AM79C970A Advanced Micro Devices, AM79C970A Datasheet - Page 33

• Manufacturer Part Number: AM79C970A
• Description: PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
• Manufacturer: Advanced Micro Devices

bit 7), which is hardwired to ONE. The PCnet-PCI II
controller is capable of detecting an I/O or a memory
mapped I/O cycle even when its address phase immedi-
ately follows the data phase of a transaction to a differ-
ent target, without any idle state in-between. There will
DEVSEL
FRAME
TRDY
STOP
IRDY
C/BE
CLK
PAR
AD
1
ADDR
0010
2
PAR
Figure 3. Slave Read Using I/O Command
3
4
P R E L I M I N A R Y
Am79C970A
5
be no contention on the DEVSEL, TRDY and STOP
signals, since the PCnet-PCI II controller asserts
DEVSEL on the second clock after FRAME is asserted
(medium timing).
6
BE
7
8
9
DATA
10
PAR
19436A-6
11
AMD
33