AM79C978 Advanced Micro Devices, AM79C978 Datasheet - Page 226

• Manufacturer Part Number: AM79C978
• Description: Single-Chip 1/10 Mbps PCI Home Networking Controller
• Manufacturer: Advanced Micro Devices

SWITCHING CHARACTERISTICS: BUS INTERFACE (CONCLUDED)
10BASE-T
Note: RX± pulses narrower than t
turn internal Carrier Sense off.
226
Symbol
t
PWKRD
t
TETD
Transmit End of Transmission
RX± Pulse Width Maintain/Turn Off Threshold
TX
RX
Parameter Description
V TSQ-
V TSQ+
Figure 54. 10 Mbps Transmit (TX±) Timing Diagram
Figure 55. 10 Mbps Receive (RX±) Timing Diagram
PWDRD
(min) will maintain internal Carrier Sense on. RX± pulses wider than t
t (PWKRD)
Am79C978
t PWKRD
|V
IN
Test Conditions
| > |V
THS
t (PWKRD)
| (Note 1)
t TETD
Min
250
136
Max
375
200
PWKRD
22206B-57
22206B-58
(max) will
Unit
ns
ns