Shiratech Solutions Spark-100, Integration Manual, Page: 27 / 41

27 | Spark-100 HW user manual v1.3
Figure 7– SPARK-100 DDR support
2.7 Interrupt & I/O Table
The following table describes the role of the various HSP IO used on the Spark:
Signal I/O Description Remarks
SD_MMC_SEL GPIO44
Select between eMMC on SOM and
uSD on carrier 0 – eMMC
1 - uSD
SD_PWR_EN GPIO37 Enable power to the carrier uSD card Active High
SD_CD# GPIO9(in) uSD card detect 0 – Card in
1 – No card
SD_WP# GPIO0(out) SD card write protect Active Low
GE Interrupt GPIO35(in) Giga Ethernet Interrupt from PHY Active Low
TEMP_ALM GPI3(in) Temperature Sensor Alarm Active Low
IO_INT GPI2(in) I2C expander interrupt Active Low
2.8 Temperature sensor
The Spark has a build in temperature sensor based on TI Digital Temperature Sensor TMP 108. The
device is controlled via I2C1 bus.
2.9 Pin assignment
The connector offers 314 pins which are used for:

Power

GPIOs
HPS
FPGA
DDR3
16 Bits
DDR3
16 Bits
DDR3
16 Bits ECC
DDR3
16 Bits (Optional)
Module Carrier
D[0..15]
D[16..31]
D[32..40]