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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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Z8018233FSC 数据表(PDF) 39 Page - Zilog, Inc. |
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Z8018233FSC 数据表(HTML) 39 Page - Zilog, Inc. |
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39 / 109 page  3-39 Z80182/Z8L182 ZILOG INTELLIGENT PERIPHERAL PRELIMINARY Zilog DS971820600 DMA REGISTERS DAR0L Read/Write Addr 23H DA7 DA0 DAR0H Read/Write Addr 24H DA15 DA8 DAR0B Read/Write Addr 25H DA16 DA19 - -- - Bits 0-2 (3) are used for DAR0B A19, x x x x A18, x x x x A17, 0 0 1 1 A16 0 1 0 1 DMA Transfer Request /DREQ0 (external) TDR0 (ASCI0) TDR1 (ASCI1) Not Used Figure 35. DMA 0 Destination Address Registers BCR0L Read/Write Addr 26H BC7 BC0 BCR0H Read/Write Addr 27H BC15 BC8 Figure 36. DMA 0 Byte Counter Registers MAR1L Read/Write Addr 28H MA7 MA0 MAR1H Read/Write Addr 29H MA15 MA8 MAR1B Read/Write Addr 2AH MA16 MA19 - -- - Figure 37. DMA 1 Memory Address Registers BCR1L Read/Write Addr 2EH BC7 BC0 BCR1H Read/Write Addr 2FH BC15 BC8 Figure 39. DMA 1 Byte Count Registers IAR1L Read/Write Addr 2BH IA7 IA0 IAR1H Read/Write Addr 2CH IA15 IA8 Figure 38. DMA I/O Address Registers |
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