《Modern Digital Signal Processors》.pptVIP

Modern Digital Signal Processors Digital Signal Processor Market Most rapidly expanding sector of semiconductor market (30% growth rate 1990-2001) 600 million cell phone subscribers worldwide (June 2001) DSPs in more than 60% of existing cell phones 51.7 million cell phone subscribers in 1Q00 in China, the single largest market (30%) in Asia/Pacific (Dataquest) How many digital signal processors (DSPs) are in each PC? Where are they? DSPs on the Market Today Berkeley Design Tech. Inc. Pocket Guide to DSPs /pocket/pocket.htm (see handout) Texas Instruments First commercially successful DSP Texas Instruments TMS32010 in 1982 Harvey Cragon (UT Austin) was a key part of design team DSP processors shipped More than 250 million in 1999 (estimated) DSP processor revenue $2.1 Billion of $4.4 Billion total (48% share) in 1999 $2.7 Billion of $6.1 Billion total (44% share) in 2000 Modern DSP family is TMS 320C6000 256-bit instructions: Very Long Instruction Word (VLIW) ADSL modems, 3G basestations, video codecs C6000 Instruction Set Architecture C6000 Instruction Set Architecture Address 8/16/32 bit data + 64 bit data on C67x Load-store RISC architecture with 2 data paths 16 32-bit registers per data path (A0-15 and B0-15) 48 instructions (C62x) and 79 instructions (C67x) Two parallel data paths with 32-bit RISC units Data unit - 32-bit address calculations (modulo, linear) Multiplier unit - 16 bit x 16 bit with 32-bit result Logical unit - 40-bit (saturation) arithmetic compares Shifter unit - 32-bit integer ALU and 40-bit shifter Conditionally executed based on registers A1-2 B0-2 Work with two 16-bit halfwords packed into 32 bits C6000 Functional Units .M multiplication unit 16 bit x 16 bit signed/unsigned packed/unpacked .L arithmetic logic unit Comparisons and logic operations (and, or, and xor) Saturation arithmetic and absolute value .S shifter unit Bit manipulation (set, get, shift, rotate) and branching Addition and packed addition .D data unit Load/store t