DRM101 Datasheet, PDF (30/56 Pages) Freescale Semiconductor, Inc – Blood Pressure Monitor Using the Flexis QE128 Family

Hardware Description
Figure 3-4. Bottom Placement and Labeling
3.10.1.4 Labeling
All parts are outlined in the board, as well as the different supply and GND signals. Two LEDs indicate
the power status of the 3.3 V supply (digital, analog, and RF sections) and the 12 V supply (for the OLED
and the audio amplifier).
The figures in this chapter and Table 3-1 show the labeling of the supplies and the signals to which they
correspond:
Table 3-1. Signals
Name
3.3 V
3.3 V_D
3.3 V_Z
3.3 V_A
GND_D
GND_Z
GND_A
GND_M
Signal
General 3.3 V supply for the digital, RF, and analog blocks
Supply for the digital block (Flexis and JM60 MCUs)
Supply for the RF block
3.3 V supply for the analog blocks (instrumentation amplifier and MPR083 device)
Digital ground
RF ground
Analog ground
Motor block ground
Blood Pressure Monitor Design Reference Manual, Rev. 0
3-8
Freescale Semiconductor