hold After CLKOUT1 tDSDAT Data Disable After CLKOUT tENSDAT Data Enable After CLKOUT
1 2
ADSP-21368
Minimum TBD TBD TBD TBD TBD
Maximum
Unit ns ns ns ns ns ns ns ns ns
TBD TBD TBD TBD
For VDDINT = 1.3 V. Command pins include: SRAS, SCAS, SWE, SDQM, SMS, SA10, SCKE.
tSCLK
SDCLK
tSCLKH
t SSDAT tHSDAT
DATA (IN)
t SCLKL
t DCAD tENSDAT
DATA(OUT)
tD SDA T tHCAD
tDCAD
CMND ADDR (OUT)
tHCAD
NOTE: COMMAND = S R AS , S CAS , S WE , SDQM, S MS , SA10, SCKE.
Figure 15. SDRAM Interface Timing
Rev. PrA |
Page 25 of 48 | November 2004
ADSP-21368
External Port Bus Request and Grant Cycle Timing
Table 19 and Figure 16 describe external port bus request and bus grant operations. Table 19. External Port Bus Request and Read/Write Timing
Parameter, 1, 2 Timing Requirements tBS BR asserted to CLKOUT high setup tBH CLKOUT high to BR de-asserted hold time Switching Characteristics tSD CLKOUT low to xMS, address, and RD/WR disable CLKOUT low to xMS, address, and RD/WR enable tSE tDBG CLKOUT high to BG asserted setup tEBG CLKOUT high to BG de-asserted hold time tDBH CLKOUT high to BGH asserted setup tEBH CLKOUT high to BGH de-asserted hold time
1 2
Preliminary Technical Data
Minimum TBD TBD
Maximum
Unit ns ns
TBD TBD TBD TBD TBD TBD
ns ns ns ns ns ns
These are preliminary timing parameters that are based on worst-case operating conditions. The pad loads for these timing parameters are 20 pF.
CLKI N
BRx OPTIONAL HIGHEST PRIORI TY REQUESTER BECOMES BUS MASTER
ADDR
VALID
VALID
MSx
VALID
MS, STROBES DRIVEN INACTIVE BEFORE THREE-STAT E
VALID
RD
WR
ACK SLAVE DEASSERTS ACK IN 2ND CYCLE IF NEEDED DATA
VALID BTC
BTC DOES NOT OCCUR IF NO OTHER BRS ASSERTED
VALID
Figure 16. External Port Bus Request and Read/Write Timing
Rev. PrA |
Page 26 of 48 | November 2004
Preliminary Technical Data
Serial Ports
To determine whether communication is possible between two devices at clock speed n, the following specifications must be confirmed: 1) frame sync delay and frame sync setup and hold, 2) data delay and data setup and hold, and 3) SCLK width. Table 20. Serial Ports--External Clock
Parameter Timing Requirements tSFSE1 FS Setup Before SCLK (Externally Generated FS in either Transmit or Receive Mode) tHFSE1 FS Hold After SCLK (Externally Generated FS in either Transmit or Receive Mode) 1 tSDRE Receive Data Setup Before Receive SCLK tHDRE1 Receive Data Hold After SCLK tSCLKW SCLK Width tSCLK SCLK Period Switching Characteristics tDFSE2 FS Delay After SCLK (Internally Generated FS in either Transmit or Receive Mode) tHOFSE2 FS Hold After SCLK (Internally Generated FS in either Transmit or Receive Mode) tDDTE2 Transmit Data Delay After Transmit SCLK tHDTE2 Transmit Data Hold After Transmit SCLK
1 2
ADSP-21368
Serial port signals (SCLK, FS, data channel A,/data channel B) are routed to the DAI_P20-1 pins using the SRU. Therefore, the timing specifications provided below are valid at the DAI_P20-1 pins.
Min
Max
Unit
2.5 2.5 2.5 2.5 24 48
ns ns ns ns ns ns
7 2 7 2
ns ns ns ns
Referenced to sample edge. Referenced to drive edge.
Table 21. Serial Ports--Internal Clock
Parameter Timing Requirements tSFSI1 FS Setup Before SCLK (Externally Generated FS in either Transmit or Receive Mode) FS Hold After SCLK tHFSI1 (Externally Generated FS in either Transmit or Receive Mode) 1 tSDRI Receive Data Setup Before SCLK tHDRI1 Receive Data Hold After SCLK Switching Characteristics tDFSI2 FS Delay After SCLK (Internally Generated FS in Transmit Mode) FS Hold After SCLK (Internally Generated FS in Transmit Mode) tHOFSI2 2 tDFSI FS Delay After SCLK (Internally Generated FS in Receive or Mode) tHOFSI2 FS Hold After SCLK (Internally Generated FS in Receive Mode) tDDTI2 Transmit Data Delay After SCLK 2 tHDTI Transmit Data Hold After SCLK tSCLKIW Transmit or Receive SCLK Width
1 2
Min
Max
Unit
7 2.5 7 2.5
ns ns ns ns
3 -1.0 3 -1.0 3 -1.0 0.5tSCLK - 2 0.5tSCLK + 2
ns ns ns ns ns ns ns
Referenced to the sample edge. Referenced to drive edge.
