KS8721BL TR Micrel Inc, KS8721BL TR Datasheet - Page 26

• Manufacturer Part Number: KS8721BL TR
• Description: IC TXRX PHY 10/100 3.3V 48LQFP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KS8721BL TR

• Number Of Drivers/receivers: 1/1
• Protocol: MII, RMII
• Voltage - Supply: 2.375 V ~ 2.625 V
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• For Use With: 576-1007 - BOARD EVAL EXPERIMENT KS8721BL
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: KS8721BLTR

Micrel, Inc.
Timing Diagrams
Note:
1.
June 2009
Symbol
t
t
t
t
t
t
t
t
t
SU1
SU2
HD1
HD2
CRS1
CRS2
LAT
SQE
SQEP
1BT = 10ns at 10BASE-TX
Parameter
TXD [3:0] Set-Up to TXC High
TXEN Set-Up to TXC High
TXD [3:0] 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 TXP/TXM Output (TX Latency)
COL (SQE) Delay After TXEN De-Asserted
COL (SQE) Pulse Duration
Table 3. 10BASE-T MII Transmit Timing Parameters
Figure 4. 10BASE-T MII Transmit Timing
26
Min
10
10
0
0
Typ
2.5
1.0
4
8
4
M9999-062509-1.3
Max
KS8721BL/SL
Units
BT
BT
BT
ns
ns
ns
ns
µs
µs
(1)