AX88178
USB to 10/100/1000 Gigabit Ethernet/HomePNA Controller
Trclk
Trs
Trch Trcl
RX_CLK
Trh
RXD [7:0]
RX_DV, RX_ER
Symbol
Description
Min
Typ
8.0
4.0
4.0
-
Max
8.5
-
-
-
-
Units
ns
ns
ns
ns
Trclk RX_CLK clock cycle time
7.5
2.5
2.5
2.0
0.0
Trch
Trcl
Trs
RX_CLK clock high time
RX_CLK clock low time
RXD [7:0], RX_DV, and RX_ER setup time
RXD [7:0], RX_DV, and RX_ER hold time
Trh
-
ns
7.4.4 RGMII Timing
Ttclk
Ttch
Ttcl
TXC
TSKEWT
TSKEWT
TXD [3:0]
TXD [3:0] TXD [7:4]
TX_EN (TX_CTL)
TX_EN
TX_ER
TXC
< 500ps
< 500ps
TXD [3:0], TX_EN (TX_CTL)
< 500ps
< 500ps
30
ASIX ELECTRONICS CORPORATION