Rev. PrA |
Page 27 of 48 | November 2004
ADSP-21368
Table 22. Serial Ports--Enable and Three-State
Parameter Switching Characteristics tDDTEN1 Data Enable from External Transmit SCLK Data Disable from External Transmit SCLK tDDTTE1 tDDTIN1 Data Enable from Internal Transmit SCLK
1
Preliminary Technical Data
Min 2 7 -1 Max Unit ns ns ns
Referenced to drive edge.
Table 23. Serial Ports--External Late Frame Sync
Parameter Min Switching Characteristics tDDTLFSE1 Data Delay from Late External Transmit FS or External Receive FS with MCE = 1, MFD = 0 tDDTENFS1 Data Enable for MCE = 1, MFD = 0 0.5
1
Max
Unit
7
ns ns
The tDDTLFSE and tDDTENFS parameters apply to Left-justified Sample Pair as well as DSP serial mode, and MCE = 1, MFD = 0.
EXTERNAL RECEIVE FS WITH MCE = 1, MFD = 0
DAI_P20-1 (SCLK)
DRIVE
SAMPLE
DRIVE
tSFSE/I
DAI_P20-1 (FS)
tHFSE/I
tDDTENFS
DAI_P20-1 (DATA CHANNEL A/B)
tDDTE/I tHDTE/I 1ST BIT 2ND BIT
tDDTLFSE
LATE EXTERNAL TRANSMIT FS DRIVE SAMPLE DRIVE
DAI_P20-1 (SCLK)
tSFSE/I
DAI_P20-1 (FS)
tHFSE/I
tDDTENFS
DAI_P20-1 (DATA CHANNEL A/B)
tDDTE/I tHDTE/I 1ST BIT 2ND BIT
tDDTLFSE
NOTE SERIAL PORT SIGNALS (SCLK, FS, DATA CHANNEL A/B) ARE ROUTED TO THE DAI_P20-1 PINS USING THE SRU. THE TIMING SPECIFICATIONS PROVIDED HERE ARE VALID AT THE DAI_P20-1 PINS.
Figure 17. External Late Frame Sync1
1
This figure reflects changes made to support Left-justified Sample Pair mode.
Rev. PrA |
Page 28 of 48 | November 2004
Preliminary Technical Data
DATA RECEIVE-- INTERNAL CLOCK DRIVE EDGE SAMPLE EDGE DATA RECEIVE-- EXTERNAL CLOCK DRIVE EDGE
ADSP-21368
SAMPLE EDGE
tSCLKIW
DAI_P20-1 (SCLK) DAI_P20-1 (SCLK)
tSCLKW
tDFSI tHOFSI
DAI_P20-1 (FS)
tSFSI
tHFSI
DAI_P20-1 (FS)
tDFSE tHOFSE tSFSE
tHFSE
tSDRI
DAI_P20-1 (DATA CHANNEL A/B)
tHDRI
DAI_P20-1 (DATA CHANNEL A/B)
tSDRE
tHDRE
NOTE: EITHER THE RISING EDGE OR FALLING EDGE OF SCLK (EXTERNAL), SCLK (INTERNAL) CAN BE USED AS THE ACTIVE SAMPLING EDGE.
DATA TRANSMIT -- INTERNAL CLOCK DRIVE EDGE SAMPLE EDGE
DATA TRANSMIT -- EXTERNAL CLOCK DRIVE EDGE SAMPLE EDGE
tSCLKIW
DAI_P20-1 (SCLK) DAI_P20-1 (SCLK)
tSCLKW
tDFSI tHOFSI
DAI_P20-1 (FS)
tSFSI
tHFSI
DAI_P20-1 (FS)
tDFSE tHOFSE tSFSE tHFSE
tHDTI
DAI_P20-1 (DATA CHANNEL A/B)
tDDTI
DAI_P20-1 (DATA CHANNEL A/B)
tHDTE
tDDTE
NOTE: EITHER THE RISING EDGE OR FALLING EDGE OF SCLK (EXTERNAL), SCLK (INTERNAL) CAN BE USED AS THE ACTIVE SAMPLING EDGE.
DRIVE EDGE DAI_P20-1 SCLK (EXT) SCLK
DRIVE EDGE
tDDTEN
DAI_P20-1 (DATA CHANNEL A/B) DRIVE EDGE DAI_P20-1 SCLK (INT)
tDDTTE
tDDTIN
DAI_P20-1 (DATA CHANNEL A/B)
Figure 18. Serial Ports
Rev. PrA |
Page 29 of 48 | November 2004
ADSP-21368
Input Data Port
The timing requirements for the IDP are given in Table 24.IDP Signals (SCLK, FS, SDATA) are routed to the DAI_P20-1 pins using the SRU. Therefore, the timing specifications provided below are valid at the DAI_P20-1 pins. Table 24. IDP
Parameter Timing Requirements tSISFS1 FS Setup Before SCLK Rising Edge 1 tSIHFS FS Hold After SCLK Rising Edge SData Setup Before SCLK Rising Edge tSISD1 tSIHD1 SData Hold After SCLK Rising Edge tIDPCLKW Clock Width tIDPCLK Clock Period
1
Preliminary Technical Data
Min 2.5 2.5 2.5 2.5 9 24
Max
Unit ns ns ns ns ns ns
DATA, SCLK, FS can come from any of the DAI pins. SCLK and FS can also come via PCG or SPORTs. PCG's input can be either CLKIN or any of the DAI pins.
