ADM7008
Electrical Specification
5.3.3 RMII Transmit Timing
REFCLK
TXEN
t_RT_DSETUP
t_RT_DHOLD
PREAM
PREAM
TXD0
TXD1
TXD2
TXD3
TXD4
TXD5
TXDN
00
00
TXD
t_RT_TXE2MH
t_RT_TXE2ML
DATA On Medium
Figure 5-4 RMII Transmit Timing
Symbol
Description
MIN
TYP
MAX UNIT
t_RT_DSETUP TXD to REFCLK Rising Setup Time
t_RT_DHOLD TXD to REFCLK Rising Hold Time
t_RT_TXE2MH1 TXEN asserts to data transmit to medium
2
2
ns
ns
235
ns
00
t_RT_TXE2MH1 TXEN asserts to data transmit to medium
1550 ns
260
ns
1250 ns
0
t_RT_TXE2ML10 TXEN de-asserts to finish transmitting
0
t_RT_TXE2ML10 TXEN de-asserts to finish transmitting
Table 5-7 RMII Transmit Timing
ADMtek Inc.
5-5
ETC [ ETC ]
