Altera DE1-SoC - DE1-SoC G-sensor (ADXL345)

DE1-SoC User Manual
50
www.terasic.com
March 14, 2014
Figure 3-34 Connections between the HPS and USB OTG PHY
Table 3-29 Pin Assignment of USB OTG PHY
Signal Name
FPGA Pin No.
Description
I/O Standard
HPS_USB_CLKOUT
PIN_N16
60MHz Reference Clock Output
3.3V
HPS_USB_DATA[0]
PIN_E16
HPS USB_DATA[0]
3.3V
HPS_USB_DATA[1]
PIN_G16
HPS USB_DATA[1]
3.3V
HPS_USB_DATA[2]
PIN_D16
HPS USB_DATA[2]
3.3V
HPS_USB_DATA[3]
PIN_D14
HPS USB_DATA[3]
3.3V
HPS_USB_DATA[4]
PIN_A15
HPS USB_DATA[4]
3.3V
HPS_USB_DATA[5]
PIN_C14
HPS USB_DATA[5]
3.3V
HPS_USB_DATA[6]
PIN_D15
HPS USB_DATA[6]
3.3V
HPS_USB_DATA[7]
PIN_M17
HPS USB_DATA[7]
3.3V
HPS_USB_DIR
PIN_E14
Direction of the Data Bus
3.3V
HPS_USB_NXT
PIN_A14
Throttle the Data
3.3V
HPS_USB_RESET
PIN_G17
HPS USB PHY Reset
3.3V
HPS_USB_STP
PIN_C15
Stop Data Stream on the Bus
3.3V
3
3
.
.
7
7
.
.
7
7
G
G
-
-
s
s
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e
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r
r
The board comes with a digital accelerometer sensor module (ADXL345), commonly known as
G-sensor. This G-sensor is a small, thin, ultralow power assumption 3-axis accelerometer with
high-resolution measurement. Digitalized output is formatted as 16-bit in two’s complement and
can be accessed through I2C interface. The I2C address of G-sensor is 0xA6/0xA7. More
information about this chip can be found in its datasheet, which is available on manufacturer’s
website or in the directory \Datasheet folder of DE1-SoC system CD. Figure 3-35 shows the
connections between the HPS and G-sensor. Table 3-30 lists the pin assignment of G-senor to the
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