Conexant 公司的CX9543x是单片FaxEngine系列产品,包括了语音通信,目标应用在具有喷墨,激光和热敏打印功能的传真机.片上系统(SoC) CX9543x有嵌入式软调制解调器功能,它采用片内交叉点开关(CPS),扫描模拟前端(AFE),ADC以及可选择的用来和电话线连接的CX20548 SmartDAA.器件包括了开发完整传真机所需的主要的硬件和软件.本文介绍了CX9543x的主要特性和详细的方框图.

Single-Chip FaxEngine Controller (SCE600) CX9543x

The CX9543x Single-Chip FaxEngine family of devices are the most highly integrated fax semiconductor solutions available today. The system-on-chips (SoCs) contain advanced voice communications and are targeted at fax machines with inkjet, laser and thermal printing capabilities. The CX9543x features an embedded softmodem function using integrated on-chip crosspoint-switch (CPS), scanner analog front end (AFE), ADC, and an optional external CX20548 SmartDAA® for interfacing to the telephone line for worldwide (WW) homologation. The devices include all the core hardware and software required to develop a complete fax machine.

The imaging solutions are powered by an integrated 180MHZ 32-RISC processor, a 120MHz digital signal processor (DSP), and three 288 MHz flexible I/O processors to perform various control/monitoring and compression/ decompression functions, as well as scan and print image processing for facsimile applications. The CX9543x SoCs interface to fax machine components such as a scanner, printer, memory card, LCD, motors, and

operator control panel through an I/O pin multiplexer. The SoCs also include direct printer control and USB interfaces.

The CX9543x devices use Conexant’s field-proven V.17 SoftFax technology to enable the transmission of documents. The embedded softmodem function also supports V.29 facsimile transmission and reception, in addition to all basic HDLC functions and T.30 requirements either using the integrated CPS or an external SmartDAA. The CX9543x SoCs feature dual voice ADCs and DACs. Optional features such as voice compression/decompression for digital telephone answering machine (DTAM) and full-duplex speakerphone are also available. The CX9543x SoCs have been designed with many cost-effective features.

The devices are based on Conexant’s Configurable System Solution (CSS) architecture, which allows manufacturers to use a single device for multiple platforms and geographies, and reduce development costs. Conexant’s SmartDAA® technology, available as an option, eliminates the need for costly components required for discrete data access arrangement (DAA) implementations, which significantly reduce bill of material (BOM) costs.

Different feature combinations are available within the SoC family. The options include SmartDAA, USB, V.29, V.17, V.34, DTAM, Speakerphone and Russian CID.

有特色的主要特性:

Distinguishing Features

Integrated voice components

Integrated speaker amplifier

Integrated two-channel fax/voice ADC and DAC

Integrated analog cross point switch

32-bit RISC CPU up to 180MHz

120MHz VLIW DSP for image processing

Three flexible I/O processors up to 288MHz

Integrated fax modem, DTAM and speakerphone

Integrated scanner AFE/ADC and monitor ADC

Uses fourth generation silicon DAA:

CX20548 SmartDAA (optional)

Lower BOM cost, worldwide support with single SKU

USB 2.0 full speed device/host port (optional)

主要特性:

Integrated CPS AFE

Speaker amplifier

Handset speaker driver

Line-out/RF-out/doorphone-out drivers

Microphone and handset microphone inputs with PGA

Line-in/RF-in/doorphone-in with PGA

Cross point switch with total four inputs, four outputs, two ADC and two DAC channels

Power down mode

32-bit RISC CPU – up to 180MHz

Embedded image processing VLIW DSP – up to 120MHz

Bad pixel correction

Dark level and shading correction

Linearization

Resolution conversion

Sharpening

Error diffusion

Background removal

JBIG compression/decompression

Three flexible I/O processors up to 288MHz – support a variety of system configurations

Scanner control

Direct thermal, thermal transfer, inkjet and laser print engine direct control

Stepper and DC motor control

Memory card interface

Graphic LCD control

SDRAM 16-bit, 16/64/128/256Mbits – up to 120MHz

Integrated scanner AFE/ADC and monitor ADC

1.5MHz 11-bit Scanner ADC

16-bit monitor ADC with a four-channel inputs

Integrated fax modem (SoftFax)

Sleep mode to reduce power consumption

Real time clock with battery backup

High-speed UART with hardware flow control and IrDA support

High-speed SPI interface for serial flash memory

Optional USB 2.0 full speed device/host port

Optional fourth generation silicon DAA: CX20548 SmartDAA

Lower BOM cost, worldwide support with single SKU

Optional voice compression/decompression for digital telephone answering machine (DTAM) application

Optional full-duplex speakerphone function

3.3V single power supply or 3.3V/1.25V dual supply operation

Compact lead-free (Pb-free) package

CX9543X FaxEngine Controller: 176-pin epTQFP

Optional CX20548 SmartDAA: 16-pin QFN

图1.CX95430的方框图.

详情请见:

http://www.conexant.com/servlets/DownloadServlet/PBR-201756-001.pdf?docid=1757&revid=1