XR22414CV48EVB MaxLinear

LED XR22414-EVB Evaluation Board Users Manual Introduction The XR22414 evaluation board is for the Exar USB 2.0 4-Port hub in both the 48 pin LQFP and 48 pin QFN packages. This manual is intended to guide users to use various functions and configurations of the hub device. Either the 48 pin LQFP package or 48 pin QFN package EVB can be ordered as shown in Table 1. Table 1: Ordering Information Device Ordering Part Number Evaluation Board Ordering Part Number Device Package Device Location XR22414CV48-F XR22414CV48EVB LQFP 48 U1 XR22414CL48-F XR22414CL48EVB QFN 48 U2 Board Layout and Outline Evaluation Board outline Figure 1 shows the topography of the evaluation board. Either U1 or U2 will be installed depending upon the version of the evaluation board. DS Port DS Port DS Port DS Port 1 2 3 4 LED LED LED LED CAP CAP CAP CAP P P P P T T T T LED LED LED LED C C JUMP C JUMP C JUMP JUMP C C C C U M M M M S B U1 U2 24 12 J8 QFN LQFP 48 JUMP 48 1 48 J8: 1-2 Self Power PWR 2-3 Bus Power Figure 1: XR22414 PCB Outline 2017 Exar Corporation 1 / 8 www.exar.com XR22414 Rev 1AXR22414 EVB Users Manual Evaluation Board Layout Evaluation Board Picture Figure 2: XR22414 PCB Hardware Configuration This section describes the default board settings, when shipped from the factory, and jumper settings that may be used to reconfigure operation. Differences between XR22414CV48EVB and XR22414CL48EVB The XR22414 is available in two packages, a 48 pin LQFP and a 48 pin QFN. The two versions of the evaluation board use the same bare PCB, but with different components assembled, which includes either the LQFP or QFN package. In order to avoid trace stubs on high speed USB (480 MHz) nets, 0 ohm resistors are installed from the upstream and all four down- 2017 Exar Corporation 2 / 8 www.exar.com XR22414 Rev 1A