Freescale Semiconductor, Inc.
HYBRID MCU/DSP
56857
120 MIPS Hybrid Processor
TARGET APPLICATIONS
鈥?Multi-processor Telephony
Systems
鈥?Stand-alone MP3 player
鈥?DTAD
鈥?Feature phone
鈥?Voice recognition and command
鈥?Embedded modem/data pump
鈥?LCD and keypad support
鈥?General purpose devices
鈥?Automotive hands-free
BENEFITS
鈥?Easy to program with flexible
application development tools
鈥?Supports multiple processor
connections
鈥?16-bit quad timer module (with four
external pins) that allows
capture/compare functionality, and can
be cascaded
鈥?Quad timer module can also be used for
simple digital-to-analog conversion
functionality
鈥?Enhanced synchronous serial interface
with enhanced network and audio modes
鈥?Time of Day for applications requiring
clock display
鈥?Flexible 6-Channel Direct Memory
Access (DMA) allows both internal and
external memory transfers with almost
no CPU interruption
鈥?Serial peripheral interface with master
and slave mode supporting connection
to other processors or serial memory
devices
鈥?Two enhanced synchronous serial
interfaces with three transmitters per
module provide support for
5.1 channel surround sound for audio
applications
Freescale Semiconductor, Inc...
The 56857 offers a rich feature set and on-chip
memory in a 100-pin LQFP. It includes 80 KB of
on-chip program SRAM and 48 KB of on-chip data
SRAM. With two enhanced serial synchronous
serial interfaces (ESSIs), this device can provide
outputs for 5.1-channel surround sound. The 56857
can be designed into multi-processor systems to
provide internet audio and speech processing
functionalities.
56857 16-BIT DIGITAL SIGNAL PROCESSORS
鈥?120 MIPS at 120MHz
鈥?80 KB Program SRAM
鈥?48 KB Data SRAM
鈥?2 KB Boot ROM
鈥?Six independent channels of DMA
鈥?Two Enhanced Synchronous Serial
Interfaces (ESSI)
鈥?Two Serial Communication Interfaces
(SCI)
鈥?Serial Peripheral Interface (SPI)
鈥?8-bit parallel Host Interface
鈥?General purpose 16-bit Quad Timer
鈥?JTAG/Enhanced On-Chip Emulation
(OnCE鈩? for unobtrusive, real-time
debugging
鈥?Computer Operating Properly
(COP)/Watchdog Timer
鈥?Time of Day (TOD)
鈥?100-pin LQFP package
鈥?Up to 47 GPIO
COP/Watchdog
Program Memory
鈥?Four dedicated GPIO
ENERGY INFORMATION
80 KB SRAM
6-channel DMA
Prog Chip Selects
Up to 47 GPIO
16-Bit Quad Timer
Time of Day
Data Memory
2 KB Boot ROM
SPI
鈥?Fabricated in high-density CMOS with
3.3V, TTL-compatible digital inputs
鈥?Wait and Stop modes available
(2) SCI
(2) ESSI
56800E Core
120 MIPS
PLL
48 KB SRAM
JTAG/EOnCE
8-Bit Host
For More Information On This Product,
Go to: www.freescale.com
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