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Revision as of 13:30, 8 July 2011 by Andrey.filippov (talk | contribs) (J1 - to 10369 board)
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103695 - IMU Adapter Board


103695 is an adapter board used with the 10369 board to connect Analog Devices inertial measurement units (IMU) such as (ADIS-16375, ADIS-16405 and similar to the Elphel Model 353 camera.

Adapter uses two general purpose I/O of the camera FPGA, available on each of the 10369 USB/extension connectors J9..J11. The 103695 board provides 3.3V/5.0V power to the IMU (selectable by on-board resistors) and supports different speed SPI interface to the sensor unit. The device connector (J2) can accommodate a number of Analog Devices units, it should be possible to use the board with connector adapter with other SPI sensors.

Camera interface to the 103695 board is implemented in the FPGA (starting with firmware revision 8.1.0). Up 28 different 16-bit registers (plus 8 bytes of the timestamp with 1 microsecond resolution) are periodically addressed, read and stored in the camera system memory over the DMA channel. The logged register addresses are programmed at run time in the FPGA using the device driver.


J1 - to 10369 board

connector to the 10369 board
Pin Signal Notes
1 VP33IN +3.3V power input
2 MISO output to the FPGA (multiplexed data/ready from SPI)
3 NMISO composite input from the FPGA, source of SPI output signals
4 SDA i2c SDA
5 SCL i2c SCL
6 GND ground
7 VP5IN USB +5V power, not used
8 DM USB data - , not used
9 DP USB data + , not used
10 GND ground