ep9315 Cirrus Logic, Inc., ep9315 Datasheet - Page 38

• Manufacturer Part Number: ep9315
• Description: Enhanced Universal Platform System-on-chip Processor
• Manufacturer: Cirrus Logic, Inc.

EP9315
Enhanced Universal Platform SOC Processor
38
DSTROBE
DSTROBE
HDMARDYn
DD (15:0)
DD (15:0)
DSTROBE
(device)
(device)
DMACKn
DD(15:0)
DMARQ
(device)
(device)
(device)
(host)
(host)
STOP
Note:
(host)
(host)
(host)
DD (15:0) and DSTROBE signals are shown at both the host and the device to emphasize that cable settling time as well as
cable propagation delay shall not allow the data signals to be considered stable at the host until some time after they are driven
by the device.
t
DH
t
DVH
©
t
Copyright 2005 Cirrus Logic (All Rights Reserved)
CYCRD
Figure 23. Host Pausing an Ultra DMA data-in Burst
Figure 22. Sustained Ultra DMA data-in Burst
t
DS
t
t
SR
DVS
t
2CYCRD
t
DH
t
DVH
t
CYCRD
t
RFS
t
DS
t
RP
t
DVS
t
DH
t
2CYCRD
t
DVH
DS638PP4