am79c974 Advanced Micro Devices, am79c974 Datasheet - Page 107

• Manufacturer Part Number: am79c974
• Description: Pcnettm-scsi Combination Ethernet And Scsi Controller For Pci Systems
• Manufacturer: Advanced Micro Devices

SWITCHING WAVEFORMS
Attachment Unit Interface
Note:
1. Internal signal and is shown for clarification only.
t
ISTDCLK
ITXDAT+
PWODI
(Note 1)
(Note 1)
(Note 1)
V
XTAL1
ITXEN
ASQ
DI+/–
DO+
DO–
DO
1
t
PWKDI
1
Bit (n–2)
1
Transmit Timing – End of Frame (Last Bit = 1)
0
P R E L I M I N A R Y
0
Bit (n–1) Bit (n)
Receive Timing
1
Am79C974
Typical > 250 ns
t
DOETD
t
PWKDI
18681A-52
18681A-51
AMD
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