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XR22802 Datasheet Preview

XR22802 Datasheet

Hi-Speed USB to 10/100 Ethernet Bridge

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XR22802
Hi-Speed USB to 10/100 Ethernet Bridge with 2 UARTs
General Description
The XR22802 is a Hi-Speed USB 2.0 compound device with an embed-
ded hub and 5 downstream USB functions: 10/100 Ethernet MAC and
PHY, 2 UARTs, multi-master capable I2C controller, and an Enhanced
Dedicated GPIO Entity (EDGE) controller.
The upstream USB interface has an integrated USB 2.0 PHY and device
controller that is compliant with both Hi-Speed (480Mbps) and Full-Speed
(12Mbps) USB 2.0. The vendor ID, product ID, power mode, remote
wakeup support and maximum power consumption are amongst the val-
ues that can be programmed using the on-chip One-Time Programmable
(OTP) memory.
The 10/100 Ethernet MAC and PHY is compliant with IEEE 802.3 and
supports auto-negotiation, auto-MDIX, checksum offload, auto-polarity
correction in 10Base-T and remote wakeup capabilities.
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
TX FIFO and RX FIFO to optimize the overall data throughput for various
applications. The automatic RS485 control feature simplifies both the
hardware and software for half-duplex RS-485 applications. If required,
the multidrop (9-bit) mode feature further simplifies typical multidrop appli-
cations by enabling / disabling the UART receiver depending on the
address byte received.
The multi-master capable I2C controller and EDGE controller (up to 32
GPIOs) can be accessed via the USB HID interface. The EDGE pins or
I2C interface can be used for controlling and monitoring other peripherals.
Up to 2 EDGE pins can be configured as a PWM generator.
FEATURES
USB 2.0 Compliant Interface
10/100 Ethernet MAC and PHY
Enhanced UART
I2C Multi-master
Enhanced Dedicated GPIO Entity (EDGE)
Single +5.0V Power Supply Input
Regulated +3.3V Output Power
Single 25MHz Crystal
±15kV HBM ESD Protection on USB data
pins
±8kV HBM ESD Protection on all other pins
USB CDC-ACM, CDC-ECM and HID
compliant
Custom Software Drivers
APPLICATIONS
USB to Ethernet Dongles
POS Terminals
Test Instrumentation
Networking
Factory Automation and Process Controls
Industrial Applications
Ordering Information – Back Page
Block Diagram
25 MHz
XO
USB
Upstream
USB Phy
USB
2.0
Hub
OTP
Memory
10/100
Ethernet
MAC
UART Ch A /
MUoAdReTmCIOh B /
Modem IO
Ethernet
Phy
I2C
Multimaster
EDGE
Controller
Ethernet
I2C
UART Ch.
A, B
/ EDGE
1 / 48
maxlinear.com/XR22802
Rev 1D




MaxLinear

XR22802 Datasheet Preview

XR22802 Datasheet

Hi-Speed USB to 10/100 Ethernet Bridge

No Preview Available !

XR22802
Extended Features
• USB 2.0 Compliant Interface
• Integrated USB 2.0 PHY
• Supports 480 Mbps USB Hi-Speed and 12 Mbps USB
Full-Speed data rate
• Supports USB suspend, resume and remote wakeup
operations
• Compatible with USB CDC-ECM and CDC-ACM
• 10/100 Ethernet MAC and PHY
• Compliant with IEEE 802.3
• Integrated 10/100 Ethernet MAC and PHY
• 10BASE-T and 100BASE-TX support
• Full-duplex and half-duplex support
• Full-duplex and half-duplex flow control
• Preamble generation and removal
• Automatic 32-bit CRC generation and checking
• Automatic payload padding and pad removal
• Diagnostic loop-back modes
• TCP/UDP/IP/ICMP checksum offload support
• Flexible Address filtering modes
• Wakeup packet support
• Support for 2 status LEDs
• Enhanced UART features
• Data rates up to 15 Mbps
• Fractional Baud Rate Generator
• 1024 byte TX and RX FIFOs
• 7, 8 or 9 data bits, 1 or 2 stop bits
• Automatic Hardware Flow Control
• Automatic Software Flow Control
• Multidrop (9-bit) mode
• Auto RS-485 Half-Duplex Control
• I2C Multi-master
• Up to 400 kbps transfers
• Multi-master capable
• Enhanced Dedicated GPIO Entity (EDGE)
• Parallel GPIO access
• Two PWM generators
• Custom software drivers
• Windows XP, Vista, 7, 8, 8.1 and 10
• Windows CE 6.0
• Linux
• Mac OS X
2 / 48
maxlinear.com/XR22802
Rev 1D


Part Number XR22802
Description Hi-Speed USB to 10/100 Ethernet Bridge
Maker MaxLinear
Total Page 30 Pages
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