KS8721SL-EVAL Micrel Inc, KS8721SL-EVAL Datasheet - Page 29

• Manufacturer Part Number: KS8721SL-EVAL
• Description: BOARD EVAL EXPERIMENT KS8721SL
• Manufacturer: Micrel Inc

Specifications of KS8721SL-EVAL

• Main Purpose: Interface, Ethernet Controller (PHY and MAC)
• Embedded: No
• Utilized Ic / Part: KSZ8721SL
• Primary Attributes: 1 Port, 100BASE-TX/100BASE-FX/10BASE-T
• Secondary Attributes: MII, RMII, Auto MDI, MDIX, >130 Meter Cable Driver, LDO, IEEE802.3u Compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 576-1010

KS8721BL/SL (3.3V Single Power Supply 10/100BaseTX/FX MII Physical Layer Transceiver)
Auto Crossover (Auto MDI/MDI-X)
Automatic MDI/MDI-X configuration is intended to eliminate the need for
crossover cables between similar devices. The assignment of pin-outs for a
10/100 BASE-T crossover function cable is shown below.
This feature can eliminate the confusion in real applications so both straight
cable and crossover cable can be used. This feature is controlled by
register 1f:13, see the “Register 1fh” section for details.
1 0 / 1 0 0 B a s e - T
M e d ia D e p e n d e n t I n t e r f a c e
M o d u la r C o n n e c t o r ( R J 4 5 )
1 0 / 1 0 0 B A S E - T
M e d ia D e p e n d e n t In t e r f a c e
T r a n s m i t P a ir
R e c e iv e P a ir
T r a n s m it P a ir
R e c e iv e P a i r
( R e p e a t e r o r S w it c h )
M o d u la r C o n n e c t o r
( R J 4 5 )
N I C
H U B
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
S t r a i g h t T h r o u g h C a b l e
C r o s s o v e r C a b l e
- 29 -
KS8721BL/SL Preliminary Rev 0.90
1 0 / 1 0 0 B a s e - T
M e d i a D e p e n d e n t I n t e r f a c e
1 0 / 1 0 0 B a s e - T
M e d ia D e p e n d e n t I n t e r f a c e
M o d u la r C o n n e c t o r ( R J 4 5 )
( R e p e a t e r o r S w i t c h )
M o d u l a r C o n n e c t o r
1
2
3
4
5
6
7
8
( R e p e a t e r o r S w it c h )
1
2
3
4
5
6
7
8
( R J 4 5 )
T r a n s m i t P a i r
H U B
R e c e iv e P a ir
T r a n s m it P a ir
R e c e iv e P a ir
H U B
Aug, 2003