ADSP-BF534/ADSP-BF536/ADSP-BF537
External DMA Request Timing
Table 22 and Figure 14 describe the external DMA request
operations.
Table 22. External DMA Request Timing
Parameter
Timing Requirements
tDR
tDH
tDMARACT
tDMARINACT
DMARx Asserted to CLKOUT High Setup
CLKOUT High to DMARx Deasserted Hold Time
DMARx Active Pulse Width
DMARx Inactive Pulse Width
CLKOUT
DMAR0/1
(Active Low)
tDR
tDMARACT
tDH
tD MARINACT
DMAR0/1
(Active High)
tDMARACT
tDMARINACT
Figure 14. External DMA Request Timing
Min
Max
6.0
0.0
1.0 × tSCLK
1.75 × tSCLK
Unit
ns
ns
ns
ns
Rev. B | Page 32 of 68 | July 2006