lxt9785 Intel Corporation, lxt9785 Datasheet - Page 192

• Manufacturer Part Number: lxt9785
• Description: Advanced 8-port 10/100 Mbps Phy Transceivers
• Manufacturer: Intel Corporation

LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
194
Figure 55. Intel
Table 76. Intel
RxData<1:0>, CRS_DV setup to REFCLK rising
edge
RxData<1:0>, CRS_DV hold from REFCLK rising
edge
TPFI in to CRS_DV asserted
TPFI quiet to CRS_DV de-asserted
NOTE: The table latency values are derived with the hardware configuration pins FIFOSEL[1:0] set at a
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production
2. “BT” signifies bit times at the line rate (that is, BT = 100 ns if using 10BASE-T, BT = 10 ns if using
3. Values and conditions from RMII Specification, Rev. 1.2.
testing.
100BASE-TX or 100BASE-FX).
RxData[1:0]
®
3
3
®
CRS_DV
REFCLK
LXT9785/LXT9785E RMII - 10BASE-T Receive Timing Parameters
LXT9785/LXT9785E RMII - 10BASE-T Receive Timing
default configuration of 00 (32 bits of initial fill).
TPFI
Parameter
t
3
Sym
t1
t2
t3
t4
t
1
Min
1.5
12
4
2
t
2
Typ
15
–
–
3
1
t
4
Max
14
14
16
4
Revision Date: August 28, 2003
Document Number: 249241
Units
BT
BT
ns
ns
2
2
Revision Number: 007
Conditions
Datasheet
Test
–
–
–
–