KSZ8721B TR Micrel Inc, KSZ8721B TR Datasheet - Page 26

• Manufacturer Part Number: KSZ8721B TR
• Description: IC TXRX PHY 10/100 2.5V 48SSOP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KSZ8721B 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1627 - BOARD EVALUATION FOR KSZ8721BMC576-1626 - BOARD EVALUATION FOR KSZ8721BL
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-1026-2

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