JADAK a business unit of Novanta Corporation SM-MN-SH ユーザーズマニュアル
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9.2
SPI
The M1-Mini allows the use of a standard Serial Peripheral Interface (SPI) for connecting to a host controller. The
M1-Mini must have the proper firmware to enable SPI operation. The M1-Mini operates as an SPI slave device; the
clock is always controlled by the host system. The SPI interface uses three wires: SCK, SDI, and SDO. SDO is the serial
data out (from the M1-Mini to the host system). SDI is the serial data in (to the M1-Mini from the host system). SCK
is the serial clock (controlled by the host system). The M1-Mini is set so that data is latched into and sent on the
positive edge of the SCK signal. Data is sent from the M1-Mini on the SDO signal at the same time that it is received by
the M1-Mini on the SDI signal. The data is sent and received MSB first. Data exchange between the host and the
M1-Mini is defined according to the SkyeTek Protocol, Binary mode.
NOTE
– Loop and Inventory modes are not supported for the SPI host interface.
Figure 6: SPI Connection: M1-Mini to Host
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In addition to the signal connections, the host must supply input voltage.
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Care should be taken to minimize signal length between the host and the module.