KS8721BT Micrel Inc, KS8721BT Datasheet - Page 26

• Manufacturer Part Number: KS8721BT
• Description: IC TXRX PHY 10/100 TX/FX 48TQFP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KS8721BT

• Number Of Drivers/receivers: 1/1
• Protocol: MII, RMII
• Voltage - Supply: 2.375 V ~ 2.625 V
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• For Use With: 576-1009 - BOARD EVAL EXPERIMENT KS8721BT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Symbol
Symbol
t
t
t
t
t
t
t
t
M9999-030106
P
WL
WL
WL
WH
SU
HD
RLAT
CRS1
CRS2
Parameter
Parameter
RXC Period
RXC Period
RXC Period
RXC Period
RXC Period
RXC Period
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXC Pulse Width
RXD [3:0], RXER, RXDV Set-Up to Rising Edge of RXC
RXD [3:0], RXER, RXDV Set-Up to Rising Edge of RXC
RXD [3:0], RXER, RXDV Set-Up to Rising Edge of RXC
RXD [3:0], RXER, RXDV Set-Up to Rising Edge of RXC
RXD [3:0], RXER, RXDV Set-Up to Rising Edge of RXC
RXD [3:0], RXER, RXDV Set-Up to Rising Edge of RXC
RXD [3:0], RXER, RXDV Hold from Rising Edge of RXC
RXD [3:0], RXER, RXDV Hold from Rising Edge of RXC
RXD [3:0], RXER, RXDV Hold from Rising Edge of RXC
RXD [3:0], RXER, RXDV Hold from Rising Edge of RXC
RXD [3:0], RXER, RXDV Hold from Rising Edge of RXC
RXD [3:0], RXER, RXDV Hold from Rising Edge of RXC
CRS to RXD Latency, 4B or 5B Aligned
CRS to RXD Latency, 4B or 5B Aligned
CRS to RXD Latency, 4B or 5B Aligned
CRS to RXD Latency, 4B or 5B Aligned
CRS to RXD Latency, 4B or 5B Aligned
CRS to RXD Latency, 4B or 5B Aligned
“Start of Stream” to CSR Asserted
“Start of Stream” to CSR Asserted
“Start of Stream” to CSR Asserted
“Start of Stream” to CSR Asserted
“Start of Stream” to CSR Asserted
“Start of Stream” to CSR Asserted
“End of Stream” to CSR De-Asserted
“End of Stream” to CSR De-Asserted
“End of Stream” to CSR De-Asserted
“End of Stream” to CSR De-Asserted
“End of Stream” to CSR De-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
CRS 2
WH
Min
Min
Min
Min
106
106
106
106
106
106
154
154
154
154
154
154
20
20
20
20
20
20
20
20
20
20
20
20
20
Typ
Typ
Typ
Typ
40
40
40
40
40
40
20
20
20
20
20
20
20
20
20
20
20
20
6
6
6
6
6
6
Max
Max
Max
Max
138
138
138
138
138
138
186
186
186
186
186
186
March 2006
Units
Units
Units
Units
BT
BT
BT
BT
BT
BT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns