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SX8652ICSTRT Datasheet(PDF) 21 Page - Semtech Corporation |
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SX8652ICSTRT Datasheet(HTML) 21 Page - Semtech Corporation |
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21 / 29 page  Revision V1.7/October 2010 ©2010 Semtech Corp. SX8652 www.semtech.com Page 21 ADVANCED COMMUNICATIONS & SENSING DATASHEET 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface Figure 17. Data channel format 9.5. Invalid Qualified Data The SX8652 returns 0xFFFF data in case of invalid qualified data. This occurs: When the SX8652 has read all the channel data in the FIFO When a conversion is done without a pen being detected. NCS SCLK DIN DOUT 11 10 9 8 7 6 5 4 3 2 1 0 0 0 1 11 10 9 8 7 6 5 4 3 2 1 0 Reading Channel Data NCS SCLK DIN DOUT 7 6 5 4 3 2 1 0 0 1 0 RA[4:0] Reading Register 7 6 5 4 3 2 1 0 NCS SCLK DIN DOUT 0 0 0 RA[4:0] Writing Register 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 Multiple Write Single Write Multiple Read Single Read Multiple Read Single Read NCS SCLK DIN DOUT Other command CMD Unknown bit Multiple access Single access |
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