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The PSM2000ACD is one member of the WebChipTM family of products. The module contains a network communication controller PS2000, an RS-232 transceiver, an RS-485 transceiver, an embedded Modem controller and a standard Modem interface. The PSM2000ACD provides a convenient interface for users to develop applications for various networking intelligent devices. It uses a standard Serial Peripheral Interface (SPI) communication port to connect to the user's MCU and conforms to the MCUnetTM protocol. The PSM2000ACD connects to a server gateway WebChipServerTM through any of the following: RS-232, RS-485, embedded Modem or standard Modem.
PSM2000ACD Features
• A single +5V power supply • Each module has a unique ID number • Supports multiple communication modes -RS-232 mode: the module has a built-in interface, a MAX232 (from MAXIM), which performs the conversion between TTL/CMOS signals and RS-232 format. -RS-485 mode: the module has a built-in interface that features transient voltage suppression and thermal shutdown; at most, 64 transceivers can be connected to the bus. -Embedded Modem mode: the module has a built-in embedded Modem and DTMF generation circuit that support both the standard V.22bis protocol and V.22 protocol. -Standard Modem mode: it provides an interface connection to a standard Modem. • Provides a standard SPI port that can be connected to various MCUs • Easy to design networking MCU application system • Supports any gateway software with MCUapTM protocol • Maximum operating current: 100mA in embedded Modem mode