LAN91C111 Datasheet, PDF (110/125 Pages) SMSC Corporation – 10/100 Non-PCI Ethernet Single Chip MAC + PHY

FIGURE 14-10: MII TIMING
TXD0-TXD3
TXEN100
RXD0-RXD3
RX25
RX_DV
RX_ER
t27
t27
LAN91C111
t28
t28
t28
t29
t29
Parameter
t27 TXD0-TXD3, TXEN100 Delay from TX25 Rising
t28 RXD0-RXD3, RX_DV, RX_ER Setup to RX25 Rising
t29 RXD0-RXD3, RX_DV, RX_ER Hold After RX25 Rising
MIN
0
10
10
TYP MAX
Units
15
ns
ns
ns
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
SYM
Parameter
t30
Transmit Propagation Delay
MIN
60
Limit
TYP
MAX
140
600
Unit
nS
nS
Condition
100Mbps
10Mbps
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DS00002276A-page 111