am79c989 Advanced Micro Devices, am79c989 Datasheet - Page 36

• Manufacturer Part Number: am79c989
• Description: Quad Ethernet Switching Transceiver
• Manufacturer: Advanced Micro Devices

10BASE-T Interface
36
No.
40
41
42
Symbol
(RXD+) – (RXD– –)
t
t
t
TP1
TP2
TP2
VTSQ+, VLTSQ+
VTSQ–, VLTSQ–
(TXD+) – (TXD–)
VTPOV+
VTPOV–
RXD Frequency Rejection.
RXD High/Low Frequency Time-out.
TXD End of Transmission Delimiter.
Figure 6. 10BASE-T Interface Timing Diagram
Parameter Description
P R E L I M I N A R Y
Squelch
40
Am79C989
Post-Squelch Timeout
41
41
42
VTHS+, VLTHS+
VTHS–, VLTHS–
Min
160
250
—
Max
180
375
15
21173B-10
MHz
Unit
ns
ns