The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for
SMBus and I2C-bus applications. The PCA9557 consists of an 8-bit input Port register,
8-bit output Port register, and an I2C-bus/SMBus interface. It has low current consumption
and a high-impedance open-drain output pin, IO0.
The system master can enable the PCA9557’s I/O as either input or output by writing to
the configuration register. The system master can also invert the PCA9557 inputs by
writing to the active HIGH polarity inversion register. Finally, the system master can reset
the PCA9557 in the event of a time-out by asserting a LOW in the reset input.
The power-on reset puts the registers in their default state and initializes the
I2C-bus/SMBus state machine. The RESET pin causes the same reset/initialization to
occur without de-powering the part.
The CAT9555 is a CMOS device that provides 16-bitparallel input/output Port expansion for I²C and SMBuscompatible applications. These I/O expanders providea simple solution in applications where additional I/Osare needed: sensors, power switches, LEDs,pushbuttons, and fans.
The CAT9534 is an 8-bit parallel input/output Portexpander for I²C and SMBus compatible applications.These I/O expanders provide a simple solution inapplications where additional I/Os are needed: sensors,power switches, LEDs, pushbuttons, and fans.The CAT9534 consists of an input Port register, anoutput Port register, a configuration register, a polarityinversion register and an I²C/SMBus-compatible serialinterface.
項目描述: slsnif is a serial Port logging utility. It listens to the specified serial Port and logs all data going through this Port in both directions. Serial line sniffer是一個串行端口記錄工具。它監(jiān)聽指定的串行端口并記錄所有通過這個端口的兩個方向的數(shù)據(jù)。 來源:http://freshmeat.net slsnif是一個串行端口日志工具。它監(jiān)聽特殊的串口,記錄所有通過這具串口的兩個方向的數(shù)據(jù)。 類別: Development Status: 5 - Production/StableEnvironment: Console (Text Based)Intended Audience: DevelopersLicense: GNU General Public License (GPL)Operating System: LinuxProgramming Language: CTopic: Communications, Debuggers
項目描述: slsnif is a serial Port logging utility. It listens to the specified serial Port and logs all data going through this Port in both directions. Serial line sniffer是一個串行端口記錄工具。它監(jiān)聽指定的串行端口并記錄所有通過這個端口的兩個方向的數(shù)據(jù)。 來源:http://freshmeat.net slsnif是一個串行端口日志工具。它監(jiān)聽特殊的串口,記錄所有通過這具串口的兩個方向的數(shù)據(jù)。 類別: Development Status: 5 - Production/StableEnvironment: Console (Text Based)Intended Audience: DevelopersLicense: GNU General Public License (GPL)Operating System: LinuxProgramming Language: CTopic: Communications, Debuggers