WBLXT9785HE.D0-865114 Cortina Systems Inc, WBLXT9785HE.D0-865114 Datasheet - Page 182
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WBLXT9785HE.D0-865114
Manufacturer Part Number
WBLXT9785HE.D0-865114
Description
Manufacturer
Cortina Systems Inc
Datasheet
1.WBLXT9785HE.D0-865114.pdf
(221 pages)
Specifications of WBLXT9785HE.D0-865114
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LXT9785/LXT9785E
Datasheet
249241, Revision 11.0
16 April 2007
Figure 49
Table 71
Cortina Systems
SS-SMII - 10BASE-T Receive Timing
SS-SMII - 10BASE-T Receive Timing Parameters
®
REFCLK rising edge to RxCLK rising
edge
RxData/RxSYNC output delay from
RxCLK rising edge
RxData/RxSYNC Rise/Fall time
Receive Start-of-Frame to CRS asserted
Receive Start-of-Idle to CRS de-asserted
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production
2. Assumes each SMII segment is sampled for CRS.
3. “BT” signifies bit times at the line rate (that is, BT = 100 ns if using 10BASE-T, BT = 10 ns if using
Note:
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
testing.
100BASE-TX or 100BASE-FX).
The table latency values are derived with the hardware configuration pins FIFOSEL[1:0] set at a
default configuration of 00 (32 bits of initial fill).
REFCLK
RxSYNC
RxData
Parameter
RxCLK
TPFI
t
4
Sym
t
1
t1
t2
t3
t4
t5
t
2
Min
1.5
–
–
–
–
Typ1
1.5
10
18
–
1
Max
t
21
3
11
–
5
–
Units
BT
BT
ns
ns
ns
3
3
t
5
Minimum C
Maximum C
Synchronous sampling of
SMII
Synchronous sampling of
SMII
6.0 Test Specifications
Test Conditions
2
2
L
L
–
–
= 5pF
= 40pF
Page 182
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