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IMSC011 Datasheet(PDF) 3 Page - STMicroelectronics |
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IMSC011 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 30 page /30 3 1 Introduction The INMOS communication link is a high speed system interconnect which provides full duplex communi- cation between members of the transputer family, according to the INMOS serial link protocol. The IMS C011, a member of this family, provides for full duplex transputer link communication with standard microprocessor and sub-system architectures, by converting bi-directional serial link data into parallel data streams. All transputer products which use communication links, regardless of device type, support a standard com- munications frequency of 10 Mbits/sec; most products also support 20 Mbits/sec. Products of different type or performance can, therefore, be interconnected directly and future systems will be able to communi- cate directly with those of today. The IMS C011 link will run at either the standard speed of 10 Mbits/sec or at the higher speed of 20 Mbits/sec. Data reception is asynchronous, allowing communication to be in- dependent of clock phase. The link adaptor can be operated in one of two modes. In Mode 1 the IMS C011 converts between a link and two independent fully handshaken byte-wide interfaces, one input and one output. It can be used by a peripheral device to communicate with a transputer, a peripheral processor or another link adaptor, or it can provide programmable input and output pins for a transputer. Two IMS C011 devices in this mode can be connected back to back via the parallel ports and used as a frequency changer between different speed links. In Mode 2 the IMS C011 provides an interface between an INMOS serial link and a microprocessor system bus. Status and data registers for both input and output ports can be accessed across the byte-wide bi-directional interface. Two interrupt outputs are provided, one to indicate input data available and one for output buffer empty. Input Interface Output Interface System Services Link 8 8 Q0–7 Qack QValid I0–7 IAck IValid VDD GND CapMinus ClockIn Reset SeparateIQ LinkOut LinkIn Figure 1.1 IMS C011 Mode 1 block diagram Interrupt Control Data and Status Registers System Services Link 8 D0–7 InputInt OutputInt VDD GND CapMinus ClockIn Reset SeparateIQ LinkOut LinkIn Register Select LinkSpeed RS0 RS1 RnotW notCS Figure 1.2 IMS C011 Mode 2 block diagram |
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Similar Description - IMSC011 |
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