KS8721BL Micrel Inc, KS8721BL Datasheet - Page 27

• 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

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