DS33R41 Maxim Integrated Products, DS33R41 Datasheet - Page 309

• Manufacturer Part Number: DS33R41
• Description: Network Controller & Processor ICs Inverse-Multiplexing Ethernet Mapper wit
• Manufacturer: Maxim Integrated Products

14.3 RMII Interface
Table 14-7. Transmit RMII Interface
(Note 1,
REF_CLK Frequency
REF_CLK Period
REF_CLK Low Time
REF_CLK High Time
REF_CLK to TXD,
TX_EN Delay
Figure 14-3. Transmit RMII Interface Timing
Note 1:
PARAMETER
REF_CLK
TXD[1:0]
TX_EN
Figure
Timing parameters in this table are guaranteed by design (GBD).
14-3)
SYMBOL
t1
t2
t3
t4
t2
MIN
7
7
5
10Mbps
±50ppm
309 of 335
50MHz
TYP
20
t1
MAX
13
13
10
t4
t4
MIN
7
7
5
t3
100Mbps
±50ppm
50MHz
TYP
20
MAX
13
13
10
UNITS
ns
ns
ns
ns