ISP1760
General Description
The ISP1760 is a Hi-Speed Universal Serial Bus (USB) host controller with a generic processor interface. It integrates one Enhanced Host Controller Interface (EHCI), one Transaction Translator (TT) and three transceivers. The host controller portion of the ISP1760 and the three transceivers comply to Universal Serial Bus Specification Rev. 2.0. The EHCI portion of the ISP1760 is adapted from Enhanced Host Controller Interface Specification for Universal Serial Bus Rev. 1.0.
The integrated high-performance Hi-Speed USB transceivers enable the ISP1760 to handle all Hi-Speed USB transfer speed modes: high-speed (480 Mbit/s), full-speed (12 Mbit/s) and low-speed (1.5 Mbit/s). The three downstream ports allow simultaneous connection of three devices at different speeds (high-speed, full-speed and low-speed).
The generic processor interface allows the ISP1760 to be connected to various processors as a memory-mapped resource. The ISP1760 is a slave host: it does not require 'bus-mastering' capabilities of the host system bus. The interface can be configured, ensuring compatibility with a variety of processors. Data transfer can be performed on 16 bits or 32 bits, using Programmed Input/Output (PIO) or Direct Memory Access (DMA) with major control signals configurable as active LOW or active HIGH.
Integration of the TT allows connection to full-speed and low-speed devices, without the need of integrating Open Host Controller Interface (OHCI) or Universal Host Controller Interface (UHCI). Instead of dealing with two sets of software drivers, EHCI and OHCI or UHCI, you need to deal with only one set, EHCI, that dramatically reduces software complexity and IC cost.
Key Features
- The host controller portion of the ISP1760 complies with Universal Serial Bus Specification Rev. 2.0
- The EHCI portion of the ISP1760 is adapted from Enhanced Host Controller Interface Specification for Universal Serial Bus Rev. 1.0
- Contains three integrated Hi-Speed USB transceivers that support high-speed, full-speed and low-speed modes
- Integrates a TT for Original USB (full-speed and low-speed) device support
- Up to 64 kB internal memory (8 k x 64 bits) accessible through a generic processor interface; operation in multitasking environments is made possible by the implementation of virtual segmentation mechanism with bank switching on task request
- Generic processor interface, non-multiplexed and variable latency, with a configurable 32-bit or 16-bit external data bus; the processor interface can be defined as variable-latency or SRAM type (memory mapping)
- Slave DMA support to reduce the load of the host system CPU during the data transfer to or from the memory
- Integrated Phase-Locked Loop (PLL) with a 12 MHz crystal or an external clock input
- Integrated multi-configuration FIFO
- Optimized 'msec-based' or 'multi-msec-based' Proprietary Transfer Descriptor (PTD) interrupt
- Tolerant I/O for low voltage CPU interface (1.65 V to 3.6 V)
- 3.3 V-to-5.0 V external power supply input
- Integrated 5.0 V-to-1.8 V or 3.3 V-to-1.8 V voltage regulator (internal 1.8 V for low-power core)
- Internal power-on reset and low-voltage reset
- Supports suspend and remote wake-up
- Target current consumption:
- Normal operation; one port in high-speed active: ICC < 100 mA
- Suspend mode: ICC(susp) < 150 µA at room temperature
- Built-in configurable overcurrent circuitry (digital or analog overcurrent protection)
- Available in LQFP128 and TFBGA128 packages
Connection Diagram
Applications
The ISP1760 can be used to implement a Hi-Speed USB compliant host controller connected to most of the CPUs present in the market today, having a generic processor interface with de-multiplexed address and data bus. This is because of the efficient slave-type interface of the ISP1760.
The internal architecture of the ISP1760 is such that it can be used in a large spectrum of applications requiring a high-performance internal host controller.
Examples of a multitude of possible applications
- Set-top box: for connecting external high-performance mass storage devices
- Mobile phone: for connecting various USB devices
- Personal digital assistant (PDA): for connecting a large variety of USB devices
- Printer: for connecting external memory card readers, allowing direct printing
- Digital still camera (DSC): for printing to an external USB printer, for direct printing
- Mass storage: for connecting external memory card readers or other mass storage devices, for direct back-up.
The low power consumption and deep power management modes of the ISP1760 make it particularly suitable for use in portable devices.
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CONTACT
- For USB technical support and errata sheets (if any), contact wired.support@stericsson.com
Supporting Documents
| Type: | Description: | File Size: | Download: |
| Selection Guide | USB Controllers Selection Guide | 225KB | download |
| User Manual | ISP1760, ISP1761 Hi-Speed USB Host/OTG Demo Board for PXA255 | 795KB | download |
| Flyer | Complete USB software from the leader in USB for mobile | 364KB | download |
| Brochure | ISP1760, ISP1761, ISP1763 Hi-Speed USB host and OTG controllers | 306KB | download |
| Brochure | USB evaluation kits and reference tools | 2606KB | download |
| Datasheet | Hi-Speed USB host controller for embedded applications | 3890KB | download |
| Application Note | Embedded systems design with the ISP1760; ISP1761 | 250KB | download |
| Application Note | Interfacing ISP1760; ISP1761 to the Intel PXA25x processor | 376KB | download |
| Application Note | ISP1760; ISP1761 Linux programming guide | 745KB | download |
| Application Note | ISP1760/1 frequently asked questions | 370KB | download |
| Application Note | ISP176x Windows CE 5.0 software programming reference | 4770KB | download |
| Application Note | Suspend and wake-up for the ISP1760 host controller | 277KB | download |
| Application Note | USB throughput optimization | 185KB | download |
| Application Note | Interfacing ISP1760; ISP1761 to the PXA300 processor series | 147KB | download |
| User Manual | Installing ISP176x HCD on Linux 2.6.20 | 218KB | download |
