XR22801 Hi-Speed USB to 10/100 Ethernet Bridge with 1 UART FEATURES General Description USB 2.0 Compliant Interface The XR22801 is a Hi-Speed USB 2.0 compound device with an embed- 10/100 Ethernet MAC and PHY ded hub and 4 downstream USB functions: 10/100 Ethernet MAC and Enhanced UART 2 PHY, UART, multi-master capable I C controller, and an Enhanced Dedi- 2 I C Multi-master cated GPIO Entity (EDGE) controller. Enhanced Dedicated GPIO Entity (EDGE) The upstream USB interface has an integrated USB 2.0 PHY and device Single +5.0V Power Supply Input controller that is compliant with both Hi-Speed (480Mbps) and Full-Speed Regulated +3.3V Output Power (12Mbps) USB 2.0. The vendor ID, product ID, power mode, remote wakeup support and maximum power consumption are amongst the val- Single 25MHz Crystal ues that can be programmed using the on-chip One-Time Programmable 15kV HBM ESD Protection on USB data (OTP) memory. pins The 10/100 Ethernet MAC and PHY is compliant with IEEE 802.3 and 8kV HBM ESD Protection on all other pins supports auto-negotiation, auto-MDIX, checksum offload, auto-polarity USB CDC-ACM, CDC-ECM and HID correction in 10Base-T and remote wakeup capabilities. compliant Custom Software Drivers The enhanced UART has a maximum data rate of 15 Mbps. Using a frac- tional baud rate generator, any baud rate between 300 bps and 15 Mbps can be accurately generated. In addition, the UART has a large 1024-byte APPLICATIONS TX FIFO and RX FIFO to optimize the overall data throughput for various USB to Ethernet Dongles applications. The automatic RS485 control feature simplifies both the POS Terminals hardware and software for half-duplex RS-485 applications. If required, Test Instrumentation the multi-drop (9-bit) mode feature further simplifies typical multi-drop applications by enabling / disabling the UART receiver depending on the Networking address byte received. Factory Automation and Process Controls 2 The multi-master capable I C controller and EDGE controller (up to 16 Industrial Applications GPIOs) can be accessed via the USB HID interface. The EDGE pins or 2 Ordering Information Back Page I C interface can be used for controlling and monitoring other peripherals. Up to 2 EDGE pins can be configured as a PWM generator. Block Diagram 10/100 Ethernet Ethernet 25 MHz Ethernet Phy XO Controller 2 2 I C I C USB USB Upstream Multimaster 2.0 USB Phy Hub UART / UART / Modem IO EDGE OTP EDGE Memory Controller 1 / 43 maxlinear.com/XR22801 Rev 1DXR22801 Extended Features USB 2.0 Compliant Interface Enhanced UART features Integrated USB 2.0 PHY Data rates up to 15 Mbps Supports 480 Mbps USB Hi-Speed and 12 Mbps USB Fractional Baud Rate Generator Full-Speed data rate 1024 byte TX and RX FIFOs Supports USB suspend, resume and remote wakeup 7, 8 or 9 data bits, 1 or 2 stop bits operations Automatic Hardware Flow Control Compatible with USB CDC-ECM and CDC-ACM Automatic Software Flow Control 10/100 Ethernet MAC and PHY Multi-drop (9-bit) mode Compliant with IEEE 802.3 Auto RS-485 Half-Duplex Control Integrated 10/100 Ethernet MAC and PHY 2 I C Multi-master 10BASE-T and 100BASE-TX support Up to 400 kbps transfers Full-duplex and half-duplex support Multi-master capable Full-duplex and half-duplex flow control Preamble generation and removal Enhanced Dedicated GPIO Entity (EDGE) Automatic 32-bit CRC generation and checking Parallel GPIO access Automatic payload padding and pad removal Two PWM generators Diagnostic loop-back modes Custom software drivers TCP/UDP/IP/ICMP checksum offload support Windows XP, Vista, 7, 8, 8.1 and 10 Flexible Address filtering modes Windows CE 6.0 Wakeup packet support Linux Support for 2 status LEDs Mac OS X 2 / 43 maxlinear.com/XR22801 Rev 1D