Locating Signals
Noisy Sine
Board label.
NOISY_SINE
Connector grid location.
B7
Description.
The Noisy Sine signal is an audio frequency (1.25 kHz) sine wave with power supply switching noise style spikes
(156 kHz), and very high frequency noise (20 MHz pseudorandom) caused by a micro-controller/DSP system.
I
2
C Bus
Board label.
I2C_CLK, I2C_DATA
Connector grid location.
A2, G1
Description.
These are the I
2
C (Inter-IC Communication) bus signals between the
μ
C and a serial EEPROM.
There are several different types of data packets.
The clock rate is a 100 kHz, 0 to 5 volt signal.
SPI Bus
Board label.
SPI_SCLK, SPI_SS, SPI_MOSI
Connector grid location.
F1, G1, G2, H1
Description.
These are the SPI (Serial Peripheral Interface) serial bus signals. (See Figure 2.)
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Demo 2 Board Instruction Manual
Summary of Contents for DPO2000 Series
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