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| TLK111_14 Datasheet, PDF (100/110 Pages) Texas Instruments – PHYTER® Industrial Temperature 10/100Mbs Ethernet Physical Layer Transceiver | |||
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TLK111
SLLSEF8B â AUGUST 2013 â REVISED JANUARY 2014
9.9.22 10Mbs Internal Loopback Timing
Table 9-22. 10Mbs Internal Loopback Timing
PARAMETER
t1
TX_EN to RX_DV Loopback
TEST CONDITIONS
10Mbs internal loopback mode
TX_CLK
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MIN TYP MAX UNIT
1.7
μs
TX_EN
TXD[3:0]
CRS
t1
RX_CLK
RX_DV
RXD[3:0]
(1) Measurement is made from the first rising edge of TX_CLK after assertion of TX_EN.
(2) Analog loopback was used. Looping the TX to RX at the analog input/output stage.
T0362-01
Figure 9-22. 10Mbs Internal Loopback Timing
9.9.23 RMII Transmit Timing
Table 9-23. RMII Transmit Timing
PARAMETER
t1
XI Clock Period
t2
TXD[1:0] and TX_EN data setup to X1 rising
t3
TXD[1:0] and TX_EN data hold to X1 rising
t4
XI Clock to PMD Output Pair Latency
TEST CONDITIONS
50MHz Reference
Clock
VDD_IO = 3.3V
VDD_IO = 2.5V
MIN TYP MAX UNIT
20
1.4
ns
2.0
4.9
12
bits
XI
TXD[1:0]
TX_EN
PMD Output Pair
t1
t2
t3
Valid Data
t4
Symbol
100 Electrical Specifications
Figure 9-23. RMII Transmit Timing
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