TUSB9261 DEMO Board Guide User's Guide Literature Number: SLLU139 February 2011
SLLU139 – February 2011 Submit Documentation Feedback © 2011, Texas Instruments Incorporated
1 2 3 4 5 6 1 7 8 9 1 2 3 10 11 1 2 12 ................................................................................. 5 Component Location ........................................................................................................... 6 12-V DC Jack ...................................................................................................................... 7 Cable Power vs. Self Power ..................................................................................................
www.ti.com List of Figures .................................................................................. 1 Figure 1. DEMO Board Block Diagram 2 Figure 2. Component Location ............................................................................................ 6 5 3 Windows Troubleshooting ................................................................................................ 15 4 Disk Management ...................................................................................
SLLU139 – February 2011 TUSB9261 DEMO Board Block Diagram Figure 1 represents the block diagram of the TUSB9261 DEMO Board. The board is designed to be powered from either a 12-V DC wall-wart (not supplied) or via USB cable power. TUSB9261 Figure 1. Figure 1.
SLLU139 – February 2011 Component Location Figure 2 shows the general location of major components on the TUSB9261 DEMO Board. TUSB9261 Figure 2. Figure 2.
SLLU139 – February 2011 12-V DC Jack The DEMO Board can operate from a standard DC jack for connecting an external 12-V wall-wart. The wall-wart should be rated for 12 V with at least a 2-A current rating. The tip of the DC jack has positive polarity. A wall-wart is not supplied with this reference design demonstration module, leaving it capable of bus power mode by default. In this mode, only Solid State Drives will work. If other higher current hard drives are to be used a wall-wart will have to be used.
SLLU139 – February 2011 Cable Power vs. Self Power The DEMO Board can be configured to operate off of cable power or use the 12-V wall-wart. To configure the board to use cable power jumper J4 must have a jumper placed across pins 1 and 2. When configured for cable power mode only 5-V and 3.3-V are available at the SATA connector. Therefore only SATA devices such as SSD drives may operate in this mode. For self power mode J4 must have a jumper placed across pins 2 and 3.
SLLU139 – February 2011 Power Switch The DEMO Baord uses a TI TPS2561 power switch. This switch serves two purposes. It limits the amount of in-rush current on VBUS and it allows power to the SATA connector to be switched via the TUSB9261. The switch is controlled via GPIO10 from the TUSB9261 and power faults can be monitored by GPIO11. By default the DEMO Board is configured to always apply power to the SATA connector and power faults are not monitored.
SLLU139 – February 2011 3.3-V and 1.1-V Regulator The DEMO Board utilizes a TI TPS650061 regulator to power the TUSB9261 and associated circuitry. 1 Push Button Reset Connected to the TPS650061 is a push button (SW2) that can be used to reset the TUSB9261 to its default state. When pressed the global reset terminal (GRST#) on the TUSB9261 will be driven low. 10 3.3-V and 1.
SLLU139 – February 2011 SPI The TUSB9261 supports a SPI interface connected to a SPI flash device. The flash device is used to hold the firmware for the TUSB9261. For normal SPI operation a jumper on J13 must be populated. For reprogramming of the SPI flash device it may be necessary to temporally remove J13. Refer to the TUSB9260 Flash Burner User Guide (SLLU125) for more information about programming the SPI flash.
SLLU139 – February 2011 Crystal or Oscillator Support The TUSB9261 DEMO can support either a crystal or oscillator reference clock. By default the board is configured to use a 25-MHz crystal. To use an oscillator R23 and R37 need to be populated with a 0-Ω resistor. C17 and C19 need to be de-populated. The crystal or oscillator should be rated for 1.8 V with PPM of ±100 or better. The frequency of the clock is configurable via resistors R10-R13.
SLLU139 – February 2011 GPIOs/LEDs/PBUTTON 1 GPIO LEDs Each GPIO is connected to an LED on the DEMO Board. The LEDs are located along the top side of the board (D1 – D8). The LEDs are for test purposes and can be used to indicate device operational states. This is firmware dependent. 2 PWM LEDs Each PWM is connected to an LED (D3 and D6) on the DEMO Board. PWM LEDs are for test purposes and can be used to indicate hard drive activity or USB activity. This is firmware dependent.
SLLU139 – February 2011 Default GPIO/PWM Configures States Table 2 shows the factory default programmed settings for the GPIO and PWM terminals used on the PDK. Table 2. Table 2. GPIO and PWM Factory Default Settings GPIO LED NO.
SLLU139 – February 2011 Troubleshooting Tips for Windows If the hard drive can be seen in Device Manager but does not show up in Windows Explorer (as seen below) you may need to partition and format the hard drive. This is typical of a new or corrupted hard drive. Figure 3.
Step 1 1 www.ti.com Step 1 In the Control Panel, open Administrative Tools → Computer Management. Under Storage, click on Disk Management. Figure 4. Disk Management 2 Step 2 If you can see the unallocated disk, right click and select New Partition. Follow the Wizard to create a Primary Partition. Make sure to select the “Perform Quick Format” check box. Figure 5.
Step 2 www.ti.com Once the disk is properly partitioned and formatted, it will appear as Healthy. Figure 6. Healthy Disk Status It will then appear as a drive in Windows Explorer. Figure 7.
SLLU139 – February 2011 TUSB9261 DEMO Board Schematic See following pages.
www.ti.com 5 4 3 2 1 BOARD_12V R41 10 R42 10 FUSE_12V + C10 220uF + C12 220uF GND A+ AGND BB+ GND S1 S2 S3 S4 S5 S6 S7 C1 CAP_SATATXM CAP_SATATXP CAP_SATARXM CAP_SATARXP 0.01uF C2 0.01uF C6 0.01uF C7 0.01uF 1. MATCH TO WITHIN 2.5MILS 2. 100-ohms DIFFERENTIAL IMPEDANCE 3.
www.ti.com 5 4 3 2 1 5V REGULATOR REG_5V BOARD_12V L1 15uH C21 220uF C22 0.01uF D12 MBRS540T3 C23 TUSB9261 DECOUPLING 0.01uF NOTE: USE LOW ESR CAP D D J3 TPS5450 R27 3.16K 1% PH VIN GND ENA 8 7 6 5 2 3 1 PH NOTE: USE LOW ESR CAP C29 9 VSENSE BOOT NC NC_ VSENSE T 1 2 3 4 BOOT GND U3 R26 10K 1% S + BOARD_3P3V 2.1mm x 5.5mm VDD_3P3V 0.01uF FB1 + C30 1000uF 220 @ 100MHZ C24 22uF C25 C26 C27 C28 1uF 0.1uF 0.1uF 0.1uF VDDA_3P3V FB2 C31 220 @ 100MHZ 0.
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