Mii/100Base-Tx Transmit Timing - Samsung KS8910 User Manual

Preliminary Spec. ver
1.4
KS8910 100/10 Mbps ETHERNET TRANSCEIVER

MII/100BASE-TX TRANSMIT TIMING

Tx_clk
Tx_en
TxD[3:0]
TPOP
t
CrS
Symbol
t1 TxD,Tx_en,Tx_er Setup to Tx-clk rise
t2 TxD,Tx_en,Tx_er Hold from Tx-clk rise
t3 Tx_en sampled toTPO out (Tx latency)
t4 Tx_en sampled to CRS asserted
t5 Tx_en sampled to CRS de-asserted
t
1
t
2
t
3
4
Figure 8-6. MII/100Base-TX Transmit Timing Diagram
Table 8-11. MII/100Base-TX Transmit Timing
Conditions
ELECTRICAL CHARACTERISTICS
t
5
Min Typ
- -
- -
- 50
- 10
- 50
Max Unit
25 ns
ns
25
ns
-
ns
-
ns
-
8-9