Shiratech Solutions Spark-100, Integration Manual, Page: 17 / 41

17 | Spark-100 HW user manual v1.3
Note: In some cases the SW handler will see the address space as a 7 bits range and so the address has
to shift right one bit to match.
2.3.7 SPI
The SPARK-100 supports up to two SPI interfaces. Each port offers:

Single CS signal for each SPI interface.

Programmable master serial bit rate up to 50 MHZ.

Serial master

Programmable data item size of 4 to 16 bits
Note – When the SPI interfaces are not in use, the pins can be configured as a GPIOs.
2.3.8 JTAG
The SPARK-100 integrates an optional on board 10 pins JTAG connector. The JTAG signals are also
connected to the SMARC connector, an analog switch selects between the JTAG connector and the
SMARC connector. The selection is done by a switch located on the SOM (SW3).
Ref. Chip I2C Port Address A Port Address B Description
Ux PCA9548 0 1 1 1 0 0 0 0 RW I2C Interface Expander
SMARC 0 1 1 1 0 0 0 0 RW 0 X X X X X X X RW I2C_CAM
0 1 1 1 0 0 0 0 RW 1 X X X X X X X RW I2C_GP
0 1 1 1 0 0 0 0 RW 2 X X X X X X X RW I2C_PM
0 1 1 1 0 0 0 0 RW 3 X X X X X X X RW I2C_LCD
Ux TCA6416A 1 0 1 0 0 0 0 0 RW 20 H I2C I/O Expander
Ux Temp Sens 1 1 0 0 1 0 0 0 RW 48 H Temperature Sensor
Ux CLK_Gen 1 1 0 1 0 1 0 0 RW 54 H Clock Generator
Ux EEPROM 1 1 0 1 0 0 0 0 RW 50 H EEPROM