XR20M1170
XR20M1170 is I2C/SPI UART manufactured by MaxLinear.
DESCRIPTION
The XR20M11701 is a high performance universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs and a selectable I2C/SPI slave interface. The XR20M1170 operates from 1.62 to 3.63 volts. The enhanced features in the XR20M1170 include a programmable fractional baud rate generator, an 8X and 4X sampling rate that allows for a maximum baud rate of 16Mbps at 3.3V. The standard features include 16 selectable TX and RX FIFO trigger levels, automatic hardware (RTS/ CTS) and software (Xon/Xoff) flow control, and a plete modem interface. Onboard registers provide the user with operational status and data error flags. An internal loopback capability allows system diagnostics. The XR20M1170 is available in the 24-pin QFN, 16-pin QFN, 24-pin TSSOP and 16pin TSSOP packages.
NOTE: 1 Covered by U.S. Patent #5,649,122
APPLICATIONS
- Portable appliances
- Battery-operated devices
- Cellular data devices
- Factory automation and process controls
FEATURES
- 1.62 to 3.6 Volt operation
- Selectable I2C/SPI interface
- SPI clock frequency up to
- 18MHz at 3.3V
- 16MHz at 2.5V
- 8MHz at 1.8V
- Full-featured UART
- Data rate of up to 16Mbps at 3.3V
- Data rate of up to 12.5Mbps at 2.5V
- Data rate of up to 8Mbps at 1.8V
- Fractional baud rate generator
- Transmit and receive FIFOs of 64 bytes
- 16 selectable TX and RX FIFO trigger levels
- Automatic hardware (RTS/CTS) flow control
- Automatic software (Xon/Xoff) flow control
- Halt and resume transmission control
- Automatic RS-485 half-duplex direction control output via RTS#
- Wireless Infrared (Ir DA 1.0 and 1.1) encoder/ decoder
- Automatic sleep mode (< 15u A at 3.3V)
- 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
IR Q #
SDA SCL A 0/C S # A1/SI
SO I2C/SPI#
1.62V
-...
