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NXP Semiconductors AN11001, Application Note

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AN11001

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2011. All rights reserved.

Application note

Rev. 1 — 7 March 2011 

2 of 17

Contact information

For more information, please visit: 

http://www.nxp.com

For sales office addresses, please send an email to: 

[email protected]

NXP Semiconductors

AN11001

CBTL02042A switching application for mSATA, PCIe Mini-Card

 

Revision history

Rev

Date

Description

v.1

20110307

application note; initial release

Summary of Contents for AN11001

Page 1: ...ss Mini Card SATA SATA IO mSATA Abstract mSATA and PCI Express Mini Card are sharing the same physical connector type with minor pin definition modification Automatic card detection and signal multipl...

Page 2: ...1 7 March 2011 2 of 17 Contact information For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com NXP Semiconductors AN11001 CBTL0...

Page 3: ...h mSATA from SATA IO and Mini Card from PCI SIG share the same form factor and similar electrical pinout assignments on their connectors Mini Cards are PCI Express or PCIe based devices and PCIe inter...

Page 4: ...P25 B host receiver differential signal pair PERp0 P26 GND return current path GND P27 GND return current path GND P28 1 5 V 1 5 V source 1 5 V P29 GND return current path GND P30 Two Wire Interface...

Page 5: ...essor or CPU can utilize this information to enable either a SATA or a PCIe host controller on a notebook motherboard Figure 2 illustrates a typical block diagram of Mini Card mSATA sub system impleme...

Page 6: ...or similar to a card detect signal found in most card based sub systems Pin 21 is chosen such that this pin is grounded on the device side When there is no device inserted in the connector socket the...

Page 7: ...chip set to a Mini Card connector The PCIe interface is an x1 link and can be routed to different devices at varied locations of the board it is practical to route TX signals and RX signals of each l...

Page 8: ...ching for either transmit or receive pair occurs within the same layer It is also recommended to not to use vias whenever possible A maximum of four vias are allowed on the path inclusive of the thoug...

Page 9: ...1 inch 2 54 cm of PCB trace on FR4 material at frequency of 1 5 GHz At this frequency CBTL02042A exhibits signal loss of less than 1 dB or translating to 3 inches 7 62 cm to 4 inches 10 16 cm of PCB...

Page 10: ...re 7 however it is strongly suggested for a PCB designer to route the main route on the top layer as shown in Figure 6 by moving the second via which is close to the AC coupling capacitor to the break...

Page 11: ...pology a designer should pay special attention to the insertion loss caused by the multiplexers and adjust the trace length accordingly The SATA interface signals to Mini Card mSATA connector go throu...

Page 12: ...1_P A1_N n c SEL GND A2_P A2_N VDD GND A3_P A3_N GND n c XSD23 V DD GND B0_P B0_N B1_P B1_N C0_P C0_N C1_P C1_N VDD B2_P B2_N B3_P B3_N C2_P C2_N C3_P C3_N V DD XSD01 V DD GND CBTL04082A 10 nF A A B B...

Page 13: ...e configuration shown in Figure 10 keeps signals to the controllers and to the connectors on the opposite sides of the multiplexers and fits this layout profile perfectly When an mSATA device is not i...

Page 14: ...on the multiplexers as shown below 6 Conclusion mSATA and PCI Express Mini Card are sharing the same physical connector type with minor pin definition modification Automatic card detection and signal...

Page 15: ...application for mSATA PCIe Mini Card 7 Abbreviations Table 6 Abbreviations Acronym Description CPU Central Processing Unit ECN Engineering Change Notice EMI ElectroMagnetic Interference ESR Equivalen...

Page 16: ...orized or warranted to be suitable for use in life support life critical or safety critical systems or equipment nor in applications where failure or malfunction of an NXP Semiconductors product can r...

Page 17: ...escribed herein have been included in section Legal information 9 Contents 1 Introduction 3 2 Mini Card and mSATA applications 3 3 Switching circuit schematic 6 4 Mini Card mSATA routing guidelines su...

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