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C161 Datasheet(PDF) 247 Page - Infineon Technologies AG |
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C161 Datasheet(HTML) 247 Page - Infineon Technologies AG |
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247 / 400 page  &3, 7KH +LJK6SHHG 6\QFKURQRXV 6HULDO ,QWHUIDFH User’s Manual 12-1 1999-08 12 The High-Speed Synchronous Serial Interface The High-Speed Synchronous Serial Interface SSC provides flexible high-speed serial communication between the C161PI and other microcontrollers, microprocessors or external peripherals. The SSC supports full-duplex and half-duplex synchronous communication up to 6.25 MBaud (@ 25 MHz CPU clock). The serial clock signal can be generated by the SSC itself (master mode) or be received from an external master (slave mode). Data width, shift direction, clock polarity and phase are programmable. This allows communication with SPI-compatible devices. Transmission and reception of data is double-buffered. A 16-bit baud rate generator provides the SSC with a separate serial clock signal. The high-speed synchronous serial interface can be configured in a very flexible way, so it can be used with other synchronous serial interfaces (e.g. the ASC0 in synchronous mode), serve for master/slave or multimaster interconnections or operate compatible with the popular SPI interface. So it can be used to communicate with shift registers (IO expansion), peripherals (e.g. EEPROMs etc.) or other controllers (networking). The SSC supports half-duplex and full-duplex communication. Data is transmitted or received on pins MTSR/P3.9 (Master Transmit / Slave Receive) and MRST/P3.8 (Master Receive / Slave Transmit). The clock signal is output or input on pin SCLK/P3.13. These pins are alternate functions of Port 3 pins. Figure 12-1 SFRs and Port Pins associated with the SSC SCLK / P3.13 MTSR / P3.9 MRST / P3.8 ODP3Port 3 Open Drain Control Register DP3Port 3 Direction Control Register SSCBRSSC Baud Rate Generator/Reload Reg. SSCTBSSC Transmit Buffer Register SSCTICSSC Transmit Interrupt Control Register P3 Port 3 Data Register SSCCONSSC Control Register SSCRBSSC Receive Buffer Register SSCRICSSC Receive Interrupt Control Register SSCEICSSC Error Interrupt Control Register ODP3 E Ports & Direction Control Alternate Functions Data Registers Control Registers Interrupt Control SSCBR E SSCCON SSCTIC DP3 P3 SSCTB E SSCRB E SSCRIC SSCEIC |
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