ksz8851-mql Micrel Semiconductor, ksz8851-mql Datasheet - Page 26

• Manufacturer Part Number: ksz8851-mql
• Description: Single-port Ethernet Mac Controller With 8/16-bit Or 32-bit Non-pci Interface
• Manufacturer: Micrel Semiconductor

Straight Cable
A straight cable connects an MDI device to an MDI-X device or an MDI-X device to an MDI device. The following diagram
shows a typical straight cable connection between a network interface card (NIC) and a switch, or hub (MDI-X).
Crossover Cable
A crossover cable connects an MDI device to another MDI device, or an MDI-X device to another MDI-X device. The
following diagram shows a typical crossover cable connection between two chips or hubs (two MDI-X devices).
February 2009
Micrel, Inc.
Media Dependent Interface
Transmit Pair
Receive Pair
Modular Connector
RJ45 Pins
10/100 Ethernet
(RJ-45)
Figure 4. Typical Straight Cable Connection
1
2
3
6
NIC
Table 2. MDI/MDI-X Pin Definitions
MDI
1
2
3
4
5
6
7
8
Signals
TD+
RD+
RD-
TD-
Straight
Cable
26
RJ45 Pins
1
2
3
6
Media Dependent Interface
MDI-X
(Repeater or Switch)
Modular Connector
1
2
3
4
5
6
7
8
10/100 Ethernet
(RJ-45)
HUB
Signals
Transmit Pair
Receive Pair
RD+
TD+
RD-
TD-
KSZ8851-16/32 MQL/MQLI
M9999-021309-1.1