CX20805 Features
DSP
Dual core 32-bit DSP running at 200 MHz, which yields 800 MIPS
DSP has separate X and Y data and P code memory
Fixed point DSP, with floating point assist
Each core is dual MAC and dual memory access.
Each MAC supports 32x24-bit multiplication and 64-bit accumulators.
Peripherals (continued)
Six 32-bit timers/counters
Serial peripheral interface (SPI) Master and Slave
Inter-Integrated Circuit (I
2
C) Master and Slave
1 UART Serial interface
Dedicated peripheral and memory-to-memory DMAs channels
Interrupt controller
24 Flexible I/Os (FlexIO) fully programmable through integrated
PIC processor
2 sets of 3 LED PWM drivers
6 dedicated general-purpose I/Os (GPIOs),
Dedicated AES128 decryption engine.
Debug/JTAG interface and On chip logic analyzer
On-chip programmable PLLs
Advanced power management
On Chip Memory
Large embedded memory 520KB SRAM and 352KB ROM.
Separate X and Y data and P code memory spaces.
Peripherals
High Speed USB2.0 Device, supporting up to eight endpoints
Quad Digital microphone PDM interface
SPDIF Transmitter and SPDIF receiver
Full duplex stereo I
2
S/PCM
Custom Conexant Audio Bus (CAB) to connect to multi-channel
Conexant audio devices
Software
Small footprint Real time Operating System
Configuration Toolbox
Details of DSP algorithms coming soon
PMC
DCDC
PLLs
D MAs
Tim e rs
OC LA
C o n e xa n t
A u d io B u s
USB2.0 HS
P IC, G P IO
,
PWM
32-Bit DSP 0
(CAPE 0)
32-Bit DSP 1
(CAPE 1)
S P I M a ste r
X
Y
P
X
Y
P
I
2
S/PCM
I
2
C Master
B rid g e
S P D IF TX
P S R A M/ROM
U AR T
X S R A M/ROM
S P D IF R X
I
2
C/SPI Slave
Y S R A M/ROM
Quad Dig. Mic/
PDM
JTA G
AES Decryptor
Block Diagram
Distributor/Representative Information
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publications, this material may contain errors
or omissions and is subject to change without
notice.
THIS MATERIAL IS PROVIDED AS IS
AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING MERCHANT
ABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NON-INFRINGEMENT.
Conexant shall not be liable for any special,
indirect, incidental or consequential damages
as a result of its use.
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Doc# PBR-202940
CONEXANT [ CONEXANT SYSTEMS, INC ]