SAMPLE EDGE tIPDCLK
DAI_P20-1 (SCLK)
tIPDCLKW
tSISFS
DAI_P20-1 (FS)
tSIHFS
tSISD
DAI_P20-1 (SDATA)
tSIHD
Figure 19. IDP Master Timing
Rev. PrA |
Page 30 of 48 | November 2004
Preliminary Technical Data
Parallel Data Acquisition Port (PDAP)
The timing requirements for the PDAP are provided in Table 25. PDAP is the parallel mode operation of channel 0 of the IDP. For details on the operation of the IDP, see the IDP chapter of the ADSP-2136x SHARC Processor Hardware ReferTable 25. Parallel Data Acquisition Port (PDAP)
Parameter Timing Requirements tSPCLKEN1 PDAP_CLKEN Setup Before PDAP_CLK Sample Edge 1 tHPCLKEN PDAP_CLKEN Hold After PDAP_CLK Sample Edge PDAP_DAT Setup Before SCLK PDAP_CLK Sample Edge tPDSD1 tPDHD1 PDAP_DAT Hold After SCLK PDAP_CLK Sample Edge tPDCLKW Clock Width tPDCLK Clock Period Switching Characteristics tPDHLDD Delay of PDAP Strobe After Last PDAP_CLK Capture Edge for a Word tPDSTRB PDAP Strobe Pulse Width
1
ADSP-21368
ence. Note that the most significant 16 bits of external PDAP data can be provided through either the parallel port AD15-0 or the DAI_P20-5 pins. The remaining 4 bits can only be sourced through DAI_P4-1. The timing below is valid at the DAI_P20-1 pins or at the AD15-0 pins.
Min 2.5 2.5 2.5 2.5 7 24
Max
Unit ns ns ns ns ns ns
2 x tCCLK 1 x tCCLK - 1
ns ns
Source pins of DATA are ADDR7-0, DATA7-0, or DAI pins. Source pins for SCLK and FS are: 1) DAI pins, 2) CLKIN through PCG, or 3) DAI pins through PCG.
SAMPLE EDGE
t PDCLK t PDCLKW
DAI_P20-1 (PDAP_CLK)
t SPCLKEN
DAI_P20-1 (PDAP_CLKEN)
t HPCLKEN
t PDSD
DATA
t PDHD
DAI_P20-1 (PDAP_STROBE)
tPDSTRB t PDHLDD
Figure 20. PDAP Timing
Rev. PrA |
Page 31 of 48 | November 2004
ADSP-21368
Sample Rate Converter--Serial Input Port
The SRC input signals (SCLK, FS, and SDATA) are routed from the DAI_P20-1 pins using the SRU. Therefore, the timing specifications provided in Table 26 are valid at the DAI_P20-1 pins. Table 26. SRC, Serial Input Port
Parameter Timing Requirements FS Setup Before SCLK Rising Edge tSRCSFS1 tSRCHFS1 FS Hold After SCLK Rising Edge tSRCSD1 SData Setup Before SCLK Rising Edge 1 tSRCHD SData Hold After SCLK Rising Edge tSRCCLKW Clock Width tSRCCLK Clock Period
1
Preliminary Technical Data
Min 4 5.5 4 5.5 9 20
Max
Unit ns ns ns ns ns ns
DATA, SCLK, FS can come from any of the DAI pins. SCLK and FS can also come via PCG or SPORTs. PCG's input can be either CLKIN or any of the DAI pins.
SAMPLE EDGE tSRCCLK
DAI_P20-1 (SCLK)
tSRCCLKW
tSRCSFS
DAI_P20-1 (FS)
tSRCHFS
tSRCSD
DAI_P20-1 (SDATA)
tSRCHD
Figure 21. SRC Serial Input Port Timing
Rev. PrA |
Page 32 of 48 | November 2004
Preliminary Technical Data
Sample Rate Converter--Serial Output Port
For the serial output port, the frame-sync is an input and it should meet setup and hold times with regard to SCLK on the output port. The serial data output, SDATA, has a hold time Table 27. SRC, Serial Output Port
Parameter Timing Requirements FS Setup Before SCLK Rising Edge tSRCSFS1 tSRCHFS1 FS Hold Before SCLK Rising Edge Switching Characteristics tSRCTDD1 Transmit Data Delay After SCLK Falling Edge 1 tSRCTDH Transmit Data Hold After SCLK Falling Edge
1
ADSP-21368
and delay specification with regard to SCLK. Note that SCLK rising edge is the sampling edge and the falling edge is the drive edge.
