Shiratech Solutions Spark-100, Integration Manual, Page: 7 / 41

7 | Spark-100 HW user manual v1.3
Figure 2 – SOM internal power scheme
The SOM uses both fixed and configurable power converters for powering the HPS and FPGA IO banks.
The following table describes the power levels of available for each I/O bank:
FPGA IO banks:
FPGA bank Number of I/O Voltage supported Remarks
Bank 3A 16 1.8V or 3.3V The default configuration 1.8V.
For other options contact
sales@shiratech.com
Bank 3B 32 1.5V, 1.8V, 2.5V, 3.3V The selection is done by hardware
and cannot be changed during
operation.
Bank 4A 68 1.5V, 1.8V, 2.5V, 3.3V The selection is done by hardware
and cannot be changed during
operation.
Bank 5A 16 1.8V Fix
Bank 5B 7 3.3V Fix
Bank 8A 6 1.8V Fix
HPS IO banks:
HPS bank Voltage supported Remarks
Bank 6 1.5v Internal bank for DDR
7A 1.8V Various interfaces,
7B, 7C 3.3V Various interfaces, like SD and USB
2.1.3 Bank 3B and 4A - Programmable Power levels
The power of banks 3B and 4A can be programmed according to the design requirements. Each bank in
the FPGA has a VCCPD and a VCCIO that control the banks power level. Banks 3B and 4A share a single