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ASX340AT датащи(PDF) 21 Page - ON Semiconductor |
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ASX340AT датащи(HTML) 21 Page - ON Semiconductor |
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21 / 54 page ![]() ASX340AT www.onsemi.com 21 TABLE 14. SPI COMMANDS SUPPORTED Command Value Read Array 0x03 Block Erase 0 x D8 Chip Erase 0 x C7 Read Status 0 x 05 Write status 0 x 01 Byte Page Program 0 x 02 Write Enable 0 x 06 Write Disable 0 x 04 Read Manufacturer and Device ID 0 x 9F (Fast) Read Array 0 x 0B TABLE 15. GPIO BIT DESCRIPTIONS GPIO[11] (DOUT_LSB1) GPIO[10] (DOUT_LSB0) GPIO[9] (FRAME_VALID GPI[8] (LINE_VALI Low (“0”) Normal NTSC Normal No pedestal High (“1”) Vertical Flip PAL Horizontal mirror Pedestal Host Command Interface ON Semiconductor sensors and SOCs contain numerous registers that are accessed through a two-wire interface with speeds up to 400 kHz. The ASX340AT in addition to writing or reading straight to/from registers or firmware variables, has a mechanism to write higher level commands, the Host Command Interface (HCI). Once a command has been written through the HCI, it will be executed by on-chip firmware and the results are reported back. In general, registers should not be accessed with the exception of registers that are marked for “User Access.” EEPROM or Flash memory is also available to store commands for later execution. Under DMA control, a command is written into the SOC and executed. For a complete description of host commands, refer to the ASX340AT Host Command Interface Specification. |
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