参数资料
型号: MSC8101VT1250F
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 64-BIT, 62.5 MHz, OTHER DSP, PBGA332
封装: 17 X 17 MM, LIDDED FLIP CHIP, PLASTIC, BGA-332
文件页数: 58/104页
文件大小: 1811K
代理商: MSC8101VT1250F
AC Timings
MSC8101 Technical Data, Rev. 18
Freescale Semiconductor
2-17
2.6.5.2 DMA Data Transfers
Table 2-18 describes the DMA signal timing.
The DREQ
signal is synchronized with the falling edge of DLLIN. DONE timing is relative to the rising edge of DLLIN.
To achieve fast response, a synchronized peripheral should assert DREQ according to the timings in Table 2-18.
Figure 2-11 shows synchronous peripheral interaction.
Table 2-18.
DMA Signals
Number
Characteristic
Minimum
Maximum
Units
72
DREQ set-up time before DLLIN falling edge
6
ns
73
DREQ hold time after DLLIN falling edge
0.5
ns
74
DONE set-up time before DLLIN rising edge
9
ns
75
DONE hold time after DLLIN rising edge
0.5
ns
76
DACK/DRACK/DONE delay after DLLIN rising edge
0.5
9
ns
Figure 2-11.
DMA Signals
DLLIN
DREQ
DONE Input
DACK/DONE/DRACK Outputs
73
72
74
75
76
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