ksz8021rnli Micrel Semiconductor, ksz8021rnli Datasheet - Page 20

• Manufacturer Part Number: ksz8021rnli
• Description: 10base-t/100base-tx Phy With Rmii Support
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
Straight Cable
A straight cable connects a MDI device to a MDI-X device, or a MDI-X device to a MDI device. Figure 5 depicts a typical
straight cable connection between a NIC card (MDI) and a switch, or hub (MDI-X).
Crossover Cable
A crossover cable connects a MDI device to another MDI device, or a MDI-X device to another MDI-X device. Figure 6
depicts a typical crossover cable connection between two switches or hubs (two MDI-X devices).
August 2010
RJ-45 Pin
1
2
3
6
Figure 6. Typical Crossover Cable Connection
Figure 5. Typical Straight Cable Connection
MDI
Table 4. MDI/MDI-X Pin Definition
Signal
RX+
TX+
RX-
TX-
20
RJ-45 Pin
1
2
3
6
MDI-X
Signal
RX+
TX+
RX-
TX-
KSZ8021RNL / KSZ8031RNL
M9999-082710-1.0