Samsung OFFICESERV 7100 Service Manual

Also see for OFFICESERV 7100: Quick guide System administration guide User guide User manual User guide

Contents

CHAPTER 12. Error! Use the Home tab to apply 제목 1,장 제목 1 to the text that you want to appear here.2-34 © SAMSUNG Electronics Co., Ltd.2.5.10.1 Block DiagramThe block diagram of the 8DLI board is shown in the figure below:Figure 2.20 Block Diagram of the 8DLI Board2.5.10.2 Main FeaturesThe Main Features of the 8DLI board are as follows:QDMC (STI9511)The QDMC(STI9511) is a special ASIC for controlling TP3404, which is the Quad DigitalAdapter for Subscriber Loops(QDASL) chip of National Semiconductor. The TP3404controlled by this chip is an expanded form of the existing TP3401/3402/3403. This chip ismade in the following procedures: The transceiver in a single channel Time CompressionMultiplexed(TCM) transmission method is expanded to 4 ports and micro wired controland other control structures are changed.The functional features of the QDMC are as follows:y Transfers/receives data in a UART format for D channels.y A UART speed(2/4/8/16 kbps) can be selected.y The B channel functions as a by-pass interface.y Inter-works with micro wired serial control(16-bit).Address&ControlLine #1InterfaceLine #2InterfaceLine #3InterfaceLine #4InterfaceQDASL(TP3404)QDMC(STI9511)DATAMBD InterfaceLine #5InterfaceLine #6InterfaceLine #7InterfaceLine #8InterfaceQDASL(TP3404)