am79c974 Advanced Micro Devices, am79c974 Datasheet - Page 33
am79c974
Manufacturer Part Number
am79c974
Description
Pcnettm-scsi Combination Ethernet And Scsi Controller For Pci Systems
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C974.pdf
(153 pages)
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Figure 7 shows two non-burst read access within one ar-
bitration cycle. The Am79C974 controller will drop
FRAME between two consecutive non-burst read cy-
cles. The Am79C974 controller will re-request the bus
right again if it is preempted before starting the second
DEVSEL
FRAME
TRDY
IRDY
C/BE
REQ
GNT
PAR
CLK
AD
1
DEVSEL is sampled by the Am79C974 controller.
2
Figure 7. Non-Burst Read Cycles Without Wait States
3
ADDR
0110
4
P R E L I M I N A R Y
PAR
5
0000
Am79C974
DATA
6
access. The example below also shows a target that can
respond to the Am79C974 controller read cycles without
wait states.
PAR
7
ADDR
0110
8
PAR
9
0000
DATA
10
PAR
11
18681A-11
AMD
33
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