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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AM79C930VCW датащи(PDF) 86 Page - Advanced Micro Devices |
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AM79C930VCW датащи(HTML) 86 Page - Advanced Micro Devices |
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86 / 161 page  AMD P R E L I M I N A R Y 86 Am79C930 Transceiver Attachment Interface Registers (TIR Space) The Transceiver Attachment Interface (TAI) Unit con- tains a total of 64 registers. Thirty-two of the registers are directly accessible from the 80188 embedded core and from the system interface through the BIU. The other 32 registers are indirectly accessed by first writing an INDEX value into the TCR Index Register (TIR24) and then executing a read or write operation to the TCR Data Port (TIR25). Since the indirectly accessible regis- ters are used mostly for TAI configuration purposes, this set of registers is labeled TAI Configuration Registers (TCR). The following section describes the directly ac- cessible registers of the TAI, or TIR. The set of 64 TAI registers is intended primarily for use by the 80188 firmware. However, access through the system interface bus to the TAI register set is provided to allow for direct access by driver code for diagnostic and other purposes. The exact location of the TIR register set as viewed from the system interface will depend upon the choice of mapping scheme as indicated by the Expand I/O Win- dow bit (bit 2 of the BSS register (SIR1)). The following tables give the address for each of the directly accessi- ble TIRs for each of the system interface modes for each of the two mapping schemes, as well as the address for each register as it appears in the memory map of the 80188 embedded core. |
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