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KSZ8721SL 数据手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
接口芯片
封装:
SSOP-48
描述:
MICROCHIP KSZ8721SL 以太网控制器, 100 Mbps, IEEE 802.3, IEEE 802.3u, 2.97 V, 3.63 V, SSOP, 48 引脚
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KSZ8721SL数据手册
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KS8721BL/SL Micrel
M9999-051704 4 May 2004
Table Of Contents
Pin Description ............................................................................................................................................................ 6
Strapping Option......................................................................................................................................................... 9
Pin Configuration...................................................................................................................................................... 10
Introduction ........................................................................................................................................................... 11
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
Transmit Clock............................................................................................................................................. 12
Receive Clock .............................................................................................................................................. 12
Transmit Enable........................................................................................................................................... 12
Receive Data Valid ...................................................................................................................................... 12
Error Signals ................................................................................................................................................ 12
Carrier Sense............................................................................................................................................... 12
Collision........................................................................................................................................................ 13
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 ........................................................................................................................................................... 14
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 Map ........................................................................................................................................................... 18
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
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