Min 4 5.5
Max
Unit ns ns
7 2
ns ns
DATA, SCLK, FS can come from any of the DAI pins. SCLK and FS can also come via PCG or SPORTs. PCG's input can be either CLKIN or any of the DAI pins.
SAMPLE EDGE tSRCCLK
DAI_P20-1 (SCLK)
tSRCCLKW
tSRCSFS
DAI_P20-1 (FS)
tSRCHFS
tSRCTDH tSRCTDD
DAI_P20-1 (SDATA)
Figure 22. SRC Serial Output Port Timing
Rev. PrA |
Page 33 of 48 | November 2004
ADSP-21368
SPDIF Transmitter
Serial data input to the SPDIF transmitter can be formatted as left justified, I2S or right justified with word widths of 16, 18, 20, or 24 bits. The following sections provide timing for the transmitter. SPDIF Transmitter--Serial Input Waveforms Figure 23 shows the right-justified mode. LRCLK is HI for the left channel and LO for the right channel. Data is valid on the rising edge of SCLK. The MSB is delayed 12-bit clock periods (in 20-bit output mode) or 16-bit clock periods (in 16-bit output
Preliminary Technical Data
mode) from an LRCLK transition, so that when there are 64 SCLK periods per LRCLK period, the LSB of the data will be right-justified to the next LRCLK transition.
LRCLK SCLK SDATA
LEFT CHANNEL
RIGHT CHANNEL
LSB
MSB
MSB-1
MSB-2
LSB+2 LSB+1
LSB
MSB
MSB-1 MSB-2
LSB+2
LSB+1
LSB
Figure 23. Right-Justified Mode
Figure 24 shows the default I2S-justified mode. LRCLK is LO for the left channel and HI for the right channel. Data is valid on the rising edge of SCLK. The MSB is left-justified to an LRCLK transition but with a single SCLK period delay.
RIGHT CHANNEL LRCLK LEFT CHANNEL
SCLK
SDATA
MSB
MSB-1 MSB-2
LSB+2 LSB+1
LSB
MSB
MSB-1
MSB-2
LSB+2
LSB+1
LSB
MSB
Figure 24. I2S-Justified Mode
Figure 25 shows the left-justified mode. LRCLK is HI for the left channel and LO for the right channel. Data is valid on the rising edge of SCLK. The MSB is left-justified to an LRCLK transition with no MSB delay.
LRCLK SCLK SDATA
LEFT CHANNEL
RIGHT CHANNEL
MSB
MSB-1
MSB-2
LSB+2
LSB+1
LSB
MSB
MSB-1
MSB-2
LSB+2
LSB+1
LSB
MSB
MSB+1
Figure 25. Left-Justified Mode
Rev. PrA |
Page 34 of 48 | November 2004
Preliminary Technical Data
SPDIF Transmitter Input Data Timing The timing requirements for the Input port are given in Table 28. Input Signals (SCLK, FS, SDATA) are routed to the DAI_P20-1 pins using the SRU. Therefore, the timing specifications provided below are valid at the DAI_P20-1 pins. Table 28. SPDIF Transmitter Input Data Timing
Parameter Timing Requirements tSIFS1 FS Setup Before SCLK Rising Edge tSIHFS1 FS Hold After SCLK Rising Edge tSISD1 SData Setup Before SCLK Rising Edge tSIHD1 SData Hold After SCLK Rising Edge Clock Width tSISCLKW tSISCLK Clock Period
1
ADSP-21368
Min 4 5.5 4 5.5 9 20
Max
Unit ns ns ns ns ns ns
DATA, SCLK, FS can come from any of the DAI pins. SCLK and FS can also come via PCG or SPORTs. PCG's input can be either CLKIN or any of the DAI pins.
SAMPLE EDGE t SISCLKW
DAI_P20-1 (SCLK)
tSISFS
DAI_P20-1 (FS)
tSIHFS
t SISD
DAI_P20-1 (SDATA)
tSIH D
Figure 26. SPDIF Transmitter Input Timing
Over Sampling Clock (TXCLK) Switching Characteristics SPDIF Transmitter has an over sampling clock. This TXCLK input is divided down to generate the Biphase Clock. Table 29. Over Sampling Clock (TXCLK) Switching Characteristics
Parameter TXCLK Frequency for TXCLK = 768 x FS TXCLK Frequency for TXCLK = 512 x FS TXCLK Frequency for TXCLK = 384 x FS TXCLK Frequency for TXCLK = 256 x FS Frame Rate Min Max 147.5 98.4 73.8 49.2 192.0 Unit MHz MHz MHz MHz MHz
Rev. PrA |
Page 35 of 48 | November 2004
ADSP-21368
SPDIF Receiver
The following sections describe timing as it relates to the SPDIF receiver. Internal Digital PLL Mode In internal Digital Phase-locked Loop mode the internal PLL (Digital PLL) generates the 512 x Fs clock. Table 30. SPDIF Receiver Internal Digital PLL Mode Timing
Parameter Switching Characteristics LRCLK Delay After SCLK tDFSI tHOFSI LRCLK Hold After SCLK tDDTI Transmit Data Delay After SCLK tHDTI Transmit Data Hold After SCLK tSCLKIW1 Transmit SCLK Width tCCLK Core Clock Period
1
Preliminary Technical Data
Min
Max 5
Unit ns ns ns ns ns ns
-2 5 -2 40 5
SCLK frequency is 64 x FS where FS = the frequency of LRCLK.
