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  2. USB communications - Wikipedia

    en.wikipedia.org/wiki/USB_communications

    The idle line state is when the device is connected to the host with a pull-up on either D+ (for full speed USB 1.x) or D− (for low speed USB 1.x), with transmitter output on both host and device is set to high impedance (hi-Z) (disconnected output). A USB device pulls one of the data lines high with a 1.5 kΩ resistor.

  3. InterChip USB - Wikipedia

    en.wikipedia.org/wiki/InterChip_USB

    High-Speed Inter-Chip (HSIC) is a chip-to-chip variant of USB 2.0 that eliminates the conventional analog transceivers found in normal USB. It was adopted as a standard by the USB-IF in 2007. The HSIC physical layer uses about 50% less power and 75% less board area compared to traditional USB 2.0. HSIC uses two signals at 1.2 V and has a ...

  4. USB - Wikipedia

    en.wikipedia.org/wiki/USB

    The Hi-Speed USB logo. USB 2.0 was released in April 2000, adding a higher maximum signaling rate of 480 Mbit/s (maximum theoretical data throughput 53 MByte/s [25]) named High Speed or High Bandwidth, in addition to the USB 1.x Full Speed signaling rate of 12 Mbit/s (maximum theoretical data throughput 1.2 MByte/s). [26]

  5. Extensible Host Controller Interface - Wikipedia

    en.wikipedia.org/wiki/Extensible_Host_Controller...

    For example, a USB 2 PCIe host controller card that presents 4 USB "Standard A" connectors typically presents one 4-port EHCI and two 2-port OHCI controllers to system software. When a high-speed USB device is attached to any of the 4 connectors, the device is managed through one of the 4 root hub ports of the EHCI controller.

  6. JMicron - Wikipedia

    en.wikipedia.org/wiki/JMicron

    Also included in the showcase is the JMB38x series, a PCIe to card reader & 1394 controller chip, the JMB211, a Gigabit Ethernet PHY controller chip, the JMB352, a high-speed USB & eSATA to 2-port SATA II external HDD controller chip, and the JMB325, a 1- to 5-port SATA II port multiplier with hardware RAID. [5] In 2009, the JMF612 was released.

  7. Host controller interface (USB, Firewire) - Wikipedia

    en.wikipedia.org/wiki/Host_controller_interface...

    Open Host Controller Interface (OHCI) [1] is an open standard.. Die shot of a VIA VT6307 Integrated Host Controller used for IEEE 1394A communication. When applied to an IEEE 1394 (also known as FireWire; i.LINK or Lynx) card, OHCI means that the card supports a standard interface to the PC and can be used by the OHCI IEEE 1394 drivers that come with all modern operating systems.

  8. List of interface bit rates - Wikipedia

    en.wikipedia.org/wiki/List_of_interface_bit_rates

    The physical phenomena on which the device relies (such as spinning platters in a hard drive) will also impose limits; for instance, no spinning platter shipping in 2009 saturates SATA revision 2.0 (3 Gbit/s), so moving from this 3 Gbit/s interface to USB 3.0 at 4.8 Gbit/s for one spinning drive will result in no increase in realized transfer rate.

  9. NXP LPC - Wikipedia

    en.wikipedia.org/wiki/NXP_LPC

    Each chip has a factory-programmed 128-bit unique device identifier number. Peripherals: four UART, two I²C, one SPI, two CAN, none / one / two high-speed USB 2.0 Host/Device controller (one is OTG capable), none or one Ethernet controller, none or one LCD controller, interface for SDRAM, and more.