10/100 Non-PCI Ethernet Single Chip MAC + PHY
Datasheet
AC TEST TIMING CONDITIONS
Unless otherwise noted, all test conditions are as follows:
1. VDD = 3.3V +/-5%
2. RBIAS = 11K +/- 1%, no load
3. Measurement Points:
4. TPO±, TPI±: 0.0 V During Data, ±0.3V at start/end of packet
5. All other inputs and outputs: 1.4 Volts
Table 14.1 Transmit Timing Characteristics
LIMIT
SYM
PARAMETER
UNIT
CONDITIONS
MIN
TYP
MAX
t30
Transmit Propagation Delay
60
140
600
±0.7
±5.5
nS
100Mbps
10Mbps
100Mbps
10Mbps
10Mbps
nS
t31
Transmit Output Jitter
nS pk-pk
nS pk-pk
nS
t32
t33
Transmit SOI Pulse Width to
0.3V
250
80
Transmit SOI Pulse Width to
40mV
4500
nS
10Mbps
t34
t35
LEDn Delay Time
LEDn Pulse Width
25
mS
mS
105
100Mbps
t
t
31
30
TPO±
FXO±
IDLE
IDLE
/J/K/
DATA
/T/R/
IDLE
10Mbps
t
33
t
31
t
t
t
32
30
TPO±
PREAMBLE
PREAMBLE
DATA
DATA
SOI
t
34
35
LEDn
TXEN Bit is Set
Figure 14.11 Transmit Timing
SMSC LAN91C111-REV B
133
Revision 1.8 (07-13-05)
DATASHEET
SMSC [ SMSC CORPORATION ]
