AMD Geode SC3200 - Manual (Page 390)

390 AMD Geode™ SC3200 Processor Data Book
Electrical Specifications 32581C
All timing parameters are measured at the connector of the
device to which the parameter applies. For example, the
sender stops generating STROBE edges t
RFS
after the
negation of DMARDY. Both STROBE and DMARDY timing
measurements are taken at the connector of the sender.
Figure 9-27. Initiating an UltraDMA Data in Burst Timing Diagram
t
UI
t
ACK
t
ENV
t
FS
t
FS
t
ZAD
t
ACK
t
ZIORDY
t
AZ
t
ACK
t
DVS t
DVH
t
ENV
t
ZAD
IDE_DATA[15:0]
IDE_ADDR[2:0]
IDE_CS[0:1]
IDE_REQ0
(device)
IDE_DACK0#
(host)
IDE_IOW0#
(STOP0)
(host)
IDE_IOR0#
(HDMARDY0#)
(host)
IDE_IRDY0 (DSTROBE0)
(device)
Note: The definitions for the IDE_IOW[0:1]# (STOP[0:1]), IDE_IOR[0:1]# (HDMARDY[0:1]#) and IDE_IRDY[0:1]
(DSTROBE[0:1]) signal lines are not in effect until IDE_REQ[0:1] and IDE_DACK[0:1]# are asserted.