描述 Description

The SMJ320C67x DSPs are the floating-point DSP family in the SMJ320C6000 platform. The SMJ320C6701 (?C6701) device is based on the high-performance, advanced VelociTI very-long-instruction-word (VLIW) architecture developed by Texas Instruments (TI?), making this DSP an excellent choice for multichannel and multifunction applications. With performance of up to 1 giga floating-point operations per second (GFLOPS) at a clock rate of 167 MHz, the ?C6701 offers cost-effective solutions to high-performance DSP programming challenges. The ?C6701 DSP possesses the operational flexibility of high-speed controllers and the numerical capability of array processors. This processor has 32 general-purpose registers of 32-bit word length and eight highly independent functional units. The eight functional units provide four floating-/fixed-point ALUs, two fixed-point ALUs, and two floating-/fixed-point multipliers. The ?C6701 can produce two multiply-accumulates (MACs) per cycle for a total of 334 million MACs per second (MMACS). The ?C6701 DSP also has application-specific hardware logic, on-chip memory, and additional on-chip peripherals.

The ?C6701 includes a large bank of on-chip memory and has a powerful and diverse set of peripherals. Program memory consists of a 64K-byte block that is user-configurable as cache or memory-mapped program space. Data memory consists of two 32K-byte blocks of RAM. The peripheral set includes two multichannel buffered serial ports (McBSPs), two general-purpose timers, a host-port interface (HPI), and a glueless external memory interface (EMIF) capable of interfacing to SDRAM or SBSRAM and asynchronous peripherals.

The ?C6701 has a complete set of development tools which includes: a new C compiler, an assembly optimizer to simplify programming and scheduling, and a Windows. debugger interface for visibility into source code execution.

特性 Features

? Highest Performance Floating-Point Digital Signal Processor (DSP) SMJ320C6701
? 7-, 6-ns Instruction Cycle Time
? 140-, 167-MHz Clock Rate
? Eight 32-Bit Instructions/Cycle
? Up to 1 GFLOPS Performance
? Pin-Compatible With ’C6201 Fixed-Point DSP

? SMJ: QML Processing to MIL-PRF-38535
? SM: Standard Processing
? Operating Temperature Ranges
? Extended (W) –55°C to 115°C
? Extended (S) –40°C to 90°C

? VelociTI? Advanced Very Long Instruction Word (VLIW) ’C67x CPU Core
? Eight Highly Independent Functional Units:
? Four ALUs (Floating- and Fixed-Point)
? Two ALUs (Fixed-Point)
? Two Multipliers (Floating- and Fixed-Point)

? Load-Store Architecture With 32 32-Bit General-Purpose Registers
? Instruction Packing Reduces Code Size
? All Instructions Conditional

? Instruction Set Features
? Hardware Support for IEEE Single-Precision Instructions
? Hardware Support for IEEE Double-Precision Instructions
? Byte-Addressable (8-, 16-, 32-Bit Data)
? 32-Bit Address Range
? 8-Bit Overflow Protection
? Saturation
? Bit-Field Extract, Set, Clear
? Bit-Counting
? Normalization

? 1M-Bit On-Chip SRAM
? 512K-Bit Internal Program/Cache (16K 32-Bit Instructions)
? 512K-Bit Dual-Access Internal Data (64K Bytes)

? 32-Bit External Memory Interface (EMIF)
? Glueless Interface to Synchronous Memories: SDRAM and SBSRAM
? Glueless Interface to Asynchronous Memories: SRAM and EPROM

? Four-Channel Bootloading Direct-Memory-Access (DMA) Controller With an Auxiliary Channel
? 16-Bit Host-Port Interface (HPI)
? Access to Entire Memory Map

? Two Multichannel Buffered Serial Ports (McBSPs)
? Direct Interface to T1/E1, MVIP, SCSA Framers
? ST-Bus-Switching Compatible
? Up to 256 Channels Each
? AC97-Compatible
? Serial-Peripheral-Interface (SPI) Compatible (Motorola?)

? Two 32-Bit General-Purpose Timers
? Flexible Phase-Locked-Loop (PLL) Clock Generator
? IEEE-1149.1 (JTAG) Boundary-Scan-Compatible
? 429-Pin Ceramic Ball Grid Array (CBGA) Package (GLP Suffix) and Land Grid Array (CLGA) Package (ZMB Suffix)
? 0.18-μm/5-Level Metal Process
? CMOS Technology

? 3.3-V I/Os, 1.9-V Internal
IEEE Standard 1149.1-1990 Standard-Test-Access Port and Boundary Scan Architecture. VelociTI is a trademark of Texas Instruments Incorporated. Motorola is a trademark of Motorola, Inc. TI is a trademark of Texas Instruments Incorporated. Windows is a registered trademark of the Microsoft Corporation.