谁能帮忙翻译一段外文文献啊?跪求真正的英语大神啊~~~!跟单片机通信有关的

谁能帮忙翻译一段外文文献啊?跪求真正的英语大神啊~~~!跟单片机通信有关的
The flight
The PIC24FJ128GA010 offers seven communication peripherals that are designed to assist in all common embedded-control applications. As many as six of them are "serial" communication peripherals, as they transmit and receive a single bit of information at a time; they are:
2 × the universal asynchronous receiver and transmitters(UARTs)
2 × the SPI synchronous serial interfaces
2 × the I2CTM synchronous serial interfaces
The main difference between a synchronous interface (like the SPI or I2C) and an asynchronous one (like the UART) is in the way the timing information is passed from transmitter to receiver. Synchronous communication peripherals need a physical line (a wire) to be dedicated to the clock signal, providing synchronization between the two devices. The device(s) that originates the clock signal is typically referred to as the Master and the devices(s) that synchronizes with it is called the Slave(s).
Synchronous serial interfaces
The I2C interface, for example, uses two wires (and therefore two pins of the micro-controller), one for the clock (referred to as SCL) and one (bidirectional) for the data (SDA).
The SPI interface instead separates the data line in two, one for the input (SDI) and one for the output (SDO), requiring one extra wire but allowing simultaneous (faster) data transfer in both directions.
In order to connect multiple devices to the same serial communication interfaces (bus configuration), the I2C interface requires a 10-bit address to be sent over the data line before any actual is transferred. This slows down the communication but allows the same two wires (SCL and SDA) to be used for as many as (theoretically) 1,000 devices. Also, the I2C interface allows for multiple devices to act as masters and share the bus using a simple arbitration protocol.
The SPI interface, on the other side. Requires an additional physical line, the slave select (SS) to be connected to each device. In practice, this means that, using an SPI bus, as the number of devices connected grows, the number of I/O pins required on the PIC24 grows proportionally with them.
Sharing an SPI bus among multiple masters is theoretically possible but practically very rare. The main advantages of the SPI interface are truly its simplicity and the speed that can be one order of magnitude higher than that of the faster I2C bus (even without taking into consideration the details of the protocol-specific overhead).
Asynchronous serial interfaces
In asynchronous communication interfaces, there is no clock line, while typically two data lines are used: TX and RX, respectively, for input and output (optionally two more lines may be used to provide hardware handshake). The synchronization between transmitter and receiver is obtained by extracting timing information from the data stream itself. Start and stop bits are added to the data and precise formatting (with a fixed baud rate) allow reliable data transfer.