73D2248A – (73D2248A / 73D2348A) MNP5 / V.42bis Datacom Modem Device Set

Part Number : 73D2248A

Function : (73D2248A / 73D2348A) MNP5 / V.42bis Datacom Modem Device Set

Manufactures : TDK Electronics

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Description :

73D2248A/2348A MNP5, V.42bis Datacom Modem Device Set April 2000 DESCRIPTION The 73D2248A/2348A Device Sets consists of two CMOS integrated circuits which provide the data pump and protocol functions required to implement a high performance 2400 bit/s modem with error control and data compression. The 73D2248A basic modem function is provided by the 73K224L modem chip and is compatible with CCITT V.21, V.22, V.22bis and Bell 103 and 212A protocols. The error control functions are provided by modular software running in the 73M2910 controller. Modules are available for MNP4, and V.42. Compression software modules can be added to the controller; MNP5 and V.42bis are available. Provisions for customization of the command set are provided, forming the basis for an international modem. The 73D2348 differs from the 73D2248A in that it uses the 73K324L instead of the 73K224L for the data pump. The 73K324L replaces the Bell 103, 300 bps (bit/s) FSK mode of operation, with the CCITT V.23, 1200 bps (bit/s) FSK mode. The software is also modified to support V.23. The two products are otherwise identical. FEATURES Combines modem and protocol controller Supports 0 – 300, 1200 and 2400 bit/s with both sync and async modes Modular software design allows customization Modem protocols: Bell 103 (73K224L), 212A CCITT V.21, V.22, V.22bis, V.23 (73K324L) Error control/compression protocols Available: MNP4, MNP5, CCITT V.42, V.42bis Supports non-volatile memory to store user configurations and phone numbers CMOS design for low power consumption MNP5, V.42bis Datacom Modem Device Set 73M2910L Controller 8 73K224L/324L Modem HYBRID/ DAA TSC 73D2248 16 16 STATIC RAM 32K x 8 ROM 64K x 8 NV RAM 93C66 RECOMMENDED SUPPORT 73D2248A/2348A MNP5, V.42bis Datacom Modem Device Set FUNCTIONAL DESCRIPTION The 73D2248A/2348A device set forms the basis for an international modem design incorporating the most advanced error control and compression algorithms. The set consists of two chips, the 73K224L (73K324L) modem and the 73M2910 controller. Customization of the controller is one of the features of this device set; software modules allow the modem vendor to provide a range of features from a standard hardware platform. The 73K224L (73K324L) provides the QAM, PSK and FSK modulator and demodulator functions, call progress and handshake tone monitors, test modes and a tone generator capable of producing DTMF, answer and CCITT guardtones. This single-chip modem supports the V.22bis, V.22, V.21 and Bell 103/CCITT V.23/212A operating protocols in both sync and async modes. Low level functions of the controller provide for automatic detection of DTE speed, auto-dial, auto-answer, handshake with fallback and call progress detection. The 73M2910 controller handles both the low level modem functions as well as protocol negotiation and protocol operation. Software modules can be chosen to provide the desired protocols for product customization […]

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73D2248A Datasheet


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