Snowball board System
Architecture and Design
60
Figure 8.22 illustrates a picture of what the cable assembly looks like.
Figure 8.22. RS232 Cable
8.18. Indicators
There are four indicators on the Snowball board:
• Power LED
• User LED
• PM state LED
• Li-ion Charger Status LED
8.18.1. Power LED
The LD4 Green LED indicates that an ex5V DC Power Supply or a USB Host port is supplying
the board. Indicator LD4 does not indicate which power source is being used to supply the main power
to the Snowball board but only that it is active.
8.18.2. User LED
There is one user LED LD1 which can be driven directly from the GPIO_142 pin on the processor.
These can be used for any purpose by the software. The output level of the processor is 1.8V and the
current sink capability is not enough to drive an LED with any level of brightness. A transistor is used
to drive the LEDs from the VBAT rail. A logic level of 1 will turn the LD1 on.
8.18.3. PM LED
The PM LED LD3 is a right angle blue LED located on one side of the Snowball board. It is supplied
by VAUX2. VAUX2 is an LDO regulator used to provide 3.3V to the eMMC. This LED is used to
indicate if the AB8500 is ON or OFF.
Summary of Contents for SKY-S9500-ULP-CXX
Page 1: ...SKY S9500 ULP CXX aka Snowball PDK SDK Hardware Reference Manual Revision 1 0 July 1 2011...
Page 3: ...SKY S9500 ULP CXX aka Snowball PDK SDK 3...
Page 17: ...Snowball board Overview 8 Figure 4 2 Snowball board Usage Scenarios...
Page 89: ...Connnector Pinouts and Cables 80 Figure 9 17 Location of R77...
Page 92: ...Mechanical Information 83 Figure 11 2 Board Mechanical drawing...
Page 93: ...Troubleshooting 84 Chapter 12 Troubleshooting 12 1 TBD TBD...
Page 94: ...Known Issues 85 Chapter 13 Known Issues TBD...
Page 96: ...PCB Component Locations 87 Figure 14 2 Snowball board Bottom Side Components...
Page 97: ...Schematics 88 Chapter 15 Schematics Figure 15 1 AB8500 1 2...
Page 98: ...Schematics 89 Figure 15 2 AB8500 2 2...
Page 99: ...Schematics 90 Figure 15 3 Power circuitry and serial port...
Page 100: ...Schematics 91 Figure 15 4 AP9500 1 4...
Page 101: ...Schematics 92 Figure 15 5 AP9500 2 4...
Page 102: ...Schematics 93 Figure 15 6 AP9500 3 4...
Page 103: ...Schematics 94 Figure 15 7 AP9500 4 4...
Page 104: ...Schematics 95 Figure 15 8 Reset circuitry and Audio in out...
Page 105: ...Schematics 96 Figure 15 9 HMDI circuitry...
Page 106: ...Schematics 97 Figure 15 10 Sensors...
Page 107: ...Schematics 98 Figure 15 11 WLAN Bluetooth GPS...
Page 108: ...Schematics 99 Figure 15 12 eMMC and microSD...
Page 109: ...Schematics 100 Figure 15 13 Expansion connector...
Page 110: ...Schematics 101 Figure 15 14 Ethernet 10 100M...