产品特点 Features

• Automotive qualified in accordance with AEC-Q100
• Compliant with Universal Serial Bus Specification Rev. 2.0; supporting data transfer at high-speed (480 Mbit/s), full-speed (12 Mbit/s) and low-speed (1.5 Mbit/s)
• Integrated Transaction Translator (TT) for original USB (full-speed and low-speed) peripheral support
• Three USB ports that support three operational modes:
  • Mode 1: Port 1 is an OTG controller port, and ports 2 and 3 are host controller ports
  • Mode 2: Ports 1, 2 and 3 are host controller ports
  • Mode 3: Port 1 is a peripheral controller port, and ports 2 and 3 are host controller ports
• Supports OTG Host Negotiation Protocol (HNP) and Session Request Protocol (SRP)
• Multitasking support with virtual segmentation feature (up to four banks)
• High-speed memory controller (variable latency and SRAM external interface)
• Directly addressable memory architecture
• Generic processor interface to most CPUs, such as Hitachi SH-3 and SH-4, NXP XA, Intel StrongARM, NEC and Toshiba MIPS, Freescale DragonBall and PowerPC Reduced Instruction Set Computer (RISC) processors
• Configurable 32-bit and 16-bit external memory data bus
• Supports Programmed I/O (PIO) and Direct Memory Access (DMA)
• Slave DMA implementation on CPU interface to reduce the host systems CPU load
• Separate IRQ, DREQ and DACK lines for the host controller and the peripheral controller
• Integrated multi-configuration FIFO
• Double-buffering scheme increases throughput and facilitates real-time data transfer
• Integrated Phase-Locked Loop (PLL) with external 12 MHz crystal for low ElectroMagnetic Interference (EMI)
• Tolerant I/O for low voltage CPU interface (1.65 V to 3.3 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 or low-voltage reset and block-dedicated software reset
• Supports suspend and remote wake-up
• Built-in overcurrent circuitry (analog overcurrent protection)
• Hybrid-power mode: VCC (5V0) (can be switched off), VCC (I/O) (permanent)
• Target total current consumption:
  • Normal operation; one port in high-speed active: ICC< 100 mA when the internal charge pump is not used
  • Suspend mode: ICC(susp)< 150 μA at ambient temperature of +25 °C
• Host controller-specific features
  • High performance USB host with integrated Hi-Speed USB transceivers; supports high-speed, full-speed and low-speed
  • EHCI core is adapted from Enhanced Host Controller Interface Specification for Universal Serial Bus Rev. 1.0
  • Configurable power management
  • Integrated TT for Original USB peripheral support on all three ports
  • Integrated 64 kB high-speed memory (internally organized as 8 k 64 bit)
  • Additional 2.5 kB separate memory for TT
  • Individual or global overcurrent protection with built-in sense circuits
  • Built-in overcurrent circuitry (digital or analog overcurrent protection)
• OTG controller-specific features
  • OTG transceiver: fully integrated; adheres to On-The-Go Supplement to the USB Specification Rev. 1.3
  • Supports HNP and SRP for OTG dual-role devices
  • HNP: status and control registers for software implementation
  • SRP: status and control registers for software implementation
  • Programmable timers with high resolution (0.01 ms to 80 ms) for HNP and SRP
  • Supports external source of VBUS
• Peripheral controller-specific features
  • High-performance USB peripheral controller with integrated Serial Interface Engine (SIE), FIFO memory and transceiver
  • Complies with Universal Serial Bus Specification Rev. 2.0 and most device class specifications
  • Supports auto Hi-Speed USB mode discovery and Original USB fallback capabilities
  • Supports high-speed and full-speed on the peripheral controller
  • Bus-powered or self-powered capability with suspend mode
  • Slave DMA, fully autonomous and supports multiple configurations
  • Seven IN endpoints, seven OUT endpoints and one fixed control IN and OUT endpoint
  • Integrated 8 kB memory
  • Software-controllable connection to the USB bus, SoftConnect

应用

The SAF1761 can be used to implement a dual-role USB device, USB host or USB peripheral, depending on the cable connection. If the dual-role device is connected to a typical USB peripheral, it behaves like a typical USB host. The dual-role device can also be connected to a PC or any other USB host and behave like a typical USB peripheral.

This NXP USB product can only be used in automotive applications. Inclusion or use of the NXP USB products in other than automotive applications is not permitted and for your company’s own risk. Your company agrees to full indemnify NXP for any damages resulting from such inclusion or use