KSZ8721CL Micrel Inc, KSZ8721CL Datasheet - Page 26

• Manufacturer Part Number: KSZ8721CL
• Description: IC TXRX PHY 10/100 3.3V 48-LQFP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KSZ8721CL

• Number Of Drivers/receivers: 1/1
• Protocol: MII
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1673; KSZ8721CL

KS8721CL
Symbol
M9999-041405
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 3. 100BASE-T MII Transmit Timing Parameters
Figure 6. 100BASE-T MII Transmit Timing
t
SU2
t
SU1
Data
In
t
t
CRS1
LAT
t
t
HD2
HD1
Symbol
Out
26
t
CRS2
Min
10
10
0
0
0
Typ
4
4
9
Max
Micrel, Inc.
April 2005
Units
BT
BT
BT
ns
ns
ns
ns
ns