The TMS320C6745/6747 device is a low-power digital signal processor based on
a TMS320C674x DSP core. It consumes significantly
lower power than other members of the TMS320C6000
platform of DSPs.
The TMS320C6745/6747 device enables original-equipment manufacturers (OEMs) and
original-design manufacturers (ODMs) to quickly bring to market devices featuring
processing performance .
The TMS320C6745/6747 DSP core uses a two-level cache-based architecture. The
Level 1 program cache (L1P) is a 32-KB direct mapped cache and the Level 1 data cache (L1D) is a
32-KB 2-way set-associative cache. The Level 2 program cache (L2P) consists of a 256-KB memory
space that is shared between program and data space. L2 memory can be configured as mapped memory,
cache, or combinations of the two. Although the DSP L2 is accessible by other hosts in the system, an additional 128KB of RAM shared memory
(TMS320C6747 only) is available for use by other hosts without
affecting DSP performance.
The peripheral set includes: a 10/100 Mbps Ethernet MAC (EMAC) with a management data
input/output (MDIO) module; two I2C Bus interfaces; 3 multichannel audio
serial ports (McASPs) with 16/9
serializers and FIFO buffers; two 64-bit general-purpose timers each configurable (one configurable
as watchdog); a configurable 16-bit host-port interface (HPI) [TMS320C6747
only]; up to 8 banks of 16 pins of general-purpose input/output (GPIO) with programmable
interrupt/event generation modes, multiplexed with other peripherals; 3 UART interfaces (one with
both RTS and CTS); three enhanced high-resolution
pulse width modulator (eHRPWM) peripherals; three 32-bit enhanced capture (eCAP) module peripherals
which can be configured as 3 capture inputs or 3 auxiliary pulse width modulator (APWM) outputs;
two 32-bit enhanced quadrature encoded pulse (eQEP) peripherals; and 2 external memory interfaces:
an asynchronous and SDRAM external memory interface (EMIFA) for slower memories or peripherals, and
a higher speed memory interface (EMIFB) for SDRAM.
The Ethernet Media Access Controller (EMAC) provides an efficient interface between the
TMS320C6745/6747 device and
the network. The EMAC supports both 10Base-T and 100Base-TX, or 10 Mbps and 100 Mbps in either
half- or full-duplex mode. Additionally, an MDIO interface is available for PHY configuration.
The rich peripheral set provides the ability to control external peripheral devices
and communicate with external processors. For details on each of the peripherals, see the related
sections later in this document and the associated peripheral reference guides.
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