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CXD9450-25 Datasheet(PDF) 7 Page - List of Unclassifed Manufacturers |
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CXD9450-25 Datasheet(HTML) 7 Page - List of Unclassifed Manufacturers |
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7 / 16 page  Single-Chip FaxEngine and Integrated Analog Device Single-Chip FaxEngine Product Family 100544C Conexant 7 Stand-by and Sleep Modes Two power saving modes are provided to reduce the power consumption. In Stand-by mode, the CPU is functional but the modem clock is turned off to save power. When this occurs, the modem may be activated by software under different conditions. In Sleep mode, the clock is cut off from both the modem and the CPU to increase the power savings. The DRAM refresh is still functional. The system can be activated by paper insertion, key pressing events, and telephone ring detection. Embedded Modem DSP The embedded modem DSP is a synchronous 9600 bps (14400 bps optional) half-duplex modem with error detection and DTMF generation/reception. It provides data transmission/reception from regular PSTN lines, PBX, or private lines. The modem can operate at any standard V.29 data speed up to 9600 bps as well as in V.21 and V.23 modes. The modem is designed for use in Group 3 facsimile machines, satisfies the requirements specified in ITU-T recommendations V.29, V.27 ter, V.21 Channel 2, and T.4, and meets the signaling requirements of T.30. It also performs HDLC framing according to T.30 at all speeds. Software and Firmware Support Features Available software and embedded firmware provides the following: • Modem support for speeds up to 9600 bps (V.17 optional) • ECM under conditional assembly • DRAM memory support under conditional assembly • MH, MR and MMR support • Page memory receiving • 5 ms minimum scan line time • Conditional Error Diffusion or Dither table (8x8) support • Dark Level Correction support • Single motor support • 32-key operator panel support • Call progress support for Europe and US • Monochrome inkjet print engine support CXD9450 Pin Assignments and Signal Definitions The CXD9450 176-pin TQFP signals are shown in Figure 2 and listed in Table 1. Power Requirements Power requirements are listed in Table 2. Absolute Maximum Ratings Absolute maximum ratings are listed in Table 3. Crystal Specifications The crystal specifications are listed in Table 4. Package Dimensions The 176-pin TQFP package dimensions are shown in Figure 3. |
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