KSZ8041TL A3 TR Micrel Inc, KSZ8041TL A3 TR Datasheet - Page 31

• Manufacturer Part Number: KSZ8041TL A3 TR
• Manufacturer: Micrel Inc

Specifications of KSZ8041TL A3 TR

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Micrel, Inc.
The following figure and table shows the receive data/control format for each segment:
Collision Detection
Collisions occur when CRS and TX_EN are simultaneously asserted. The MAC regenerates the MII collision signal from
CRS and TX_EN.
December 2009
CRS
X
X
CLOCK
SYNC
RX
RX_DV
0
1
CRS
RXD0
RX_ER
from
pervious
frame
One Data Byte
RX_DV
SMII RX Bit
CRS
RX_DV
RXD[0:7]
RXD0
Figure 3. SMII Receive Data/Control Segment
RXD1
Speed
0=10M
1=100M
Table 8. SMII RXD[0:7] Encoding Table
Table 7. SMII RX Bit Description
RXD1
Description
Carrier Sense
Receive Data Valid
Encoded Data
See SMII RXD[0:7] Encoding Table (below)
RXD2
Duplex
0=Half
1=Full
RXD2
RXD3
Link
0=Down
1=Up
31
RXD3
RXD4
Jabber
0=No
1=Yes
RXD4
RXD5
Upper
Nibble
0=Invalid
1=Valid
RXD5
RXD6
RXD6
False
Carrier
Detected
KSZ8041TL/FTL/MLL
M9999-120909-1.2
RXD7
RXD7
1