DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
DSB75_hd_v12
Page 69 of 96
2008-08-26
Figure 42: GPIO signal indication circuit
4.3
Indication of Power
There are two power control LEDs on the DSB75.
The green power control LED V431 is connected to the DSB75 supply voltage 3V0 which is
always available when the DSB75 receives an input voltage.
The yellow power control LED V430 is driven from the supply voltage VDD that is only active
if a module is connected and turned on.
4.4
Indication of I²C Lines
The LED V503 indicates that I2CCLK line is active (low).
The LED V504 indicates that I2CDAT line is active (low).
For detailed information see Figure 23.
