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===== OVI40 Short Specification =====

==== OVI40-SDR Components ====

The OVI40-SDR consists of the following components:

  * UI Board
  * Display und Touchscreen Module
  * RF Board
  * Housing

==== UI Board ====

[{{:projekte:ovi40-sdr:led.jpg?400|OVI40 UI and display board (photo DF9EH)}}]

UI board table of features:

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|PCB Dimensions:  |186mm x 66mm  |
|Processor:  |STM32F76x (216 MHz Clock), \\ optional STM32H743ZIT6 (400 MHz Clock, pin compatible with STM32F76x)  |
|Audio Codec:  |2 x WM8731 @ 96KHz (UHSDR currently using 48 kHz only), separate IQ and Audio \\ (TX and RX possible simultaneously, RF board needs to support this)  |
|Display:  |3.5" 480×320 as default, 3.2" and 2.8" supported  |
|LCD Interface:  |parallel and SPI supported, parallel used as default|
|Internal memory:  |SPI-Flash (Option), SPI-RAM (Option)  |
|External memory:  |microSD card  |
|Realtime clock:  |integrated Realtime Clock (RTC) part of STM32 MCU, CR2032 Backup Battery  |
|LEDs:  |3  |
|External connections:|Mini-USB Type B, USB-Host (USB-A), \\ 3.5mm connector for microphone and PTT, 3.5mm connector for analog input, \\ 3.5mm connector for analog output (line-out is independant from loudspeaker), 3.5mm connector for headset  |
|Internal connections:|30pin connector (mcHF RF Board compatible), 6pin GPIO, 25pin connector (GPIOs, SPI, I2C), ST-Link V2 compatible Debug connector, Debug output, 2 x 4 Pin internal USB connections  |
|Keys:  |18 separate keys  |
|Rotary encoders:  |4 rotary encoders with integrated key function  |
|Audio output:  |Stereo, 2 x 3W at 2 x 4 Ohm with less than 1% THD+N  |

The 30pin header J1 is downward compatible with the [[http://www.m0nka.co.uk/|mcHF]] RF boards up to and including RF board V0.6. OVI40 UI and mcHF RF board can be used together. An improved OVI40 RF Board is in development.

==== Display Board ====

<bootnote>ToDo Photo</bootnote>

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|Display size:  |3.5 inch  |
|Display Type  |TN  |
|Resolution:  |480 x 320  |
|Controller:  |ILI9846 (and compatible)  |
|Human Interface:  |Touchscreen  |
|Interface:  |SPI and Parallel  |

2.8 inch oder 3.2 inch 320 x 240 Touchscreen Displays mit IL9325 (or compatible) controller can also be used.

==== RF Board ====

<bootnote>ToDo Photo and Data table</bootnote>

==== Housing ====

<bootnote>ToDo GHousing text and data</bootnote> OVI40 will not fit the current mcHF casings. In contrast to the mcHF, the OVI40 RF boards will have additional PCB boards plugged into them. It is assumed that these adapter boards may be up to 5 cm long. There will be OVI40 specific casings developped and provided who do not want to build their own housing. These housings will be developped after the OVI40 has been finished.