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TMS320C6454 データシート(Datasheet) 3 Page - Texas Instruments

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部品番号. TMS320C6454
部品情報  Fixed-Point Digital Signal Processor
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メーカー  TI [Texas Instruments]
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TMS320C6454
Fixed-Point Digital Signal Processor
SPRS311A – APRIL 2006 – REVISED DECEMBER 2006
The C64x+ DSP core employs eight functional units, two register files, and two data paths. Like the earlier
C6000 devices, two of these eight functional units are multipliers or .M units. Each C64x+ .M unit doubles
the multiply throughput versus the C64x core by performing four 16-bit x 16-bit multiply-accumulates
(MACs) every clock cycle. Thus, eight 16-bit x 16-bit MACs can be executed every cycle on the C64x+
core. At a 1-GHz clock rate, this means 8000 16-bit MMACs can occur every second. Moreover, each
multiplier on the C64x+ core can compute one 32-bit x 32-bit MAC or four 8-bit x 8-bit MACs every clock
cycle.
The C6454 DSP integrates a large amount of on-chip memory organized as a two-level memory system.
The level-1 (L1) program and data memories on the C6454 device are 32KB each. This memory can be
configured as mapped RAM, cache, or some combination of the two. When configured as cache, L1
program (L1P) is a direct mapped cache where as L1 data (L1D) is a two-way set associative cache. The
level 2 (L2) memory is shared between program and data space and is 1048KB in size. L2 memory can
also be configured as mapped RAM, cache, or some combination of the two. The C64x+ Megamodule
also has a 32-bit peripheral configuration (CFG) port, an internal DMA (IDMA) controller, a system
component with reset/boot control, interrupt/exception control, a power-down control, and a free-running
32-bit timer for time stamp.
The peripheral set includes: an inter-integrated circuit bus module (I2C); two multichannel buffered serial
ports (McBSPs); a user-configurable 16-bit or 32-bit host-port interface (HPI16/HPI32); a peripheral
component interconnect (PCI); a 16-pin general-purpose input/output port (GPIO) with programmable
interrupt/event generation modes; an 10/100/1000 Ethernet media access controller (EMAC), which
provides an efficient interface between the C6454 DSP core processor and the network; a management
data input/output (MDIO) module (also part of the EMAC) that continuously polls all 32 MDIO addresses in
order to enumerate all PHY devices in the system; a glueless external memory interface (64-bit EMIFA),
which is capable of interfacing to synchronous and asynchronous peripherals; and a 32-bit DDR2 SDRAM
interface.
The I2C ports on the C6454 allows the DSP to easily control peripheral devices and communicate with a
host processor. In addition, the standard multichannel buffered serial port (McBSP) may be used to
communicate with serial peripheral interface (SPI) mode peripheral devices.
The C6454 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.
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TMS320C6454 Fixed-Point Digital Signal Processor
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