Connect an OEM-IMU-EG320N or OEM-IMU-EG370N Directly to an OEM7 Receiver Card

The OEM-IMU-EG320N and OEM-IMU-EG370N can connect directly to SPI capable OEM7 receivers, such as the OEM7600, OEM7700 or OEM7720, using a SPI connection. The SPI connection handles timing and data communication between the receiver and IMU.

The interface to the OEM-IMU-EG320N or OEM-IMU-EG370N must provide:

• a Samtec CLM-110-02-H-D connector

  This connector mates with the connector on the OEM-IMU-EG320N or OEM-IMU-EG370N. See Figure: OEM-IMU-EG320N/OEM-IMU-EG370N Pin Locations for the location of the IMU connector and pins.

• a SPI port connection to the OEM7 receiver

  See Table: Receiver to OEM-IMU-EG320N/OEM-IMU-EG370N Pin Connections for the connections required between the IMU and receiver. For information about the receiver connector, see OEM7600 Interface Connector, OEM7700 Interface Connector or OEM7720 Interface Connector.

• a 3.3 VDC (±0.15 VDC) regulated power supply

  See Table: Receiver to OEM-IMU-EG320N/OEM-IMU-EG370N Pin Connections for the location of the power supply connections.

Pins not shown on the following table are not connected.

Receiver to OEM-IMU-EG320N/OEM-IMU-EG370N Pin Connections

EG320N/EG370N		Receiver
Pin	Pin Name	Pin	Pin Name	Description
1	SCLK	44	SPI_SCLK	SPI Serial Clock
2	SDO	43	SPI_MISO	SPI Data Output
3-4	GND	–	–	Digital ground
5	SDI	41	SPI_MOSI	SPI Data Input
6	CS	42	SPI_nCS	SPI Chip Select
7	SOUT	–	–	UART Data Out Connect to the 3.3 VDC power supply through a resistor (default 10 kΩ).
8	GND	–	–	Digital ground
9	SIN	–	–	UART Data In Connect to the 3.3 VDC power supply through a resistor (default 10 kΩ).
10-12	VCC	–	–	3.3 VDC power supply
13	DRDY(GPIO1)	29	EVENT_IN2	Data Ready
14	GPIO2(EXT)	26	EVENT_OUT2	External Trigger
15	GND	–	–	Digital ground
16	RST	–	–	Reset IMU RST must be high for the IMU to be active. To enable the IMU when the receiver is powered on, connect this pin to Pin 1 or Pin 2 of the receiver connector through a 10 kΩ resistor (recommended). Can also connect this pin to any stable 3.3 VDC power supply or output configuration to have more control over when IMU is enabled. When using this configuration note that: pin 16 must be pulled low for greater than 100 ms to properly soft-reset the IMU pin 16 has an internal 32-224 kΩ pull-up resistor

In the table above, the receiver pin numbers are for OEM7600, OEM7700 and OEM7720 receivers. For the location of the receiver card pins, refer to Technical Specifications.

For more information about the OEM-IMU-EG320N, see OEM-IMU-EG320N. For information about the OEM-IMU-EG370N, see OEM-IMU-EG370N.