NS486SXF Datasheet, PDF (31/44 Pages) National Semiconductor (TI) – NS486TMSXF Optimized 32-Bit 486-Class Controller with On-Chip Peripherals for Embedded Systems

3 0 Device Specifications (Continued)
3 3 5 Peripheral Timing Specifications
3 3 5 1 DMA CONTROLLER
FIGURE 3-9 DMA Controller Read Timing Diagram
TL H 12514 – 18
Symbol
t_rdyl
t_rdyh
t_eoprci
t_eopwci
t_drqlwci
t_drqlrci
t_dckrca
FIGURE 3-10 DMA Controller Write Timing Diagram
TABLE 3-9 DMA Controller Specifications
Parameter
Min
Typ
RDY Inactive Low Setup to CMD Active
b15 ns
RDY Active High Setup to CMD Inactive
45 ns
2T a 5 ns
2T a 36 ns
T a 40 ns
2T a 2 2 ns
TL H 12514 – 19
Max
2T a 15 ns
31
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