Single-Chip FaxEngine and Integrated Analog Device
• Microprocessor and Bus Interface Features (Cont’d)
− Moveable external SRAM memory (CS0n)
up to 1 MB
− External ROM memory (covered by ROMCSn)
up to 2 MB
− Internal Interrupt controller
• T.4/T.6 Compression and Decompression in Hardware
− MH/MR
− MMR
− Alternating Compression/Decompression
• Scanner/Printer Stepper Motor Control
− Four outputs to external current drivers for the
scanner stepper motor
− Four outputs to external current drivers for the printer
stepper motor
− Programmable for acceleration/deceleration
• Scanner and Video Control
− CIS or CCD scanners supported
− 6 programmable control signals
− B4/A4 scanner support
− 5 ms minimum line time
− Embedded scanner Pipeline A/D
− Line lengths up to 2616 pixels
− Built-in Programmable Clamping, Analog Gain
Control, and Sample/Hold circuits
• Video Processing
− Two modes of shading correction
− Dark level correction
− Gamma correction and MTF
− 2-D Error Diffusion or Dithering
− Multi-level B4-A4 fixed resolution conversion
• Bi-Level Resolution Conversion
− Programmable bi-level resolution conversion block
provides expansion or reduction on the T.4/T.6
decompressed data or scan image data
− Programmable image expansion up to 200% or
reduction down to 60%
− Vertical line ORing
• Printer Interface Supports Thermal or Thermal Transfer
Printers
• Optional Plain Paper Inkjet Printer Support
• Dedicated Interface to Support Operator Panel
− 32 key direct support
− 8 LED direct support
− LCD support
• Two Synchronous Interface (SSIF)
• Synchronous/Asynchronous Interface (SASIF)
• Programmable Tone Generator
− Frequency and output levels are programmable
Single-Chip FaxEngine Product Family
• General Purpose Inputs/Outputs
− 38 GPIO and 32 GPO lines are provided
• Embedded Modem DSP
− Supports speeds up to 14400 bps and V.21 Channel
2 transmission/reception
− Supports HDLC framing and detection
− Supports DTMF generation/reception
− Supports CID reception
• External Integrated Analog (IA) Device
• Optional DTAM Support
− V24 24 minutes of voice storage per 4 Mbits
of memory
− ADPCM codec
− PCM codec
− Near-end echo cancellation
• Optional Duplex Speakerphone
− Speakerphone IA support
− Acoustic Echo Cancellation
− Line Echo Cancellation or Secondary Acoustic Echo
Cancellation
• Real-Time Clock with Battery Backup
• Programmable Watchdog Timer
• EMI Reduction on Pads
• Stand-by and Sleep Modes to Reduce Power
Consumption
• On-chip or Off-chip Power Up/Down Detection
• 3.3 V Operation
• 3.3 V Compatible Interface
• Compact Packages
− CXD9450-xx: 176-pin TQFP
− 20415-xx: 32-pin TQFP (not shown, refer to
document number 100550)
• Modular Firmware
− Real-time multitasking environment
− Fax transmit, receive, and copy
− T.30 protocol
− T.4/T.6 compression and decompression hardware
support and control
− Image expansion or reduction
− Page memory functions
− Call progress support
− Caller ID support
• Versatile Evaluation System
− Provides demonstration, development and evaluation
capabilities
− MC24 software development tool kit
100544C
Conexant
3