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KSZ8841-32MQL Datasheet(PDF) 1 Page - Micrel Semiconductor |
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KSZ8841-32MQL Datasheet(HTML) 1 Page - Micrel Semiconductor |
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1 / 105 page  KSZ8841-16/32MQL/MVL/MVLI/MBL Single-Port Ethernet MAC Controller with Non-PCI Interface Rev. 1.6 LinkMD is a registered trademark of Micrel, Inc. Magic Packet is a trademark of Advanced Micro Devices, Inc. Product names used in this datasheet are for identification purposes only and may be trademarks of their respective companies. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( 408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com October 2007 M9999-102207-1.6 General Description The KSZ8841-series single-port chip includes PCI and non-PCI CPU interfaces, and are available in 8/16-bit and 32-bit bus designs. This datasheet describes the KSZ8841M-series of non-PCI CPU interface chips. For information on the KSZ8841 PCI CPU interface chips, refer to the KSZ8841P datasheet. The KSZ8841M is a single chip, mixed analog/digital device offering Wake-on-LAN technology for effectively addressing Fast Ethernet applications. It consists of a Fast Ethernet MAC controller, an 8-bit, 16-bit, and 32-bit generic host processor interface and incorporates a unique dynamic memory pointer with 4-byte buffer boundary and a fully utilizable 8KB for both TX and RX directions in host buffer interface. The KSZ8841M is designed to be fully compliant with the appropriate IEEE 802.3 standards. An industrial temperature-grade version of the KSZ8841M, the KSZ8841MVLI, also can be ordered (see “Ordering Information section). LinkMD ® Physical signal transmission and reception are enhanced through the use of analog circuitry, making the design more efficient and allowing for lower-power consumption. The KSZ8841M is designed using a low-power CMOS process that features a single 3.3V power supply with 5V tolerant I/O. It has an extensive feature set that offers management information base (MIB) counters and CPU control/data interfaces. The KSZ8841M includes a unique cable diagnostics feature called LinkMD ®. This feature determines the length of the cabling plant and also ascertains if there is an open or short condition in the cable. Accompanying software enables the cable length and cable conditions to be conveniently displayed. In addition, the KSZ8841M supports Hewlett Packard (HP) Auto-MDIX thereby eliminating the need to differentiate between straight or crossover cables in applications. Functional Diagram P1 H P A u t o M D I/M D I - X Ho s t M A C 10/ 10 0 Ba s e - T / T X PH Y EE PR O M In te r f a c e LE D Dr i v e r MI B Co u n t e r s P 1 LE D [ 3 : 0] EE PR O M I / F No n - P C I CP U Bu s In te r f a c e Un i t E m be dd ed P r o c e s s o r In te r f a c e QM U DM A C h an ne l Co n t r o l R e gi s t er s 8 , 16 , or 3 2 - b i t G e ne r i c H o s t In te r f a c e RX Q 4K B TX Q 4K B Figure 1. KSZ8841M Functional Diagram |
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