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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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USB2524 bảng dữ liệu(PDF) 27 Page - SMSC Corporation |
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USB2524 bảng dữ liệu(HTML) 27 Page - SMSC Corporation |
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27 / 57 page  USB MultiSwitchTM Hub Datasheet SMSC USB2524 27 Revision 1.91 (08-22-07) DATASHEET 7.1.4.14 Register 0Dh: Max Power For Bus Powered Operation (Reset = 0x00) 7.1.4.15 Register 0Eh: Hub Controller Max Current For Self Powered Operation (Reset = 0x00) 7.1.4.16 Register 0Fh: Hub Controller Max Current For Bus Powered Operation (Reset = 0x00) 7.1.4.17 Register 10h: Power-On Time (Reset = 0x00) 7.1.4.18 Register 11h: Language ID High (Reset = 0x00) 7.1.4.19 Register 12h: Language ID Low (Reset = 0x00) BIT NUMBER BIT NAME DESCRIPTION 7:0 MAX_PWR_BP Max Power Bus_Powered: Value in 2mA increments that the Hub consumes from an upstream port (VBUS) when operating as a bus-powered hub. This value includes the hub silicon along with the combined power consumption (from VBUS) of all associated circuitry on the board. This value also includes the power consumption of a permanently attached peripheral if the hub is configured as a compound device, and the embedded peripheral reports 0mA in its descriptors. BIT NUMBER BIT NAME DESCRIPTION 7:0 HC_MAX_C_SP Hub Controller Max Current Self-Powered: Value in 2mA increments that the Hub consumes from an upstream port (VBUS) when operating as a self- powered hub. This value includes the hub silicon along with the combined power consumption (from VBUS) of all associated circuitry on the board. This value does NOT include the power consumption of a permanently attached peripheral if the hub is configured as a compound device. Note: The USB 2.0 Specification does not permit this value to exceed 100mA BIT NUMBER BIT NAME DESCRIPTION 7:0 HC_MAX_C_BP Hub Controller Max Current Bus-Powered: Value in 2mA increments that the Hub consumes from an upstream port (VBUS) when operating as a bus- powered hub. This value will include the hub silicon along with the combined power consumption (from VBUS) of all associated circuitry on the board. This value will NOT include the power consumption of a permanently attached peripheral if the hub is configured as a compound device. BIT NUMBER BIT NAME DESCRIPTION 7:0 POWER_ON_TIME Power On Time: The length of time that is takes (in 2 ms intervals) from the time the host initiated power-on sequence begins on a port until power is good on that port. System software uses this value to determine how long to wait before accessing a powered-on port. BIT NUMBER BIT NAME DESCRIPTION 7:0 LANG_ID_H USB LANGUAGE ID (Upper 8 bits of a 16 bit ID field) BIT NUMBER BIT NAME DESCRIPTION 7:0 LANG_ID_L USB LANGUAGE ID (lower 8 bits of a 16 bit ID field) |
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