XR20M1170L16-0B-EB MaxLinear

XR20M1170 I2C/SPI UART WITH 64-BYTE FIFO JULY 2012 REV. 1.1.0 FEATURES GENERAL DESCRIPTION 1.62 to 3.6 Volt Operation 1 The XR20M1170 (M1170) is a high performance 2 universal asynchronous receiver and transmitter Selectable I C/SPI Interface (UART) with 64 byte TX and RX FIFOs and a SPI clock frequency up to 2 selectable IC/SPI slave interface. The M1170 18 MHz at 3.3 V operates from 1.62 to 3.63 volts. The enhanced features in the M1170 include a programmable 16 MHz at 2.5 V fractional baud rate generator, an 8X and 4X 8 MHz at 1.8 V sampling rate that allows for a maximum baud rate of Full-featured UART 16 Mbps at 3.3V. The standard features include 16 selectable TX and RX FIFO trigger levels, automatic Data rate of up to 16 Mbps at 3.3 V hardware (RTS/CTS) and software (Xon/Xoff) flow Data rate of up to 12.5 Mbps at 2.5 V control, and a complete modem interface. Onboard Data rate of up to 8 Mbps at 1.8 V registers provide the user with operational status and Fractional Baud Rate Generator data error flags. An internal loopback capability allows system diagnostics. The M1170 is available in Transmit and Receive FIFOs of 64 bytes the 24-pin QFN, 16-pin QFN, 24-pin TSSOP and 16- 16 Selectable TX and RX FIFO Trigger Levels pin TSSOP packages. Automatic Hardware (RTS/CTS) Flow Control NOTE: 1 Covered by U.S. Patent 5,649,122 Automatic Software (Xon/Xoff) Flow Control APPLICATIONS Halt and Resume Transmission Control Automatic RS-485 Half-duplex Direction Portable Appliances Control Output via RTS Battery-Operated Devices Wireless Infrared (IrDA 1.0 and 1.1) Encoder/ Cellular Data Devices Decoder Automatic sleep mode (< 15 uA at 3.3V) Factory Automation and Process Controls General Purpose I/Os Full modem interface Crystal oscillator (up to 24MHz) or external clock (up to 64MHz) input 24-QFN, 16-QFN, 24-TSSOP, 16-TSSOP packages FIGURE 1. XR20M1170 BLOCK DIAGRAM VCC 1.62V 3.63V 64 Byte TX TX FIFO 64 Byte IRQ RX RX FIFO UART Regs RTS CTS SDA GPIOs SCL 2 GPIO 7:0 I C/SPI A0/CS Interface BRG A1/SI SO XTAL1 Crystal Osc/Buffer XTAL2 I2C/SPI Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com XR20M1170 I2C/SPI UART WITH 64-BYTE FIFO REV. 1.1.0 FIGURE 2. PIN OUT ASSIGNMENT VCC 1 24 GPIO7/RI GPIO6/CD A0/CS 2 23 A1/SI 3 22 CTS 18 17 16 15 14 13 RESET SO 4 21 CTS SDA 19 12 GPIO0 5 20 GPIO4/DSR GPIO6/CD GND 20 11 24-Pin GPIO1 6 19 GPIO5/DTR GPIO7/RI 21 10 GPIO3 TSSOP 24-Pin QFN I2C/SPI 7 18 RTS VCC 22 9 XTAL2 RX 17 IRQ 8 A0/CS 23 8 XTAL1 A1/SI 24 7 GPIO2 TX 16 SCL 9 123 456 10 15 SDA GPIO2 XTAL1 11 14 GND 12 13 GPIO3 XTAL2 A0/CS 1 16 VCC A1/SI 2 15 CTS 12 11 10 9 SO 3 14 RESET CTS 13 8 SDA I2C/SPI 4 13 RTS 16-Pin 16-Pin 14 7 VCC GND TSSOP QFN RX 5 12 IRQ A0/CS 15 6 XTAL2 6 TX 11 SCL 16 5 A1/SI XTAL1 XTAL1 7 10 SDA 12 34 XTAL2 8 9 GND ORDERING INFORMATION PART NUMBER PACKAGE OPERATING TEMPERATURE RANGE DEVICE STATUS XR20M1170IL24-F 24-pin QFN -40C to +85C Active XR20M1170IL24TR-F 24-pin QFN -40C to +85C Active XR20M1170IL16-F 16-pin QFN -40C to +85C Active XR20M1170IL16TR-F 16-pin QFN -40C to +85C Active XR20M1170IG24-F 24-Lead TSSOP -40C to +85C Active XR20M1170IG24TR-F 24-Lead TSSOP -40C to +85C Active XR20M1170IG16-F 16-Lead TSSOP -40C to +85C Active XR20M1170IG16TR-F 16-Lead TSSOP -40C to +85C Active NOTE: TR = Tape and Reel, F = Green / RoHS 2 RESET SO GPIO4/DSR RESET SO GPIO0 RTS I2C/SPI GPIO5/DTR GPIO1 IRQ RX RTS I2C/SPI SCL TX IRQ RX SCL TX