KSZ8721BLA4TR Micrel Semiconductor, Inc., KSZ8721BLA4TR Datasheet - Page 26

• Manufacturer Part Number: KSZ8721BLA4TR
• Description: IC PHY 1CH 10/100MBPS 48LQFP T/R
• Manufacturer: Micrel Semiconductor, Inc.

KS8721B/BT
Symbol
t
t
t
t
t
t
t
t
M9999-041405
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 4. 100BaseT MII Receive Timing Parameters
Start of
Stream
Figure 6. 100BaseT MII Receivce Timing
t
CRS1
t
RLAT
t
SU
26
t
HD
End of
Stream
t
WL
t
t
t
P
CRS2
WH
Min
106
154
20
20
Typ
40
20
20
6
Max
138
186
Micrel, Inc.
April 2005
Units
BT
ns
ns
ns
ns
ns
ns
ns