
DS33Z41 Quad IMUX Ethernet Mapper
147 of 167
Table 11-8. Receive RMII Interface
10Mbps 100Mbps
PARAMETER SYMBOL
MIN TYP MAX MIN TYP
MAX
UNITS
REF_CLK Frequence
50MHz
±
50ppm
50MHz
±
50ppm
MHz
REF_CLK
Period
t1 20 20 ns
REF_CLK Low Time
t2
7
13
7
13
ns
REF_CLK High Time
t3
7
13
7
13
ns
RXD, CRS_DV to
REF_CLK Setup Time
t8 5 5 ns
REF_CLK to RXD,
CRS_DV Hold Time
t9 5 5 ns
Figure 11-4. Receive RMII Interface Timing
t8
t9
REF_CLK
RXD[1:0]
CRS_DV
t8
t9
t5
t6
t7