AM79C970A Advanced Micro Devices, AM79C970A Datasheet - Page 38
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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When the host is not yet ready when the PCnet-PCI II
controller asserts TRDY, the device will wait for the host
to assert IRDY. When the host asserts IRDY and
FRAME is still asserted, the PCnet-PCI II controller will
38
AMD
Figure 8. Disconnect Of Slave Burst Transfer—Host Inserts Wait States
DEVSEL
FRAME
TRDY
STOP
IRDY
C/BE
CLK
PAR
AD
1
1st DATA
P R E L I M I N A R Y
2
BE
Am79C970A
PAR
3
finish the first data phase by deasserting TRDY one
clock later. At the same time, it will assert STOP to signal
a disconnect to the host. STOP will stay asserted until
the host removes FRAME.
4
DATA
BE
5
PAR
6
19436A-11
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