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PM3350-SW Datasheet(PDF) 178 Page - PMC-Sierra, Inc |
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PM3350-SW Datasheet(HTML) 178 Page - PMC-Sierra, Inc |
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178 / 224 page  ELAN 8X10 PM3350 ELAN 8 X10 DATA SHEET PMC-970109 ISSUE 3 8 PORT ETHERNET SWITCH PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND PMC-SIERRA, INC. CUSTOMERS ONLY 176 Register 0x21: DMA Stats (cr1) Bit Type Function Default Bit 15 R DMSR_gntpend X Bit 14 R DMSR_PMWF X Bit 13 R DMSR_PMCF X Bit 12 R DMSR_PMRE X Bit 11 to 8 R DMSR_chsel[3:0] X Bit 7 R DMSR_flerr X Bit 6 R DMSR_merr X Bit 5 to 0 R DMSR_state[5:0] X DMSR_state[5:0]: current DMA state machine state DMSR_merr: PCI master error detected DMSR_flerr: empty free list error detected DMSR_chsel[3:0]: current internal DMA channel select DMSR_PMRE: PCI master read data FIFO empty flag DMSR_PMCF: PCI master read control FIFO full flag DMSR_PMWF: PCI master write FIFO full flag DMSR_gntpend: This bit becomes a logic 1 when a DMA memory grant is pending. |
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