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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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M50FW080 Scheda tecnica(PDF) 33 Page - STMicroelectronics |
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M50FW080 Scheda tecnica(HTML) 33 Page - STMicroelectronics |
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33 / 56 page  M50FW080 Firmware Hub (FWH) interface Configuration Registers 33/55 6.1.3 Lock Down The Lock Down Bit provides a mechanism for protecting software data from simple hacking and malicious attack. When the Lock Down Bit is set, ‘1’, further modification to the Write Lock, Read Lock and Lock Down Bits cannot be performed. A reset or power-up is required before changes to these bits can be made. When the Lock Down Bit is reset, ‘0’, the Write Lock, Read Lock and Lock Down Bits can be changed. 6.2 Firmware Hub (FWH) General-Purpose Input Register The Firmware Hub (FWH) General Purpose Input Register holds the state of the Firmware Hub Interface General Purpose Input pins, FGPI0-FGPI4. When this register is read, the state of these pins is returned. This register is read-only and writing to it has no effect. The signals on the Firmware Hub Interface General Purpose Input pins should remain constant throughout the whole Bus Read cycle in order to guarantee that the correct data is read. Table 11. Firmware Hub Register Configuration map Mnemonic Register Name Memory Address Default Value Access T_BLOCK_LK Top Block Lock Register (Block 15) FBF0002h 01h R/W T_MINUS01_LK Top Block [-1] Lock Register (Block 14) FBE0002h 01h R/W T_MINUS02_LK Top Block [-2] Lock Register (Block 13) FBD0002h 01h R/W T_MINUS03_LK Top Block [-3] Lock Register (Block 12) FBC0002h 01h R/W T_MINUS04_LK Top Block [-4] Lock Register (Block 11) FBB0002h 01h R/W T_MINUS05_LK Top Block [-5] Lock Register (Block 10) FBA0002h 01h R/W T_MINUS06_LK Top Block [-6] Lock Register (Block 9) FB90002h 01h R/W T_MINUS07_LK Top Block [-7] Lock Register (Block 8) FB80002h 01h R/W T_MINUS08_LK Top Block [-8] Lock Register (Block 7) FB70002h 01h R/W T_MINUS09_LK Top Block [-9] Lock Register (Block 6) FB60002h 01h R/W T_MINUS10_LK Top Block [-10] Lock Register (Block 5) FB50002h 01h R/W T_MINUS11_LK Top Block [-11] Lock Register (Block 4) FB40002h 01h R/W T_MINUS12_LK Top Block [-12] Lock Register (Block 3) FB30002h 01h R/W T_MINUS13_LK Top Block [-13] Lock Register (Block 2) FB20002h 01h R/W T_MINUS14_LK Top Block [-14] Lock Register (Block 1) FB10002h 01h R/W T_MINUS15_LK Top Block [-15] Lock Register (Block 0) FB00002h 01h R/W FGPI_REG Firmware Hub (FWH) General Purpose Input Register FBC0100h N/A R MANUF_REG Manufacturer Code Register FBC0000h 20h R DEV_REG Device Code Register FBC0001h 2Dh R |
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