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MDO-2000E series User Manual
126
SPI Serial Bus Interface
The serial peripheral interface (SPI) is a full duplex 4 wire
synchronous serial interface. The 4 signals lines: Serial clock line
(SCLK), slave select (SS), Master output/slave input (MOSI, or
SIMO) and the Master input/slave output (MISO, or SOMI). The
word size is configurable from 4 to 32 bits. The SPI triggers on the
data pattern at the start of each framing period. Note: The SPI bus
with analog source is only available for 4 channel models.
Panel operation
1. Connect each of the bus signals (SCLK, SS,
MOSI, MISO) to the oscilloscope’s 4 analog
channels or to one of the digital channels.
Connect the ground potential to one of the
probes’ ground clip if you are using the analog
channels or to the ground connector of the
Digital card if you are using the digital
channels.
SS
MOSI
MISO
GND
SCLK
X
10
X
1
G
1
2
3
4
X
10
X
1
X
10
X
1
X
10
X
1
Analog
Digital
2. Press the Bus key.
BUS
B
3. Press Bus from the bottom menu
and choose the SPI serial bus.
4. Press either Analog Source or Digital
Source to choose whether the
sources for the SPI bus are analog
or digital.
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