LAN8742-CZ-TR

LAN8742/LAN8742i Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology PRODUCT FEATURES Data Brief Highlights     Key Benefits Single-Chip Ethernet Physical Layer Transceiver (PHY) Cable diagnostic support Wake on LAN (WoL) support Comprehensive flexPWR® technology  — — — — — — — — — Flexible power management architecture — LVCMOS Variable I/O voltage range: +1.8 V to +3.3 V — Integrated 1.2 V regulator with disable feature   HP Auto-MDIX support Miniature 24-pin SQFN lead-free RoHS compliant package (4 x 4 x 0.9 mm height)                 Set-Top Boxes Networked Printers and Servers Test Instrumentation LAN on Motherboard Embedded Telecom Applications Video Record/Playback Systems Cable Modems/Routers DSL Modems/Routers Digital Video Recorders IP and Video Phones Wireless Access Points Digital Televisions Digital Media Adaptors/Servers Gaming Consoles POE Applications (Refer to SMSC Application Note 17.18) Compliant with IEEE 802.3/802.3u (Fast Ethernet) Compliant with ISO 802-3/IEEE 802.3 (10BASE-T) Loop-back modes Auto-negotiation Automatic polarity detection and correction Link status change wake-up detection Vendor specific register functions Supports the reduced pin count RMII interface Power and I/Os — — — — Target Applications  High-performance 10/100 Ethernet transceiver Various low power modes Integrated power-on reset circuit Two status LED outputs May be used with a single 3.3 V supply Additional Features — Ability to use a low cost 25 MHz crystal for reduced BOM  Packaging — 24-pin SQFN (4 x 4 mm) lead-free RoHS compliant package with RMII  Environmental — Commercial temperature range (0°C to +70°C) — Industrial temperature range (-40°C to +85°C) SMSC LAN8742/LAN8742i Revision 1.0 (05-07-12) PRODUCT PREVIEW Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology ORDER NUMBER(S): LAN8742-CZ (Tray) for 24-pin, SQFN lead-free RoHS compliant package (0°C to +70°C temp) LAN8742i-CZ (Tray) for 24-pin, SQFN lead-free RoHS compliant package (-40°C to +85°C temp) LAN8742-CZ-TR (Tape & Reel) for 24-pin, SQFN lead-free RoHS compliant package (0°C to +70°C temp) LAN8742i-CZ-TR (Tape & Reel) for 24-pin, SQFN lead-free RoHS compliant package (-40 to +85°C temp) This product meets the halogen maximum concentration values per IEC61249-2-21 For RoHS compliance and environmental information, please visit www.smsc.com/rohs Please contact your SMSC sales representative for additional documentation related to this product such as application notes, anomaly sheets, and design guidelines. Copyright © 2012 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. 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Revision 1.0 (05-07-12) 2 PRODUCT PREVIEW SMSC LAN8742/LAN8742i Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology General Description The LAN8742/LAN8742i is a low-power 10BASE-T/100BASE-TX physical layer (PHY) transceiver with variable I/O voltage that is compliant with the IEEE 802.3 and 802.3u standards. The LAN8742/LAN8742i supports communication with an Ethernet MAC via a standard RMII interface. It contains a full-duplex 10-BASE-T/100BASE-TX transceiver and supports 10 Mbps (10BASE-T) and 100 Mbps (100BASE-TX) operation. The LAN8742/LAN8742i implements auto-negotiation to automatically determine the best possible speed and duplex mode of operation. HP Auto-MDIX support allows the use of direct connect or cross-over LAN cables. Integrated Wake on LAN (WoL) support provides a mechanism to trigger an interrupt upon reception of a perfect DA, broadcast, magic packet, or wakeup frame. The LAN8742/LAN8742i supports both IEEE 802.3-2005 compliant and vendor-specific register functions. However, no register access is required for operation. The initial configuration may be selected via the configuration pins. Register-selectable configuration options may be used to further define the functionality of the transceiver. The LAN8742/LAN8742i can be programmed to support wake-on-LAN at the physical layer, allowing detection of configurable Wake-up Frame and Magic packets. This feature allows filtering of packets at the PHY layer, without requiring MAC intervention. Additionally, the LAN8742/LAN8742i supports cable diagnostics which allow the device to identify opens/shorts and their location on the cable via vendor-specific registers. Per IEEE 802.3-2005 standards, all digital interface pins are tolerant to 3.6 V. The device can be configured to operate on a single 3.3 V supply utilizing an integrated 3.3 V to 1.2 V linear regulator. The linear regulator may be optionally disabled, allowing usage of a high efficiency external regulator for lower system power dissipation. The LAN8742/LAN8742i is available in commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature range versions. A typical system application is shown in Figure 1. Figure 2 provides an internal block diagram of the device. 10/100 Ethernet MAC RMII LAN8742/ LAN8742i MDI Mode Transformer RJ45 LED Crystal or Clock Oscillator Figure 1 System Block Diagram SMSC LAN8742/LAN8742i 3 PRODUCT PREVIEW Revision 1.0 (05-07-12) Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology MODE[0:2] nRST Mode Control Reset Control AutoNegotiation 100M TX Logic 100M Transmitter HP Auto-MDIX RXP/RXN Transmitter SMI TXD[0:1] Management Control 10M TX Logic 10M Transmitter TXEN TXP/TXN MDIX Control XTAL1/CLKIN PLL RXER CRS_DV RMII Logic RXD[0:1] 100M RX Logic Clock Data Recovery Equalizer WoL MDC 10M RX Logic MDIO DSP System: Analog-toDigital 100M PLL Receiver Squeltch & Filters 10M PLL Interrupt Generator nINT/ REFCLKO LED1 LEDs Central Bias PHY Address Latches LAN8742/LAN8742i XTAL2 LED2 RBIAS PHYAD0 Figure 2 Architectural Overview Revision 1.0 (05-07-12) 4 PRODUCT PREVIEW SMSC LAN8742/LAN8742i Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology Package Outline Figure 3 24-SQFN Package Table 1 32-SQFN Dimensions MIN 0.80 0 3.90 2.40 0.35 0.18 0.25 A A1 D/E D2/E2 L b k e NOMINAL 0.90 0.02 4.00 2.50 0.40 0.25 0.35 0.50 BSC MAX 1.00 0.05 4.10 2.60 0.45 0.30 - REMARKS Overall Package Height Standoff X/Y Body Size X/Y Exposed Pad Size Terminal Length Terminal Width Pin to Exposed Pad Clearance Terminal Pitch Notes: 1. All dimensions are in millimeters unless otherwise noted. 2. 3. Dimension “b” applies to plated terminals and is measured between 0.15 and 0.30 mm from the terminal tip. The pin 1 identifier may vary, but is always located within the zone indicated. SMSC LAN8742/LAN8742i 5 PRODUCT PREVIEW Revision 1.0 (05-07-12) Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology Figure 4 Recommended PCB Land Pattern Figure 5 Taping Dimensions and Part Orientation Revision 1.0 (05-07-12) 6 PRODUCT PREVIEW SMSC LAN8742/LAN8742i Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology Figure 6 Reel Dimensions Figure 7 Tape Length and Part Quantity Note: Standard reel size is 4,000 pieces per reel. SMSC LAN8742/LAN8742i 7 PRODUCT PREVIEW Revision 1.0 (05-07-12)