Digital Signal Processors
MSC8251 High-Performance DSP
Single-core programmable DSP for medical imaging, aerospace, defense and advanced
test and measurement
Overview
The MSC8251 DSP delivers a high level of
The MSC8251 embeds a substantial amount
The MSC8251 is based on the industry's
performance and integration, with a fully
of internal memory to support a variety
highest performance DSP core, built on
programmable SC3850 core running at up
of advanced high-speed interface types,
StarCore technology, and designed for the
to 1 GHz. The SC3850 DSP core has been
including two Serial RapidIO® interfaces,
advanced processing requirements and
independently assessed to enable 40 percent
two Gigabit Ethernet interfaces for network
capabilities of today’s high-end medical
more processing capability per MHz than the
communications, a PCI Express® interface,
imaging, aerospace, defense and advanced
nearest DSP competition. A high-performance
two DDR controllers for high-speed, industry
test and measurement markets. It delivers
internal RISC-based QUICC Engine
standard memory interface and four multi-
industry-leading performance, leveraging
subsystem supports multiple networking
channel TDM interfaces.
45 nm process technology in a highly
protocols to guarantee reliable data transport
integrated DSP to provide performance of
over packet networks while significantly
1 GHz. The MSC8251 will help equipment
offloading processing from the DSP cores.
manufacturers create end products and
The MSC8251 allows a high degree of
scalability through pin compatibility with all
MSC825x and MSC815x DSP devices.
services that integrate more functionality in
a smaller hardware footprint.
MSC8251 Block Diagram
DDR Interface 64/32-bit 800 MHz
DDR Interface 64/32-bit 800 MHz
DDR2/DDR3
DDR2/DDR3
SDRAM Controller SDRAM Controller
JTAG
I/O Interrupt
Concentrator
M3 Memory
1056 KB
UART
Clocks
Timers
CLASS
Reset
SC3850 DSP Core
32 KB L1
I-Cache
32 KB L1
D-Cache
DMA
4
TDMs
QUICC Engine
Subsystem
Two
SGMII
High-Speed
Serial Interface
Semaphores
Virtual
Interrupts
Boot ROM
512 KB L2 Cache/
M2 Memory
I2C
Other
Modules
DSP Core at 1 GHz
Four TDMs Each
Supporting 8 E1
Two RGMII
SPI
Two Serial RapidIO® Interfaces
x1/x4 3.125 Gbaud
PCI Express® Interface x1/x2/x4
Two SGMII
Features and Benefits
• One StarCore DSP SC3850 core subsystem
operating at up to 1 GHz/8000 MMACS
and up to 32000 MMACS
• Two master buses for data transfers
from/to the system memory at total
throughput up to 50 Gbps
• High-speed, high-bandwidth CLASS
fabric arbitrates between the DSP core
• HSSI that supports two x4 SerDes ports,
including:
x1/x4 operation up to 3.125 Gbaud
One PCI Express interface that supports
x1/x2/x4 operation
Multiplexing capability for RapidIO,
PCI Express and SGMII signals through
the two SerDes ports
• Four TDM interfaces
M3 memory, DDR controllers and the
• UART and I2C interfaces
configuration registers
• Two DDR controllers with up to 400 MHz
clock (800 MHz data) rate and 32/64-bit
DDR2/3 SDRAM data bus. Supports
SODIMMs and up to 2 GB per controller
• 32-channel DMA controller
• Dual RISC core QUICC Engine subsystem
operating at up to 500 MHz provides
parallel packet processing independent of
the DSP cores
Supports:
Two Gigabit Ethernet controllers
supporting RGMII or SGMII
SPI
Freescale supplies a complete set of
Two Serial RapidIO interfaces supporting
and other CLASS masters to M2 memory,
Development Support
CodeWarrior DSP development tools for
the MSC8251 device. The tools provide
easier, more robust ways for designers to
develop optimized DSP and gives designers
everything they need to exploit the advanced
capabilities of the MSC8251 architecture.
Support tools include:
• Eclipse-based integrated development
environment (IDE)
• Eight software watchdog timers
• C and C++ compiler with in-line assembly
• Sixteen 16-bit timers
• Librarian
• Two 32-bit general-purpose timers per core
• Multicore debugger
for RTOS support
• Royalty-free RTOS
• I/O interrupt concentrator and virtual
interrupt support
• Software simulator
• Profiler
• Eight hardware semaphores
• 32 GPIO ports multiplexed with interface
signals and IRQ inputs
• Boot options: Ethernet, Serial RapidIO, I2C
and SPI
• High-speed run control
• Host platform support
• MSC8156ADS development board
• MSC8156EVM evaluation module
• Three input clocks and five PLLs
Contact your local sales office or
• JTAG Test Access Port (TAP) and boundary
representative for availability.
scan architecture designed to comply with
IEEE 1149.1™ standard for profiling and
performance monitoring support
• Reduced power dissipation with wait,
stop and power down low-power
standby modes
• Optimized power management circuitry
• Technology: CMOS 45 nm SOI technology
in 29 x 29 mm, 783 ball, FC-PBGA package
Learn More:
Freescale, the Freescale logo, CodeWarrior and StarCore are trademarks of Freescale Semiconductor, Inc. Reg. U.S. Pat. & Tm. Off.
QUICC Engine is a trademark of Freescale Semiconductor, Inc. All other product or service names are the property of their respective
owners. © 2010 Freescale Semiconductor, Inc.
Document Number: MSC8251FS
REV 1
For current information about Freescale
products and documentation, please visit
freescale.com/DSP.
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