REV. 1.1.0 2.1.1.1 I2C-bus Addressing" />
    • <small id="02dma"></small>
      參數(shù)資料
      型號: XR20M1170IL24-F
      廠商: Exar Corporation
      文件頁數(shù): 55/56頁
      文件大?。?/td> 0K
      描述: IC UART FIFO I2C/SPI 64B 24QFN
      標準包裝: 490
      特點: *
      通道數(shù): 1,UART
      FIFO's: 64 字節(jié)
      規(guī)程: RS485
      電源電壓: 2.25 V ~ 3.6 V
      帶自動流量控制功能:
      帶IrDA 編碼器/解碼器:
      帶故障啟動位檢測功能:
      帶調制解調器控制功能:
      帶CMOS:
      安裝類型: 表面貼裝
      封裝/外殼: 24-VFQFN 裸露焊盤
      供應商設備封裝: 24-QFN 裸露焊盤(4x4)
      包裝: 托盤
      其它名稱: 1016-1476
      XR20M1170IL24-F-ND
      XR20M1170
      8
      I2C/SPI UART WITH 64-BYTE FIFO
      REV. 1.1.0
      2.1.1.1
      I2C-bus Addressing
      There could be many devices on the I2C-bus. To distinguish itself from the other devices on the I2C-bus, there
      are eight possible slave addresses that can be selected for the M1170 using the A1 and A0 address lines.
      Table 1 below shows the different addresses that can be selected. Note that there are two different ways to
      select each I2C address.
      TABLE 1: XR20M1170 I C ADDRESS MAP
      C ADDRESS
      VCC
      0x60 (0110 000X)
      VCC
      GND
      0x62 (0110 001X)
      VCC
      SCL
      0x64 (0110 010X)
      VCC
      SDA
      0x66 (0110 011X)
      GND
      VCC
      0x68 (0110 100X)
      GND
      0x6A (0110 101X)
      GND
      SCL
      0x6C (0110 110X)
      GND
      SDA
      0x6E (0110 111X)
      SCL
      VCC
      0x60 (0110 000X)
      SCL
      GND
      0x62 (0110 001X)
      SCL
      0x64 (0110 010X)
      SCL
      SDA
      0x66 (0110 011X)
      SDA
      VCC
      0x68 (0110 100X)
      SDA
      GND
      0x6A (0110 101X)
      SDA
      SCL
      0x6C (0110 110X)
      SDA
      0x6E (0110 111X)
      An I2C sub-address is sent by the I2C master following the slave address. The sub-address contains the
      UART register address being accessed. A read or write transaction is determined by bit-0 of the slave
      address. If bit-0 is’0’, then it is a write transaction. If bit-0 is ’1’, then it is a read transaction. If bit-0 is a logic
      1, then it is a read transaction. Table 2 below lists the functions of the bits in the I2C sub-address.
      TABLE 2: I C SUB-ADDRESS (REGISTER ADDRESS)
      BIT
      FUNCTION
      7
      Reserved
      6:3
      UART Internal Register Address A3:A0
      2:1
      UART Channel Select
      ’00’ = UART Channel A, other values are reserved
      0
      Reserved
      After the last read or write transaction, the I2C-bus master will set the SCL signal back to its idle state (HIGH).
      2
      A1
      A0
      I2
      2
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      XR20M1170L16-0B-EB 功能描述:UART 接口集成電路 Supports M1170 16pin QFN, SPI Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel