A vehicle-mounted built-in TF map data updating circuit and method
A technology of map data and updating circuits, which is applied in the direction of electrical digital data processing, instruments, etc., can solve the problems that the navigation map cannot be used normally, is inconvenient to use, and affects the appearance of the equipment, so as to achieve convenient application, simple circuit, and reduce the trouble of disassembly Effect
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[0032] see figure 1 As shown, in the present embodiment, a vehicle built-in TF map data update circuit includes:
[0033] HUB chip U1 is used to support extended multi-channel USB, including one USB input interface, one USB output interface and one SDIO interface; the one USB input interface includes USB positive signal input interface DP1 and USB negative signal input interface DM1; the USB The output interface includes a positive signal output interface DP and a negative signal output interface DM;
[0034] TF card interface circuit U2, used for storing navigation map data, is connected with described HUB chip U1 through SDIO interface;
[0035] The USB interface U3 on the navigation screen panel is connected with the user terminal (notebook computer, PC, handheld device, etc.) to receive the navigation map data to be updated; it includes a USB data terminal, and the USB data terminal includes a USB data positive signal interface DP And USB data negative signal interface D...
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