AM79C873 Advanced Micro Devices, AM79C873 Datasheet - Page 36

• Manufacturer Part Number: AM79C873
• Description: NetPHY -1 10/100 Mbps Ethernet Physical Layer Single-Chip Transceiver with 100BASE-FX Support
• Manufacturer: Advanced Micro Devices

Auto-Negotiation and Fast Link Pulse Timing
Auto-Negotiation and Fast Link Pulse Timing Parameters
MII 10BASE-T Nibble Transmit Timing
MII-10BASE-T Nibble Transmit Timing Parameters
36
TX_EN, TX_ER
Symbol
Symbol
tTX
tTX
tTX
t1
t2
t3
t4
t5
t1
t2
-
TXD [0:3],
pd
TX_CLK
h
s
10TX
CRS
Clock/Data Pulse Width
Clock Pulse To Data Pulse Period
Clock Pulse To Clock Pulse Period
FLP Burst Width
FLP Burst To FLP Burst Period
Clock/Data Pulses Per Burst
TXD[0:3), TX_EN, TX_ER Setup To
TX_CLK High
TXD[0:3], TX_EN, TX_ER Hold From
TX_CLK High
TX_EN Sampled To CRS Asserted
TX_EN Sampled To CRS De-asserted
TX_EN Sampled To 10TXO Out (Tx
Latency)
Fast Link
10TX0
Pulses
tTX
Figure 9. Auto-Negotiation and Fast Link Pulse Timing Diagram
S
Figure 10. MII 10BASE-T Nibble Transmit Timing Diagram
Parameter
Parameter
Clock Pulse
FLP Burst
t
t
4
t
1
1
tTX
pd
P R E L I M I N A R Y
t
2
Am79C873
t
5
Conditions
Conditions
Data Pulse
t
3
DATA = 1
tTX
h
Min
Min
FLP Burst
33
11
0
-
-
-
-
-
-
-
-
Clock Pulse
t
2
Typical
Typical
13.93
62.5
100
125
33
15
2
2
2
-
-
Max
Max
33
20
4
4
-
-
-
-
-
-
-
22164A-12
22164A-11
Unit
Unit
ms
ms
BT
BT
BT
ea
ns
us
us
ns
ns