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MSC1202Y2RHHT датащи(PDF) 53 Page - Texas Instruments |
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MSC1202Y2RHHT датащи(HTML) 53 Page - Texas Instruments |
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53 / 92 page ![]() MSC1200 MSC1201 MSC1202 SBAS317E − APRIL 2004 − REVISED MAY 2006 www.ti.com 53 Serial Data Buffer 0 (SBUF0) 7 6 5 4 3 2 1 0 Reset Value SFR 99h 00h SBUF0 Serial Data Buffer 0. Data for Serial Port 0 is read from or written to this location. The serial transmit and receive bits 7−0 buffers are separate registers, but both are addressed at this location. SPI Control (SPICON) 7 6 5 4 3 2 1 0 Reset Value SFR 9Ah SBIT3 SBIT2 SBIT1 SBIT0 ORDER CPHA ESS CPOL 00h SBIT3−0 Serial Bit Count. Number of bits transferred (read-only). bits 7−4 SBIT3:0 COUNT 0x00 0 0x01 1 0x03 2 0x02 3 0x06 4 0x07 5 0x05 6 0x04 7 0x0C 8 ORDER Set Bit Order for Transmit and Receive. bit 3 0: Most significant bits first 1: Least significant bBits first CPHA Serial Clock Phase Control. bit 2 0: Valid data starting from half SCK period before the first edge of SCK 1: Valid data starting from the first edge of SCK ESS Enable Slave Select. bit 1 0: SS (P1.4) is configured as a general-purpose I/O (default). 1: SS (P1.4) is configured as SS for SPI mode. DOUT (P1.2) drives when SS is low, and DOUT (P1.2) is high-impedance when SS is high. CPOL Serial Clock Polarity. bit 0 0: SCK idle at logic low 1: SCK idle at logic high |
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