DRIVE EDGE tSCLKIW
DAI_P20-1 (SCLK)
SAMPLE EDGE
tDFSI tHOFSI
DAI_P20-1 (FS)
tSFSI
tHFSI
tHDTI
DAI_P20-1 (DATA CHANNEL A/B)
tDDTI
Figure 27. SPDIF Receiver Internal Digital PLL Mode Timing
Rev. PrA |
Page 36 of 48 | November 2004
Preliminary Technical Data
External PLL Mode In External PLL Mode internal Digital PLL is disabled and the receiver runs on the PLL that is connected to the processor externally. This external PLL generates the 512 x Fs clock (MCLK) from the reference clock (LRCLK) and gives it to SPDIF receiver. Table 31. SPDIF Receiver External PLL Mode Timing
Parameter Timing Requirements tMCP FMCLK tBDM tLDM tDDP tDDS tDDH Min MCLK Period MCLK Frequency (1/tMCP) SCLK Propagation Delay from MCLK to the Falling Edge LRCLK Propagation Delay From MCLK Data Propagation Delay From MCLK Data Output Setup To SCLK Data Output Hold From SCLK 10 100 30 30 30 1/2 SCLK Period 1/2 SCLK Period Max
ADSP-21368
Unit ns MHz ns ns ns ns ns
MCLK INPUT (NOT TO SCALE)
BCLK OUTPUT
tBDM
LRCLK OUTPUT
tLDM tDDS
SDATA OUTPUT I2S-JUSTIFIED MODE MSB
tDDH tDDP tDDS
MSB
tDDS
LSB
SDATA OUTPUT RIGHT-JUSTIFIED MODE
tDDH tDDP
tDDH
Figure 28. SPDIF Receiver External PLL Mode Timing
Rev. PrA |
Page 37 of 48 | November 2004
ADSP-21368
SPI Interface--Master
The ADSP-21368 contains two SPI ports. The primary has dedicated pins and the secondary is available through the DPI. The timing provided in Table 32 and Table 33 on page 39 applies to both. Table 32. SPI Interface Protocol -- Master Switching and Timing Specifications
Parameter Timing Requirements tSSPIDM Data Input Valid To SPICLK Edge (Data Input Set-up Time) tHSPIDM SPICLK Last Sampling Edge To Data Input Not Valid Switching Characteristics tSPICLKM Serial Clock Cycle SErial Clock High Period tSPICHM tSPICLM Serial Clock Low Period tDDSPIDM SPICLK Edge to Data Out Valid (Data Out Delay Time) tHDSPIDM SPICLK Edge to Data Out Not Valid (Data Out Hold Time) tSDSCIM FLAG3-0IN (SPI device select) Low to First SPICLK Edge tHDSM Last SPICLK Edge to FLAG3-0IN High Sequential Transfer Delay tSPITDM Min 8 2
Preliminary Technical Data
Max
Unit ns ns
8 x tPCLK 4 x tPCLK 4 x tPCLK - 2 0 2 4 x tPCLK - 2 4 x tPCLK - 1 4 x tPCLK - 1
ns ns ns ns ns ns ns
FLAG3-0 (OUTPUT)
t SD SCIM
SPICLK (CP = 0) (OUTPUT)
t SPI CH M
t SPIC LM
t SPIC LK M
t HDSM
tSPIT DM
t SPIC LM
SPICLK (CP = 1) (OUTPUT)
t SPI CHM
t DDSPI DM
MOSI (OUTPUT) MSB
t HDSPIDM
LSB
t SSPID M
CPHASE=1 MISO (INPUT) MSB VALID
t SSPI DM t HSSPIDM
LSB VALID
t HSPIDM
t DDSPIDM
MOSI (OUTPUT) CPHASE=0 MISO (INPUT) MSB
t HDSPIDM
LSB
t SSPIDM
MSB VALID
tH SPID M
LSB VALID
Figure 29. SPI Master Timing
Rev. PrA |
Page 38 of 48 | November 2004
Preliminary Technical Data
SPI Interface--Slave
Table 33. SPI Interface Protocol --Slave Switching and Timing Specifications
Parameter Timing Requirements tSPICLKS tSPICHS tSPICLS tSDSCO Min Serial Clock Cycle Serial Clock High Period Serial Clock Low Period SPIDS Assertion to First SPICLK Edge CPHASE = 0 CPHASE = 1 Last SPICLK Edge to SPIDS Not Asserted, CPHASE = 0 Data Input Valid to SPICLK edge (Data Input Set-up Time) SPICLK Last Sampling Edge to Data Input Not Valid SPIDS Deassertion Pulse Width (CPHASE=0) 4 x tPCLK 2 x tPCLK 2 x tPCLK - 2 2 x tPCLK 2 x tPCLK 2 x tPCLK 2 2 2 x tPCLK Max
ADSP-21368
Unit ns ns ns ns
tHDS tSSPIDS tHSPIDS tSDPPW
ns ns ns ns
Switching Characteristics tDSOE SPIDS Assertion to Data Out Active tDSDHI SPIDS Deassertion to Data High Impedance tDDSPIDS SPICLK Edge to Data Out Valid (Data Out Delay Time) SPICLK Edge to Data Out Not Valid (Data Out Hold Time) tHDSPIDS tDSOV SPIDS Assertion to Data Out Valid (CPHASE=0)
