LAN91C111 Datasheet, PDF (111/125 Pages) SMSC Corporation – 10/100 Non-PCI Ethernet Single Chip MAC + PHY

LAN91C111
TABLE 14-1: TRANSMIT TIMING CHARACTERISTICS
SYM
Parameter
t31
Transmit Output Jitter
Limit
MIN
TYP
t32
Transmit SOI Pulse Width to 250
0.3V
t33
Transmit SOI Pulse Width to
40mV
t34
LEDn Delay Time
t35
LEDn Pulse Width
80
MAX
±0.7
±5.5
4500
25
105
Unit
nS pk-pk
nS pk-pk
nS
nS
mS
mS
Condition
100Mbps
10Mbps
10Mbps
10Mbps
FIGURE 14-11: TRANSMIT TIMING
100Mbps
TPO±
FXO±
IDLE
t ₃₀
IDLE
10Mbps
TPO±
LEDn
t30
t34
TXEN Bit is Set
t
31
/J/K/
DATA
/T/R/
IDLE
t31
PREAMBLE PREAMBLE
t35
DATA
DATA
t33
t32
SOI
TABLE 14-2: RECEIVE TIMING CHARACTERISTICS
SYM
Parameter
t36
Receive Input Jitter
t37
SOI Pulse Minimum Width
Required for Idle Detection
MIN
125
Limit
TYP MAX
±3.0
±13.5
200
Unit
nS pk-pk
nS pk-pk
nS
Condition
100Mbps
10Mbps
10Mbps
Measure TPI± from last zero
cross to 0.3V point
DS00002276A-page 112
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