ADM7008
Electrical Specification
5.4.3 SMII/SS_SMII Transmit Timing
TXCLK
SYNC (SMII)
TX_SYNC (SSMII)
t_ST_DSETUP
t_ST_DHOLD
TXEN
= 1
TXEN
TXEN
= 0
TXER
TXER
TXD0
TXD1
TXER
0
0
TXD
= 1
t_ST_TXE2ML
t_ST_TXE2MH
Transmit To Medium
Figure 5-8 SMII/SS_SMII Transmit Timing
Symbol
Description
MIN
TYP
MAX UNIT
t_ST_DSETUP TXD to REFCLK Rising Setup Time
2
2
ns
ns
t_ST_DHOLD
TXD to REFCLK Rising Hold Time
t_ST_TXE2MH10 TXEN asserts to data transmit to medium
390
ns
(100M)
0
t_ST_TXE2MH10 TXEN asserts to data transmit to medium
(10M)
2340 ns
430
ns
3800 ns
t_ST_TXE2ML10 TXEN de-asserts to finish transmitting (100M)
0
t_ST_TXE2ML10 TXEN de-asserts to finish transmitting (10M)
Table 5-11 SMII/SS_SMII Transmit Timing
ADMtek Inc.
5-9
ETC [ ETC ]
