KS8721B-EVAL Micrel Inc, KS8721B-EVAL Datasheet - Page 25
![no-image](/images/manufacturer_photos/0/4/434/micrel_inc_sml.jpg)
KS8721B-EVAL
Manufacturer Part Number
KS8721B-EVAL
Description
BOARD EVAL EXPERIMENT KS8721B
Manufacturer
Micrel Inc
Datasheet
1.KSZ8721B_TR.pdf
(32 pages)
Specifications of KS8721B-EVAL
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
576-1006
- Current page: 25 of 32
- Download datasheet (342Kb)
Symbol
t
t
t
t
t
t
t
t
April 2005
KS8721B/BT
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 3. 100BaseT MII Transmit Timing Parameters
t
Figure 5. 100BaseT MII Transmit Timing
SU2
t
Data
In
SU1
t
t
CRS1
LAT
t
t
HD2
HD1
Symbol
Out
25
t
CRS2
Min
10
10
0
0
0
Typ
4
4
9
Max
M9999-041405
Micrel, Inc.
Units
BT
BT
BT
ns
ns
ns
ns
ns
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