KS8721BL Micrel Inc, KS8721BL Datasheet - Page 27
![Special Function IC](/photos/6/81/68171/576-48-lqfp_sml.jpg)
KS8721BL
Manufacturer Part Number
KS8721BL
Description
Special Function IC
Manufacturer
Micrel Inc
Type
Transceiverr
Specifications of KS8721BL
Leaded Process Compatible
No
Peak Reflow Compatible (260 C)
No
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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With
576-1007 - BOARD EVAL EXPERIMENT KS8721BL
Lead Free Status / RoHS Status
Not Compliant, Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
KS8721BL
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Symbol
May 2004
KS8721BL/SL
t
t
t
t
t
t
t
t
P
WL
WH
SU
HD
RLAT
CRS1
CRS2
Parameter
RXC Period
RXC Pulse Width
RXC Pulse Width
RXD [3:0], RXER, RXDV Set-Up to Rising Edge of RXC
RXD [3:0], RXER, RXDV Hold from Rising Edge of RXC
CRS to RXD Latency, 4B or 5B Aligned
“Start of Stream” to CSR Asserted
“End of Stream” to CSR De-Asserted
RX+/RX-
CRS
RXDV
RXD[3:0]
RXER
RXC
Table 5. 100BASE-T MII Receive Timing Parameters
Start of
Stream
Figure 6. 100BASE-T MII Receive Timing
t
CRS1
t
RLAT
t
SU
27
t
HD
End of
Stream
t
WL
t
t
t
P
CRS2
WH
Min
20
20
1
Typ
140
170
40
20
20
2
M9999-051704
Max
3
Micrel
Units
BT
ns
ns
ns
ns
ns
ns
ns