am79c972b Advanced Micro Devices, am79c972b Datasheet - Page 46
am79c972b
Manufacturer Part Number
am79c972b
Description
Pcnet?-fast+ Enhanced 10/100 Mbps Pci Ethernet Controller With Onnow Support
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C972B.pdf
(130 pages)
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46
DEVSEL
FRAME
TRDY
C/BE
IRDY
REQ
GNT
CLK
PAR
AD
Figure 25. Descriptor Ring Read In Non-Burst Mode
DEVSEL
FRAME
Figure 26. Descriptor Ring Read In Burst Mode
TRDY
C/BE
IRDY
REQ
1
GNT
PAR
DEVSEL is sampled
CLK
AD
2
1
DEVSEL is sampled
0110
MD1
3
2
PAR
Am79C972
MD1
0110
4
0000
3
DATA
PAR
5
4
PAR
0000
DATA
6
5
0110
MD0
DATA
7
PAR
6
PAR
8
0000
PAR
7
DATA
9
PAR
10
21485C-29
21485C-28
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