GW Instek GDS-3000 Series DS3-SBD Serial Bus decode - Manual (Page 26)

GDS-3000 Serial Decode User Manual
26
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 8, 16 or 32 bits. The SPI triggers on
the data pattern at the start of each framing period. This bus is only
available on 4 channel models.
Panel operation 1. Insert each of the bus signals (SCLK, SS, MOSI,
MISO) to one of the oscilloscope channels.
2. Choose Bus 1 or Bus 2 by pressing
the corresponding bus key, B1 or
B2.
Note  The SPI bus decoding function is only available
on 4 channel DSO models.
3. Press Bus from the bottom menu
and choose the SPI serial bus.
Define Inputs 1. Press Define Inputs from the lower
menu.
2. From the side menu choose the
SCLK, SS, MOSI and MISO inputs.
SCLK CH1~4
SS CH1~4