AM79C970A Advanced Micro Devices, AM79C970A Datasheet - Page 61
AM79C970A
Manufacturer Part Number
AM79C970A
Description
PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C970A.pdf
(219 pages)
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Note that the figure below assumes that the
PCnet-PCI II controller is programmed to use 32-bit
software structures (SWSTYLE = 1, 2, or 3). The byte
DEVSEL
FRAME
TRDY
IRDY
C/BE
REQ
GNT
PAR
CLK
AD
1
DEVSEL is sampled
Figure 28. Descriptor Ring Write In Non-Burst Mode
2
0111
MD2
3
PAR
P R E L I M I N A R Y
4
0000
Am79C970A
DATA
5
PAR
enable signals for the second data transfer would be
0111b, if the device was programmed to use 16-bit soft-
ware structures (SWSTYLE = 0).
6
0111
MD1
7
PAR
8
0011
DATA
9
PAR
10
19436A-31
AMD
61
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