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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PM7375-SC датащи(PDF) 48 Page - PMC-Sierra, Inc |
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PM7375-SC датащи(HTML) 48 Page - PMC-Sierra, Inc |
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48 / 430 page  PM7375 LASAR-155 DATA SHEET PMC-931127 ISSUE 6 LOCAL ATM SAR & PHYSICAL LAYER PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 32 RDB I/O 162 For slave mode operation the active low read enable (RDB) signal is configured as an input. RDB is low during LASAR-155 Microprocessor Interface Port register read accesses. The LASAR-155 drives the D[15:0] bus with the contents of the addressed register while RDB and CSB are low. For master mode operation the active low read enable (RDB) signal is configured as an output. RDB is low during LASAR-155 Local Bus read accesses. The device being read should drive the D[7:0] bus with the contents of the addressed memory location while RDB and either CS1B or CS2B is low. For this mode of operation RDB is generated on the rising edge of PCICLK. WRB I/O 163 For slave mode operation the active low write strobe (WRB) signal is configured as an input. WRB is low during a LASAR-155 Microprocessor Interface Port register write accesses. The D[15:0] bus contents are clocked into the addressed register on the rising WRB edge while CSB is low. For master mode operation the active low write strobe (WRB) signal is configured as an output. WRB is low during a LASAR-155 Local Bus write accesses. D[7:0] bus contents are clocked into the addressed memory location of the device being written to on the rising WRB edge while either CS1B or CS2B is low. For this mode of operation WRB is generated on the rising edge of PCICLK. |
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