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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SCAS290 датащи(PDF) 47 Page - Texas Instruments |
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SCAS290 датащи(HTML) 47 Page - Texas Instruments |
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47 / 53 page  www.ti.com USB-MODEVM Protocol Do the same with a fast mode I 2C device: [0] 0x12 [1] 0xA0 [2] 0x02 [3] 0x05 [4] 0xAA [5] 0x55 Now with an SPI device which uses an 8-bit register address: [0] 0x10 [1] 0xA0 [2] 0x02 [3] 0x05 [4] 0xAA [5] 0x55 Now, do a 16-bit register address, as found on parts like the TSC2101. Assume the register address (command word) is 0x10E0: [0] 0x14 [1] 0x10 → Note: the I 2C address now serves as MSB of reg address. [2] 0x02 [3] 0xE0 [4] 0xAA [5] 0x55 In each case, the TAS1020 returns, in an HID interrupt packet, the following: [0] interface byte | status status: REQ_ERROR 0x80 INTF_ERROR 0x40 REQ_DONE 0x20 [1] for I 2C interfaces, the I2C address as sent for SPI interfaces, the read back data from SPI line for transmission of the corresponding byte [2] length as sent [3] for I 2C interfaces, the reg address as sent for SPI interfaces, the read back data from SPI line for transmission of the corresponding byte [4..60] echo of data packet sent 41 SLAU266A – October 2008 – Revised October 2012 USB-MODEVM Protocol Submit Documentation Feedback Copyright © 2008–2012, Texas Instruments Incorporated |
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