KS8721BL A4 TR Micrel Inc, KS8721BL A4 TR Datasheet - Page 26
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KS8721BL A4 TR
Manufacturer Part Number
KS8721BL A4 TR
Description
Manufacturer
Micrel Inc
Datasheet
1.KS8721BL_A4_TR.pdf
(34 pages)
Specifications of KS8721BL A4 TR
Lead Free Status / RoHS Status
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KS8721BL/SL
Symbol
Note:
1 1BT = 10ns at 100BASE-TX.
M9999-022105
t
t
t
t
t
t
t
t
SU1
SU2
HD1
HD2
HD3
CRS1
CRS2
LAT
Parameter
TXD [3:0] Set-Up to TXC High
TXEN Set-Up to TXC High
TXD [3:0] Hold After TXC High
TXER Hold After TXC High
TXEN Hold After TXC High
TXEN High to CRS Asserted Latency
TXEN Low to CRS De-Asserted Latency
TXEN High to TX+/TX– Output (TX Latency)
TXC
TXEN
TXD[3:0],
TXER
CRS
TX+/TX-
Table 4. 100BASE-T MII Transmit Timing Parameters
Figure 5. 100BASE-T MII Transmit Timing
t
t
SU2
SU1
Data
In
t
CRS1
t
LAT
t
t
HD2
HD1
Symbol
Out
26
t
CRS2
Min
10
10
0
0
0
Typ
4
4
9
February 2005
Max
Micrel
Units
BT
BT
BT
ns
ns
ns
ns
ns
(1)
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