80220 Datasheet, PDF (60/91 Pages) LSI Computer Systems – 100BASE-TX/10BASE-T Ethernet Media Interface Adapter

80220/80221
TRANSMIT TIMING CHARACTERISTICS
Refer to Figure 17-18 for Timing Diagram
SYM
t
11
PARAMETER
TX_CLK Period
t
TX_CLK Low Time
12
t₁₃
TX_CLK High Time
t
TX_CLK Rise/Fall Time
14
t₁₅
TX_EN Setup Time
t
TX_EN Hold Time
16
t₁₇
CRS During Transmit
Assert Time
MIN
39.996
399.96
16
160
16
160
15
0
t
CRS During Transmit
18
Deassert Time
t₁₉
TXD Setup Time
15
t
TXD Hold Time
0
20
t
TX_ER Setup Time
15
21
t₂₂
TX_ER Hold Time
0
t₂₃
Transmit Propagation Delay 60
t₂₄
Transmit Output Jitter
t₂₅
Transmit SOI Pulse
250
Width To 0.3V
t
Transmit SOI Pulse
26
Width to 40 mV
t₂₇
PLEDn Delay Time
LIMIT
TYP
40
400
20
200
20
200
MAX
40.004
400.04
24
240
24
240
10
40
400
160
900
140
140
600
±0.7
±5.5
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS pk-pk
nS pk-pk
nS
4500
nS
25
mS
t₂₈
PLEDn Pulse Width
80
105
mS
CONDITIONS
100 Mbps
10 Mbps
100 Mbps
10 Mbps
100 Mbps
10 Mbps
100 Mbps
10 Mbps
100 Mbps
10 Mbps
100 Mbps, MII
100 Mbps, FBI
10 Mbps
100 Mbps
10 Mbps
10 Mbps
10 Mbps
PLEDn Programmed For
Activity
PLEDn Programmed For
Activity
60
MD400159/E