KS8721SL TR Micrel Inc, KS8721SL TR Datasheet - Page 25

• Manufacturer Part Number: KS8721SL TR
• Description: IC TXRX PHY 10/100 3.3V 48SSOP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KS8721SL TR

• Number Of Drivers/receivers: 1/1
• Protocol: IEEE 802
• Voltage - Supply: 2.375 V ~ 2.625 V
• Mounting Type: Surface Mount
• Package / Case: 48-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: 576-1010 - BOARD EVAL EXPERIMENT KS8721SL
• Lead Free Status / RoHS Status: Not Compliant, Contains lead / RoHS non-compliant
• Other names: KS8721SLTR

Timing Diagrams
Symbol
Note:
1. BT = bit time.
May 2004
KS8721BL/SL
t
t
t
t
t
t
t
t
t
SU1
SU2
HD1
HD2
CRS1
CRS2
LAT
SQE
SQEP
1BT = 1ns @ 100BT.
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
25
Min
10
10
0
0
Typ
2.5
1.0
4
8
4
M9999-051704
Max
Micrel
Units
BT
BT
BT
ns
ns
ns
ns
s
s
(1)