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Timing Diagrams
300
NS7520 Hardware Reference, Rev. D 03/2006
External DMA timing
BCLK max frequency: 55.296 MHz
Operating conditions:
External DMA timing parameters
Temperature: -15.00 (min) 110.00 (max)
Voltage: 1.60 (min) 1.40 (max)
Output load: 25.0pf
Input drive: CMOS buffer
Num Description Min Max Unit
72 BCLK high to DACK* valid 14 ns
75 BCLK high to DONE* (output) valid 15 ns
70 DREQ* low to BCLK high (setup) 5 ns
71 BCLK high to DREQ* valid (hold) 0 ns
73 DONE* (input) valid BCLK high (setup) 5 ns
74 BLCK high to DONE* (input) valid (hold) 0 ns