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SMSC USB3503, Manual

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USB3503 Evaluation Board Manual

SMSC USB3503 EVB

9

Revision 1.0 (08-22-11)

USER MANUAL

 

4.3

  Quick Configuration and Customization

The USB3503 Evaluation program also contains some quick configuration and customization options
that automatically update the registers to match the desired configuration. The USB3503 can
enumerate as a Self Powered or Bus Powered Hub with 1, 2 or 3 downstream ports. The VID, PID,
DID and enumeration strings can also be customized to allow the USB3503 to enumerate with
whatever identification is desired.

To change these values; update the configuration section to the desired options, then press the

Configure

 button. The part will then reset, pull the CONNECT pin low and update the registers as

specified. To go with these options either raise the CONNECT pin, or press the 

Connect

 button.

Figure 4.4 Quick Configuration Options

Summary of Contents for USB3503

Page 1: ...le 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 docume...

Page 2: ...sic equipment necessary to evaluate the USB3503 The items included in the kit are 1 USB3503 EVB 2 5V DC Power Supply 3 Documentation and Software CD The kit does not include any downstream USB devices I2 C master hardware or other components for board customization 2 2 Initial Bring Up The USB3503 EVB has a default configuration that allows it to operate as a stand alone hub To begin connect the U...

Page 3: ... The label for the port is located near the receptacle The HSIC upstream port uses U FL connectors for Data and Strobe 3 2 Test Points Switches and LEDs There are multiple test points to confirm that the USB3503 EVB is powered properly TP1 and TP6 connect to GND TP2 connects to the VBAT pin and TP3 connects to the VDD_CORE_REG pin Figure 3 1 Block Diagram of the USB3503 EVB Figure 3 2 Upstream and...

Page 4: ...tions from Low 0V to High 1 25V These resistors are used for the REF_SEL pins Because these resistors and pads pull up to the 1 8V regulator any changes to these resistors will need to be done with the board unpowered The resistor pads are laid out in a manner that prevents the pull up resistors from being populated at the same time as the pull down resistors as shown in Figure 3 4 The following t...

Page 5: ...SB3503 can function with a single power supply to do this remove R8 and place a 0Ohm resistor on R9 This connects the VDD_CORE_REG pin to the VDD33_BYP pin allowing the USB3503 s internal 3 3V regulator to supply the VDD_CORE_REG voltage Below is a summary of the different power options and what resistors need to be populated to support these options INSTALL INSTALL EMPTY EMPTY 12 0 Figure 3 4 Con...

Page 6: ...are the locations of the resistors on the back side of the board INSTALL EMPTY INSTALL Onboard Regulator VDD33_BYP EMPTY EMPTY INSTALL External TP2 VDD33_BYP Figure 3 5 Regulator resistors Table 3 2 VBAT and VDD_CORE_REG source control R1 R8 R9 VBAT SOURCE VDD_CORE_REG SOURCE R1 R8 R5 R9 R35 ...

Page 7: ...run the executable and the Total Phase drivers to communicate with the Aardvark Once the software has been installed locate and run the USB3503 Evaluation exe program on the computer Connect the Aardvark to the USB3503 EVB with the red wire facing the power port as in Figure 4 1 The software allows the user to control the digital input pins RESET_N and CONNECT It also can monitor the INT_N pin for...

Page 8: ...the Digital Control Once the USB3503 has enumerated the serial interface registers should not be modified Notes To prevent the Aardvark from driving against another voltage the Aardvark is running in an Open Drain mode therefore it is important that all switches on the board pull the pins up to the Vcc value 4 2 I2C Communication The application also contains a general I2 C register read write sec...

Page 9: ... as a Self Powered or Bus Powered Hub with 1 2 or 3 downstream ports The VID PID DID and enumeration strings can also be customized to allow the USB3503 to enumerate with whatever identification is desired To change these values update the configuration section to the desired options then press the Configure button The part will then reset pull the CONNECT pin low and update the registers as speci...

Page 10: ...1 F BEAD L1 F BEAD LED2 GREEN LED2 GREEN 1 2 TP1 Black TP1 Black MOM ON SW1 MOM ON SW1 3 1 2 4 C19 1 0uF C19 1 0uF R35 ZERO R35 ZERO U3 USB3503_25WLCSP U3 USB3503_25WLCSP OCS_N B4 INT_N C5 PORT_PWR C4 SDA D5 REF_SEL1 D4 SCL E5 REF_SEL0 E4 RESET_N E3 VDD12_BYP D3 DATA E2 VSS C3 REFCLK B3 USBDN2_DM D2 USBDN3_DM D1 USBDN2_DP C2 STROBE E1 USBDN3_DP C1 USBDN1_DP A1 USBDN1_DM B1 VDD33_BYP A2 VDD33 A5 VB...

Page 11: ...CEPTACLE USB STYLE B RIGHT ANGLE 609 1045 ND FCI 87520 0010BLF Yes 19 1 P4 CONNECTOR RECEPT USB MINI AB 5POS RT ANG WM17122CT ND MOLEX 56579 0576 Yes P4 20 0 P5 CONNECTOR RECEPT MICRO USB TYPE AB SMT A97799CT ND TYCO ELECTRONICS 1981584 1 Yes P5 21 2 R1 R5 R8 R35 RESISTOR ZERO OHM 1 4W 5 1206 311 0 0ERCT ND YAGEO RC1206JR 070RL Yes R35 22 1 R2 RES 51 0K OHM 1 10W 1 0402 SMD P51 0KLCT ND Panasonic ...

Page 12: ...luation Board Manual SMSC USB3503 EVB 12 Revision 1 0 08 22 11 USER MANUAL 7 Revision History Table 7 1 Customer Revision History REVISION LEVEL DATE SECTION FIGURE ENTRY CORRECTION Rev 1 0 7 13 11 Initial Release ...

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