KS8721B TR Micrel Inc, KS8721B TR Datasheet - Page 28
KS8721B TR
Manufacturer Part Number
KS8721B TR
Description
IC TXRX PHY 10/100 2.5V 48SSOP
Manufacturer
Micrel Inc
Type
Transceiverr
Specifications of KS8721B 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-SSOP
For Use With
576-1006 - BOARD EVAL EXPERIMENT KS8721B
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
KS8721BTR
KS8721B/BT
Symbol
t
t
t
t
M9999-041405
P
MD1
MD2
MD3
Parameter
MDC Period
MDIO Set-Up to MDC (MDIO as input)
MDIO Hold after MDC (MDIO as input)
MDC to MDIO Valid (MDIO as output)
MDC
MDIO
(Into Chip)
MDIO
(Out of Chip)
Figure 8. Serial Management Interface Timing
Table 6. Serial Management Interface Timing
t
MD1
Valid
Data
t
t
MD2
MD3
t
P
28
Valid
Valid
Data
Data
Min
10
10
Typ
400
222
Max
Micrel, Inc.
April 2005
Units
ns
ns
ns
ns