Z80382/Z8L382 Data Communiacations Processor User Manual
●GENERAL DESCRIPTION
■The Z80382 (Z382) is designed to address high-end data communication applications such as digital modems (ISDN, GSM, Mobitex & Modacom), xDSL and analog modems (V.34 and beyond). The Z80382 provides a performance upgrade to existing Z80- and Z18x-based designs by utilizing the increased bandwidth of the 380C processor.
■The 380C microprocessor is a high-performance processor with fast and efficient throughput and increased memory addressing capabilities. The 380C offers a continuing growth path for present Z80- or Z18x-based designs, while maintaining Z80 and Z180 object code compatibility. Its enhancements include added instructions, expanded sixteen megabyte address space and flexible bus interface timing.
■In the 380C, the basic addressing modes of the Z80 microprocessor have been augmented to include Stack Pointer Relative loads and stores,16-bit and 24-bit indexed offsets, and more flexible Indirect Register addressing. Internally, all of the addressing modes allow up to 32-bit linear addressing. However, because the Z382 has only 24 address pins, it can only address 16 MB of memory.
■Other additions to the instruction set include:
▲A full complement of 16-bit arithmetic and logical operations
▲16-bit I/O operations, multiply and divide
▲A complete set of register-to-register loads and exchanges
■The 380C register file includes alternate versions of the lX and lY registers. There are four banks of registers in the 380C, along with
instructions for switching among them. All of the 16-bit register pairs and index registers in the basic Z80 microprocessor register file are expanded to 32 bits.
■The Z80382 includes dynamic bus sizing to allow any mix of 16-and 8-bit memory, and l/O devices in a system. One application for this capability would be to copy code from a low-cost, slow 8-bit ROM to 16-bit RAM, from which the code can be executed at much higher speeds. Memory buses can be configured internally by software to eliminate the necessity for external logic to drive MSIZE.
■Some features that have traditionally been handled by external peripherals are incorporated in the Z80382. These on-chip peripherals reduce system chip count and interconnections on the external bus. Figure 1 illustrates these peripherals, and they are summarized in the following paragraphs. Figure 2 illustrates the pin names.
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Z80382 、 Z8L382 、 Z80380 、 Z80380C 、 Z80 、 Z180 、 Z380 、 Z382 |
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User's Guide |
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Please see the document for details |
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QFP;VQFP |
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English Chinese Chinese and English Japanese |
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2019/07/17 |
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UM007103-0302 |
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10.1 MB |
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