KS8721BLI Micrel Inc, KS8721BLI Datasheet - Page 4

• Manufacturer Part Number: KS8721BLI
• Description: IC TXRX PHY 10/100 3.3V 48LQFP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KS8721BLI

• Number Of Drivers/receivers: 1/1
• Protocol: MII, RMII
• Voltage - Supply: 2.375 V ~ 2.625 V
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: 576-1007 - BOARD EVAL EXPERIMENT KS8721BL
• Lead Free Status / RoHS Status: Not Compliant, Contains lead / RoHS non-compliant

KS8721BL/SL
Table Of Contents
M9999-051704
Pin Description ............................................................................................................................................................ 6
Strapping Option ......................................................................................................................................................... 9
Pin Configuration ...................................................................................................................................................... 10
Introduction
Register Map ........................................................................................................................................................... 18
100BASE-TX Transmit ........................................................................................................................................ 11
100BASE-TX Receive ......................................................................................................................................... 11
PLL Clock Synthesizer ......................................................................................................................................... 11
Scrambler/De-scrambler (100BASE-TX only) ..................................................................................................... 11
10BASE-T Transmit ............................................................................................................................................. 11
10BASE-T Receive .............................................................................................................................................. 11
SQE and Jabber Function (10BASE-T only) ....................................................................................................... 11
Auto-Negotiation .................................................................................................................................................. 11
MII Management Interface ................................................................................................................................... 12
MII Data Interface ................................................................................................................................................ 12
RMII (Reduced MII) Data Interface ..................................................................................................................... 13
RMII Signal Definition .......................................................................................................................................... 13
Reference Clock .................................................................................................................................................. 13
Carrier Sense/Receive Data Valid ....................................................................................................................... 13
Receive Data ....................................................................................................................................................... 13
Transmit Enable ................................................................................................................................................... 13
Transmit Data ...................................................................................................................................................... 14
Collision Detection ............................................................................................................................................... 14
RX_ER
RMII AC Characteristics ...................................................................................................................................... 14
Unused RMII Pins ................................................................................................................................................ 14
Auto-Crossover (Auto-MDI/MDI-X) ...................................................................................................................... 15
Power Management ............................................................................................................................................. 16
100BT FX Mode .................................................................................................................................................. 16
Media Converter Operation ................................................................................................................................. 16
Circuit Design Reference for Power Supply ........................................................................................................ 17
Register 0h: Basic Control .................................................................................................................................. 18
Register 1h: Basic Status ................................................................................................................................... 18
Register 2h: PHY Identifier 1 .............................................................................................................................. 19
Register 3h: PHY Identifier 2 .............................................................................................................................. 19
Register 4h: Auto-Negotiation Advertisement ..................................................................................................... 19
Register 5h: Auto-Negotiation Link Partner Ability .............................................................................................. 19
Register 6h: Auto-Negotiation Expansion ........................................................................................................... 20
Register 7h: Auto-Negotiation Next Page ........................................................................................................... 20
Register 8h: Link Partner Next Page Ability ........................................................................................................ 20
Transmit Clock ............................................................................................................................................. 12
Receive Clock .............................................................................................................................................. 12
Transmit Enable ........................................................................................................................................... 12
Receive Data Valid ...................................................................................................................................... 12
Error Signals ................................................................................................................................................ 12
Carrier Sense ............................................................................................................................................... 12
Collision ........................................................................................................................................................ 13
........................................................................................................................................................... 11
........................................................................................................................................................... 14
4
May 2004
Micrel