KSZ8841-16 Micrel Semiconductor, KSZ8841-16 Datasheet - Page 24

• Manufacturer Part Number: KSZ8841-16
• Description: Single-port Ethernet Mac Controller With 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 chip (MDI), 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).
November 2005
Micrel Confidential
Media Dependent Interface
Modular Connector (RJ-45)
M e d i a D e p e n d e n t I n te r fa c
Transmit Pair
Receive Pair
RJ45 Pins
T r a n s
R ec
(Repeater or Switch)
M o d u l a r C o n n e c
10/100 Ethernet
1 0 / 1 0 0 E t h e r n et
Figure 7. Typical Cros
iv
( R J
Figure 6. Typical Straight Cable Connection
1
2
3
6
i t P a i r
N I C
e
HUB
P a ir
m
4 5 )
e
Table 1. MDI/MDI-X Pin Definitions
-
MDI
o r
1
2
3
4
5
6
7
8
3
4
5
6
7
8
1
2
Signals
t
TD+
RD+
TD-
RD-
e
24
Crossover
S tr a ig h t
Cable
C ab le
sover Cable Connection
RJ45 Pins
1
2
3
6
Media Dependent Interface
Modular Connector (RJ-45)
M e d ia D ep e n d en t I n t e rf a c
MDI-X
(Repeater or Switch)
(R e p e at e r o r S w itc
M o du la r C o nn e c
1
2
3
4
5
6
7
8
4
5
6
7
8
1
2
3
10/100 Ethernet
1 0 / 10 0 E t h e rn e t
Signals
(R J
H U B
Transmit Pair
HUB
Receive Pair
T r a n s
R e c
4 5 )
RD+
TD+
RD-
TD-
-
iv
it P a ir
e
P a ir
o r
m
)
e
t
h
e
KSZ8841-16/32 MQL/MVL
Rev 1.3