0 0 2 x tPCLK
4 4 9.4 5 x tPCLK
ns ns ns ns ns
SPIDS (INPUT)
t S P I C HS
SPICLK (CP = 0) (INPUT)
tS P I C L S
tSPICLKS tHD S t SD P P W
t S D S CO
SPICLK (CP = 1) (INPUT)
tS P I C L S
t S P IC HS
tD S O E
t DD S P ID S t D D S PI D S
MSB LSB
t D SD H I t H DL S B S
MISO (OUTPUT) CPHASE=1 MOSI (INPUT)
t H S PI D S t S S P ID S
MSB VALID
t S S P I DS
LSB VALID
tD S O V t D S OE
MISO (OUTPUT) CPHASE=0 MOSI (INPUT) MSB VALID MSB
tD D S P ID S
tHDLSBS
t D S DH I
LSB
t SS P ID S
LSB VALID
t HS P I D S
Figure 30. SPI Slave Timing
Rev. PrA |
Page 39 of 48 | November 2004
ADSP-21368
Universal Asynchronous Receiver-Transmitter (UART) Port--Receive and Transmit Timing
Figure 31 describes UART port receive and transmit operations. The maximum baud rate is SCLK/16. As shown in Figure 31 there is some latency between the generation internal UART
Preliminary Technical Data
interrupts and the external data operations. These latencies are negligible at the data transmission rates for the UART.
CLKOUT (SAMPLE CLOCK)
RXD
DATA(5-8) STOP
RECEIVE INTERNAL UART RECEIVE INTERRUPT
UART RECEIVE BIT SET BY DATA STOP; CLEARED BY FIFO READ
START TXD DATA(5-8) STOP (1-2)
TRANSMIT INTERNAL UART TRANSMIT INTERRUPT UART TRANSMIT BIT SET BY PROGRAM; CLEARED BY WRITE TO TRANSMIT
Figure 31. UART Port--Receive and Transmit Timing
Rev. PrA |
Page 40 of 48 | November 2004
Preliminary Technical Data
JTAG Test Access Port and Emulation
Table 34. JTAG Test Access Port and Emulation
Parameter Timing Requirements tTCK TCK Period tSTAP TDI, TMS Setup Before TCK High tHTAP TDI, TMS Hold After TCK High tSSYS1 System Inputs Setup Before TCK Low 1 tHSYS System Inputs Hold After TCK Low tTRSTW TRST Pulse Width Switching Characteristics tDTDO TDO Delay from TCK Low 2 System Outputs Delay After TCK Low tDSYS
1 2
ADSP-21368
Min tCK 5 6 7 18 4tCK
Max
Unit ns ns ns ns ns ns
7 10
ns ns
System Inputs = AD15-0, SPIDS, CLKCFG1-0, RESET, BOOTCFG1-0, MISO, MOSI, SPICLK, DAI_Px, FLAG3-0. System Outputs = MISO, MOSI, SPICLK, DAI_Px, AD15-0, RD, WR, FLAG3-0, CLKOUT, EMU, ALE.
tC TK TK C tTP SA TS M TI D tTO DD TO D tSS SY SSE YTM IN U S PT t SS DY SSE YTM O T US UP T t SS HY tTP HA
Figure 32. IEEE 1149.1 JTAG Test Access Port
Rev. PrA |
Page 41 of 48 | November 2004
ADSP-21368
OUTPUT DRIVE CURRENTS
Figure 33 shows typical I-V characteristics for the output drivers of the ADSP-21368. The curves represent the current drive capability of the output drivers as a function of output voltage.
Preliminary Technical Data
CAPACITIVE LOADING
Output delays and holds are based on standard capacitive loads: 30 pF on all pins (see Figure 34). Figure 38 shows graphically how output delays and holds vary with load capacitance. The graphs of Figure 36, Figure 37, and Figure 38 may not be linear outside the ranges shown for Typical Output Delay vs. Load Capacitance and Typical Output Rise Time (20%-80%, V=Min) vs. Load Capacitance.
TBD TBD
Figure 33. ADSP-21368 Typical Drive
TEST CONDITIONS
The ac signal specifications (timing parameters) appear Table 10 on page 20 through Table 34 on page 41. These include output disable time, output enable time, and capacitive loading. The timing specifications for the SHARC apply for the voltage reference levels in Figure 34. Timing is measured on signals when they cross the 1.5 V level as described in Figure 35. All delays (in nanoseconds) are measured between the point that the first signal reaches 1.5 V and the point that the second signal reaches 1.5 V.
