Fax capabilities are important in many embedded applications. For flexible system design in multifunction printers and fax machines, choose from three types of fax modems:

  • CFAX: Controller-based fax modem devices are a complete modem solution including a system controller and digital signal processor (DSP) for signal processing
  • DP5: Data Pump fax modem devices include a DSP for signal processing and require the system controller to be run on the host processor
  • SFAX: Soft fax modem includes only the interface to the CSP1040, and require the host processor to run the system controller and DSP firmware

All modems are paired with a common CSP1040 direct-access arrangement (DAA) telephone line interface device for a complete solution.

FEATURES CFAX34 CFAX17 CSP1040E
V.34 fax Yes No N/A
V.17 fax Yes Yes N/A
Power Supply Single 3.3V Single 3.3V Single 3.3V
Package 48-pin TQFP 48-pin TQFP 20-pin ETSSOP

FEATURES DP5V34 DP5V17 CSP1040E
V.34 fax Yes No N/A
V.17 fax Yes Yes N/A
Power Supply Single 3.3V Single 3.3V Single 3.3V
Package 24-pin MLCC 24-pin MLCC 20-pin ETSSOP

FEATURES SFAX34 SFAX17 CSP1040E
V.34 fax Yes No N/A
V.17 fax Yes Yes N/A
Power Supply Single 3.3V Single 3.3V Single 3.3V
Package 48-pin TQFP 48-pin TQFP 20-pin ETSSOP