ADSP-BF534/ADSP-BF536/ADSP-BF537
External DMA Request Timing
Table 28 and Figure 15 describe the external DMA request
operations.
Table 28. External DMA Request Timing
Parameter
Timing Requirements
tDS
tDH
tDMARACT
tDMARINACT
DMARx Asserted to CLKOUT High Setup
CLKOUT High to DMARx Deasserted Hold Time
DMARx Active Pulse Width
DMARx Inactive Pulse Width
Min
Max
6.0
0.0
1.0 × tSCLK
1.75 × tSCLK
Unit
ns
ns
ns
ns
CLKOUT
tDS
tDH
DMAR0/1
(ACTIVE LOW)
tDMARACT
DMAR0/1
(ACTIVE HIGH)
tDMARINACT
Figure 15. External DMA Request Timing
Rev. J | Page 35 of 68 | February 2014