AM79C971VCW Advanced Micro Devices, AM79C971VCW Datasheet - Page 206

• Manufacturer Part Number: AM79C971VCW
• Description: PCnet-FAST Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller for PCI Local Bus
• Manufacturer: Advanced Micro Devices

SWITCHING CHARACTERISTICS: 10BASE-T INTERFACE
Note:
Not tested, parameter guaranteed by characterization.
206
Parameter
Symbol
Transmit Timing
t
t
t
t
t
t
t
t
t
t
t
t
Receiving Timing
t
t
t
t
t
Collision Detection and SQE Test
t
t
TETD
TR
TF
TM
XMTON
XMTOFF
PERLP
PWLP
PWPLP
JA
JR
JREC
PWNRD
PWROFF
RETD
RCVON
RCVOFF
COLON
COLOFF
Parameter Name
Transmit Start of Idle
Transmitter Rise Time
Transmitter Fall Time
Transmitter rise and fall time
mismatch
XMT asserted delay
XMT deasserted delay
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
RCV asserted delay
RCV deasserted delay
COL asserted delay
COL deasserted delay
Test Condition
(10% to 90%)
(90% to 10%)
t
(See note below)
(See note below)
V
V
TM
IN
IN
Am79C971
= | t
> V
> V
THS(min)
THS(min)
TR
- t
TF
|
Min
250
20
8
75
45
20
250
1.0
136
200
TRON - 50
20
750
20
Max
350
5.5
5.5
1
100
62
24
120
55
150
750
200
TRON +
100
62
900
62
Unit
ns
ns
ns
ns
ns
ms
ms
ns
ns
ms
ms
ns
ns
ns
ns
ms
ns
ms
s