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AT697F Datasheet(PDF) 116 Page - ATMEL Corporation |
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AT697F Datasheet(HTML) 116 Page - ATMEL Corporation |
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116 / 155 page ![]() Table 101. PCI Initiator Write Register - PCIIW Address = 0x8000014C 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 reserved ben[3:0] r/w r/w 0x0000 000 0x0 Bit Number Mnemonic Description 3..0 ben[3:0] Byte enables for writes to the PCI core configuration space ‘0’ = enabled ‘1’ = disabled 116 7703C–AERO–6/09 AT697F ADVANCE INFORMATION Each of the 4 bits is assigned to one 8-bit lane. • bit ben[3] is applied to Byte 3, the most significant byte (MSB) • bit ben[2] is applied to Byte 2 • bit ben[1] is applied to Byte 1 • bit ben[0] is applied to Byte 0, the less significant byte (LSB) Table 102. PCI DMA configuration Register - PCIDMA address = 0x80000150 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 reserved com[3:0] wdcnt[7:0] r/w r/w r/w 0x0000 0 0 0x0 0x00 Bit Number Mnemonic Description 12 b2b Use back2back-mode. Can be written to 1, if this transaction is to the same target, as the last one. Note: works only, if the core is enabled for back2back mode. 11..8 com[3:0] PCI command to be used in DMA mode. 7..0 wdcnt[7:0] Word count. Minimum number of words for the burst. Table 103. PCI Initiator Status Register - PCIIS address = 0x80000154 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 reserved sys dmas[3:0] act xff xfe rfe ss[3:0] r/w r r r r r r r 0x0000 0 x 0x0 0 0 1 1 0x0 |
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