6-54 Troubleshooting Waveforms: Bluetooth Troubleshooting Waveforms
These are the Bluetooth-related conducted signals that can be measured from test points on the expansion
board. (See “HLN5977A/ HLN5978B Expansion Board Layout – Side 2” on page 8-164 for measurement
locations):
Table 6-6. Bluetooth Test Points
TP TP Name Net Name Description Voltage Measured
4 TP2416 VBUS USB VBUS 5 4.96
5 TP2413 BT_AVR_RESET BT AVR Reset 1.85 1.73
9 TP2005 VCC_1.85 VCC 1.85 1.85 1.86
10 TP2417 USB_BOOT_1.8V USB Boot 1.8V 1.8 1.81
11 TP2466 ATMEL_BOOT_5 Atmel Boot 3.3 3.04
12 TP2010 GND Ground 0 –
13 TP2011 VCC_2.775 VCC 2.775 2.775 2.74
14 TP2414 USB1_DP USB+ 3.3 3.43
15 TP2415 USB1_DM USB- 3.3 3.47
16 TP2007 VSW_3.6 VSW 3.6 3.51 3.49
17 TP2405 GPS_BT_32KHZ 32 kHz clock 1.85 1.87
19 TP2401 GND Ground 0 –
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