Figure 36. Typical Output Rise/Fall Time (20%-80%, VDDEXT = Max)
TBD
Figure 37. Typical Output Rise/Fall Time (20%-80%, VDDEXT =Min)
TO OUTPUT PIN
50 1.5V
30pF
Figure 34. Equivalent Device Loading for AC Measurements (Includes All Fixtures)
INPUT 1.5V OR OUTPUT
1.5V
TBD
Figure 38. Typical Output Delay or Hold vs. Load Capacitance (at Ambient Temperature)
Figure 35. Voltage Reference Levels for AC Measurements
Rev. PrA |
Page 42 of 48 | November 2004
Preliminary Technical Data
THERMAL CHARACTERISTICS
The ADSP-21368 processor is rated for performance over the commercial temperature range, TAMB = -40C to 85C. Table 35 and Table 36 airflow measurements comply with JEDEC standards JESD51-2 and JESD51-6 and the junction-toboard measurement complies with JESD51-8. Test board and thermal via design comply with JEDEC standards JESD51-9 (BGA). The junction-to-case measurement complies with MILSTD-883. All measurements use a 2S2P JEDEC test board. To determine the Junction Temperature of the device while on the application PCB, use: T J = T CASE + ( JT x P D ) where: TJ = Junction temperature C TCASE = Case temperature (C) measured at the top center of the package JT = Junction-to-Top (of package) characterization parameter is the Typical value from Table 35 and Table 36. PD = Power dissipation (see EE Note #TBD) Values of JA are provided for package comparison and PCB design considerations. JA can be used for a first order approximation of TJ by the equation: T J = T A + ( JA x P D ) where: TA = Ambient Temperature C Values of JC are provided for package comparison and PCB design considerations when an external heatsink is required. Values of JB are provided for package comparison and PCB design considerations. Note that the thermal characteristics values provided in Table 35 and Table 36 are modeled values. Table 35. Thermal Characteristics for 256 Ball SBGA (No thermal vias in PCB)
Parameter JA JMA JMA JC JT JMT JMT Condition Airflow = 0 m/s Airflow = 1 m/s Airflow = 2 m/s Airflow = 0 m/s Airflow = 1 m/s Airflow = 2 m/s Typical TBD TBD TBD TBD TBD TBD TBD Unit C/W C/W C/W C/W C/W C/W C/W
ADSP-21368
Table 36. Thermal Characteristics for 256 Ball SBGA (Thermal vias in PCB)
Parameter JA JMA JMA JC JT JMT JMT Condition Airflow = 0 m/s Airflow = 1 m/s Airflow = 2 m/s Airflow = 0 m/s Airflow = 1 m/s Airflow = 2 m/s Typical TBD TBD TBD TBD TBD TBD TBD Unit C/W C/W C/W C/W C/W C/W C/W
Rev. PrA |
Page 43 of 48 | November 2004
ADSP-21368
256-BALL SBGA PINOUT
Table 37. 256-Ball SBGA Pin Assignment (Numerically by Ball Number)
Ball No. A01 A02 A03 A04 A05 A06 A07 A08 A09 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 E01 E02 E03 E04 E17 E18 E19 E20 J01 J02 J03 J04 Signal NC TDI TMS CLK_CFG0 CLK_CFG1 EMU DAI4 DAI1 DPI14 DPI12 DPI10 DPI9 DPI7 DPI6 DPI3 DPI2 CLKOUT DATA31 NC NC DAI11 DAI8 VDD VDD GND GND DATA25 DATA23 DAI19 DAI18 GND GND Ball No. B01 B02 B03 B04 B05 B06 B07 B08 B09 B10 B11 B12 B13 B14 B15 B16 B17 B18 B19 B20 F01 F02 F03 F04 F17 F18 F19 F20 K01 K02 K03 K04 Signal DAI5 SDCLK1 TRST TCK BOOTCFG_0 BOOTCFG_1 TDO DAI3 DAI2 DPI13 DPI11 DPI8 DPI5 DPI4 DPI1 RESET DATA30 DATA29 DATA28 NC DAI14 DAI12 GND GND IOVDD GND ID2 DATA21 FLAG0 DAI20 GND IOVDD Ball No. C01 C02 C03 C04 C05 C06 C07 C08 C09 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 G01 G02 G03 G04 G17 G18 G19 G20 L01 L02 L03 L04 Signal DAI9 DAI7 GND IOVDD GND GND VDD GND GND VDD GND GND VDD GND GND VDD VDD VDD DATA27 RPBA DAI15 DAI13 GND IOVDD VDD VDD DATA22 DATA20 FLAG2 FLAG1 VDD VDD
Preliminary Technical Data
