am79c970 Advanced Micro Devices, am79c970 Datasheet - Page 138

• Manufacturer Part Number: am79c970
• Description: Pcnettm-pci Single-chip Ethernet Controller For Pci Local Bus
• Manufacturer: Advanced Micro Devices

SWITCHING CHARACTERISTICS: 10BASE-T Interface
Note:
Not tested; parameter guaranteed by characterization.
Transmit Timing
Receiving Timing
Parameter
Symbol
tPWROFF
tPWNRD
tPWPLP
tPERLP
tPWLP
tRETD
tTETD
tJREC
tTM
tJR
tTR
tTF
tJA
Parameter Description
Transmit Start of Idle
Transmitter rise time
Transmitter fall time
Transmitter rise and fall time mismatch
Idle Signal Period
Idle Link Pulse Width
Predistortion Idle Link Pulse Width
Transmit jabber activation time
Transmit jabber reset time
Transmit jabber recovery time
(minimum time gap between
transmitted frames to prevent
jabber activation)
RXD pulse width not to turn off
internal carrier sense
RXD pulse width to turn off
Receive Start of Idle
P R E L I M I N A R Y
Am79C970
Test Conditions
(10% to 90%)
(90% to 10%)
(tTM = | tTR – tTF|)
(See note below)
(See note below)
VIN > VTHS (min)
VIN > VTHS (min)
Min
250
250
136
200
1.0
75
45
20
8
Max
350
120
150
750
200
5.5
5.5
24
55
1
AMD
1-1005
Unit
ms
ms
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
s