Conexant CX92235彩色激光打印机图像解决方案

Conexant 公司的CX92235是高度集成的彩色激光打印机图像解决方案和系统级芯片,采用功能强大的RM 926EJ-S内核和存储器管理单元,是彩色和黑白激光打印机和喷墨多功能打印机(MFP)以及数字图片打印机的完整控制方案.器件集成了许多先进的技术特性,提升了像素处理速度和输出图像质量.本文介绍了CX92235的主要特性,优势和完整的方框图.

Conexant’s product line of highly integrated imaging solutions and system-on-chips (SoCs) is one of the most complete in the industry. The CX92235 (DC2350) is a comprehensive controller solution for color and monochrome laser and inkjet multi-function printers (MFPs) and digital photo printers. The device integrates many advanced technical features that improve the pixel processing speed as well as the output image quality. The modular design of the firmware allows manufacturers to develop multiple products with a single imaging SoC, which reduces engineering development and bill-of-material (BOM) costs.

The CX92235 features very high-speed hardware image processing accelerators, system I/O and a powerful ARM 926EJ-S core with a memory management unit and a vector floating point processor to deliver the power required for high-speed imaging applications. The high performance imaging processor along with additional imaging hardware blocks enables fast raster image processing (RIP) for page description languages (PDLs), which improves complex text and graphics laserprinting speeds. The CX92335 has market-leading color copying speeds of up to 30 pages per minute.
Other key features include support for tandem color laser printers and a dual-image-pipeline architecture that automatically segments texts from photos, and optimally processes the images without degrading system performance. A complete hardware and software development kit is offered to simplify product-development efforts and allows designers to
deliver product to market more quickly.

The CX92235 integrates many advanced features such as an Ethernet MAC, a memory card controller, a LCD controller, and contains an enhanced image processing pipeline that improves the pixel processing speed as well as the output image quality. Two USB 2.0 high-speed ports and a peripheral bus support connections to cameras, memory cards and USB peripherals, including Bluetooth® and WiFi® 802.11 b/g/n devices, and V.34 fax modems.

CX92235主要优势:
Highly integrated SoC design for lowest BOM cost
Provides high-quality imaging capabilities
Supports tandem color laser printer engine
Allows fast RIP for network printing and PC-less PDF printing
Save development costs and time by designing one controller platform for your family of laser and inkjet printers, photo printers and MFPs

CX92235主要特性:
Printer Support
Up to 120 pages per minute (ppm) tandem color laser printing of 4-bit contone data
USB 2.0 high-speed and 10/100 Ethernet printing supported
Scalable support for both graphics device interface (GDI) and page description language (PDL)-based printing
Scanner Support
Up to 30 images per minute (ipm) color scanning at 600 dpi
Flatbed and automatic document feeder (ADF) scanners supported, including timing and motor control
Charge-coupled device/contact image sensor (CCD/CIS) control
Scan pre-processing supports gamma, shading, white-level and black-level corrections, 3xCIS data arrangement support
Copier Support
Up to 30 copies per minute (cpm) ADF multi-page color copying at 600 dpi scan and print
Tunable photo/text segmentation logic ensures best copy quality of mixed images
Independent finite impulse response (FIR) filters, color space conversion tables and dither tables for photo and text
Capable of direct memory accessing (DMAing) RGB pixels to external counterfeit detection ASIC
Fax Support
Fax controller with complete protocol stack for leading Conexant fax modems
External Memory Support
DDR2-533 supported: Up to 1 GB of system memory
Field upgradeable using DIMM
Connectivity/Interfaces
USB 2.0 high-speed device and hosts
Synchronous serial bus configurable for: 1-bit, 4-bit or 8-bit ighspeed MMC/SD/SDIO; 4-bit or 8-bit CE-ATA mode; SPI; 1-bit MS; TI SSI
I2C
UARTs
Thin Film Transitor (TFT) or Super-twisted Nematic Display (STN) graphical LCD controller
Counterfeit detection chip interface
Processor/CPU
32-bit, RISC microprocessor with Memory Management Unit (MMU) and vector floating point processor
Compact 16-/32-bit bit instruction set, offering reduced code size and higher performance
Development Environment
Conexant’s Integrated Development Environment (IDE)
C/C++ Compiler/Assembler/Linker
PC Command Line Debugger/Profiler
JTAG Emulator/ICE and Debugger



图1.CX92235 方框图