Ball No. D01 D02 D03 D04 D05 D06 D07 D08 D09 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 H01 H02 H03 H04 H17 H18 H19 H20 M01 M02 M03 M04
Signal DAI10 DAI6 GND IOVDD GND IOVDD VDD GND IOVDD VDD GND IOVDD VDD GND IOVDD GND IOVDD GND DATA26 DATA24 DAI17 DAI16 VDD VDD IOVDD GND DATA19 DATA18 ACK FLAG3 GND GND
Rev. PrA |
Page 44 of 48 | November 2004
Preliminary Technical Data
Table 37. 256-Ball SBGA Pin Assignment (Numerically by Ball Number) (Continued)
Ball No. J17 J18 J19 J20 N01 N02 N03 N04 N17 N18 N19 N20 U01 U02 U03 U04 U05 U06 U07 U08 U09 U10 U11 U12 U13 U14 U15 U16 U17 U18 U19 U20 Signal GND GND ID1 DATA17 RD SDCLK0 GND IOVDD GND GND DATA11 DATA10 MS0 MS1 VDD GND IOVDD GND IOVDD VDD IOVDD GND IOVDD VDD IOVDD IOVDD VDD IOVDD VDD VDD DATA0 DATA2 Ball No. K17 K18 K19 K20 P01 P02 P03 P04 P17 P18 P19 P20 V01 V02 V03 V04 V05 V06 V07 V08 V09 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 Signal VDD VDD ID0 DATA16 SDA10 WR VDD VDD VDD VDD DATA8 DATA9 ADDR22 ADDR23 VDD GND GND GND GND VDD GND GND GND VDD GND IOVDD VDD GND GND GND DATA1 DATA3 Ball No. L17 L18 L19 L20 R01 R02 R03 R04 R17 R18 R19 R20 W01 W02 W03 W04 W05 W06 W07 W08 W09 W10 W11 W12 W13 W14 W15 W16 W17 W18 W19 W20 Signal VDD VDD DATA15 DATA14 SDWE SDRAS GND GND IOVDD GND DATA6 DATA7 GND ADDR21 ADDR19 ADDR20 ADDR17 ADDR16 ADDR15 ADDR14 AVDD AVSS ADDR13 ADDR12 ADDR10 ADDR8 ADDR5 ADDR4 ADDR1 ADDR2 ADDR0 NC Ball No. M17 M18 M19 M20 T01 T02 T03 T04 T17 T18 T19 T20 Y01 Y02 Y03 Y04 Y05 Y06 Y07 Y08 Y09 Y10 Y11 Y12 Y13 Y14 Y15 Y16 Y17 Y18 Y19 Y20
ADSP-21368
Signal IOVDD GND DATA12 DATA13 SDCKE SDCAS GND IOVDD GND GND DATA5 DATA4 GND NC NC ADDR18 BR1 BR2 XTAL2 CLKIN NC NC BR3 BR4 ADDR11 ADDR9 ADDR7 ADDR6 ADDR3 GND GND NC
Rev. PrA |
Page 45 of 48 | November 2004
ADSP-21368
PACKAGE DIMENSIONS
The ADSP-21368 is available in 256-ball lead-free and leaded SBGA packages
Preliminary Technical Data
A1 CORNER INDEX AREA 20 18 16 14 12 10 8 6 4 2 19 17 15 13 11 9 7 5 3 1 A1 BALL INDICATOR A B C D E F G H J K L M N P R T U V W Y
BOTTOM VIEW TOP VIEW 27.00 BSC SQ
24.13 REF SQ 1.00 0.80 0.60
1.27 NOM
0.70 0.60 0.50
1.70 MAX 0.10 MIN
0.20 COPLANARITY DIMENSIONS ARE IN MILLIMETERS AND COMPLY WITH JEDEC STANDARDS MO-192-BAL-2. 0.90 BALL 0.75 DIAMETER 0.60 0.25 MIN 4X
SEATING PLANE
Figure 39. 256-Ball BGA, Thermally Enhanced (BP-256)
ORDERING GUIDE
Analog Devices offers a wide variety of audio algorithms and combinations to run on the ADSP-21368 processor. These products are sold as part of a chip set, bundled with necessary application software under special part numbers. For a complete list, visit our web site at www.analog.com/SHARC.
Part Number1, 2 ADSP-21368SKBP-ENG ADSP-21368SKBPZENG
1 2
These product also may contain 3rd party IPs that may require users to have authorization from the respective IP holders to receive them. Royalty for use of the 3rd party IPs may also be payable by users.
Ambient Temperature Instruction Range Rate 0C to 70C 400 MHz 0C to 70C 400 MHz
On-Chip SRAM 2M Bit 2M Bit
ROM 6M Bit 6M Bit
Operating Voltage Packages 1.3 INT/3.3 EXT V 1.3 INT/3.3 EXT V 256-Lead SBGA, PbBearing 256-Lead SBGA, PbFree
B indicates Ball Grid Array package. Z indicates Lead Free package. For more information about lead free package offerings, please visit www.analog.com.
Rev. PrA |
Page 46 of 48 | November 2004
Preliminary Technical Data
ADSP-21368
Rev. PrA |
Page 47 of 48 | November 2004
ADSP-21368
Preliminary Technical Data
(c) 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.
PR05268-0-11/04(PrA)
Rev. PrA |
Page 48 of 48 | November 2004
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