RTL8201BL
8.2.4 SNI Timing of Reception Cycle
Shown is an example of transfer of a packet from PHY to MAC in SNI interface. SNI mode only runs in 10Mbps.
Symbol
t1
Description
Minimum
Typical
Maximum
Unit
ns
RXCLK high pulse width
36
36
80
40
40
t2
t3
t4
t5
t6
t7
t8
RXCLK low pulse width
ns
RXCLK period
120
ns
RXD0 setup to RXCLK rising edge
RXD0 hold after RXCLK rising edge
Receive frame to CRS high
End of receive frame to CRS low
Decoder acquisition time
ns
ns
50
ns
160
1800
ns
600
ns
t
3
VIH(min)
RXCLK
RXD0
VIL(max)
t
t
2
t
t
5
1
4
VIH(min)
VIL(max)
RXCLK
t
8
RXD0
t
t
7
6
CRS
TPRX+-
2002-03-29
Rev.1.2
25