SCALEXIO Serial Interface Solution

Using Serial Peripheral Interface (SPI) and Inter-Integrated Circuit (I2C) bus

The SCALEXIO Serial Interface Solution lets you use the Serial Peripheral Interface (SPI) and Inter-Integrated Circuit (I2C) bus with a SCALEXIO system. The solution consists of an I/O solution base board equipped with specific I/O-hardware and software for parameterizing these interfaces with ConfigurationDesk.

The solution can be used with a SCALEXIO rack system, a SCALEXIO LabBox, a SCALEXIO AutoBox or an external I/O unit. The use of an external I/O unit makes it possible to reduce the distance to the device under test, which allows higher frequencies.

Technical Details

Feature	SPI	I²C
General	Software-adjustable signal voltage level (3.3 / 5 V) Communication with up to 20 MHz	Software-adjustable signal voltage level (3.3 / 5 V) Communication with up to 1 MHz (Fast-mode plus)
Master features	Up to 4 masters Adjustable timing for each chip select cycle Adjustable data format for each chip select cycle	Up to 5 master nodes Supports the following speed modes: Standard-mode, Fast-mode and Fast-mode plus 10 bit addressing possible
Slave features	Up to 12 slaves Adjustable cycle format and data bit width for each slave Star or daisy chain topology available	Up to 5 slave nodes Each physical slave node can have up to 16 logical slaves with different addresses For each slave up to 16 bytes can be received or send Clock stretching is possible
Internal communication interface	IOCNET	IOCNET
Typical power consumption	25 W	25 W

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