51
Figure 3-35 Connections between Cyclone V SoC FPGA and G-Sensor
Table 3-34 G-Sensor Pin Assignments
Signal Name
FPGA Pin No.
Description
I/O Standard
HPS_GSENSOR_INT
PIN_B22
HPS GSENSOR Interrupt Output
3.3V
HPS_I2C1_SCLK
PIN_E23
HPS I2C Clock (share bus with LTC)
3.3V
HPS_I2C1_SDAT
PIN_C24
HPS I2C Data (share bus)
3.3V
3
3
.
.
7
7
.
.
9
9
L
L
T
T
C
C
C
C
o
o
n
n
n
n
e
e
c
c
t
t
o
o
r
r
The board allows connection to interface card from Linear Technology. The interface is
implemented using a14-pin header that can be connected to a variety of demo boards from Linear
Technology. It will be connected to SPI Master and I2C ports of the HPS to allow bidirectional
communication with two types of protocols. The 14-pin header will allow for GPIO, SPI and I2C
extension for user purposes if the interfaces to Linear Technology board aren’t in use. Connections
between the LTC connector and the HPS are shown in
Figure 3-36,
and the functions of the 14 pins
is listed in
Table 3-25
.