846 Fast Readout Image Sensor Prototype

846 : Fast Readout Image Sensor Prototype

Design render
  • Author: Devin Atkin
  • Description: This Project Pretends to be an Image Sensor, It's not an Image Sensor
  • GitHub repository
  • Clock: 50000 Hz

alt text

How it works

This project simulates an image sensor with the intention of validating a readout method. Light levels are fed in, and then the ouput is used to re-recover those light levels. This is done by using a set of frequency modules to convert the light levels into frequencies, and then a set of frequency counters to measure the frequency of the output. The design is validated through the testbenches both simulating a full 1MP sensor (These are run in the long testbenches action) and a smaller number of pixels in the actual manufactured hardware and shorter testbenches. I cannot unfortunately think of any way to make this design more useful to anyone else, but I wish anyone who tries the best of luck.

How to test

There are testbenches provided in this repository which should verify the functionaltiy of the design. The test directory also includes a top level testbench which can be used to verify the design once it is fabricated.

External hardware

The top level test under the test directory will have a circuit python equivalent written which will allow the design to be tested from the external RP2040 microcontroller. This will allow the design to be tested in the actual hardware as well as in simulation.

IO

#InputOutputBidirectional
0DATA_IN1DATA_BUS_COL_OUT[0]DATA_BUS_ROW_IN[0]
1RCLK_1DATA_BUS_COL_OUT[1]DATA_BUS_ROW_IN[1]
2LOAD_1DATA_BUS_COL_OUT[2]DATA_BUS_ROW_IN[2]
3DATA_IN2DATA_BUS_COL_OUT[3]DATA_BUS_ROW_IN[3]
4RCLK_2DATA_BUS_COL_OUT[4]DATA_BUS_ROW_IN[4]
5LOAD_2DATA_BUS_COL_OUT[5]DATA_BUS_ROW_IN[5]
6DATA_BUS_COL_OUT[6]DATA_BUS_ROW_IN[6]
7DATA_BUS_COL_OUT[7]DATA_BUS_ROW_IN[7]

Chip location

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(Latin_bomba) tt_um_chatgpt_rsnn_paolaunisa (ChatGPT designed Recurrent Spiking Neural Network) tt_um_bit_ctrl (Bit Control) tt_um_array_multiplier_hhrb98 (Array Multiplier) tt_um_wallace_hhrb98 (UACJ-Wallace multiplier) tt_um_I2C_to_SPI (TinyTapeout SPI Master) tt_um_rng (Random number generator) tt_um_wokwi_395599496098067457 (EVEN AND ODD COUNTERS) tt_um_8bitALU (8bit ALU) tt_um_aleena (Analog Sigmoid) tt_um_rejunity_1_58bit (Ternary 1.58-bit x 8-bit matrix multiplier) tt_um_rejunity_fp4_mul_i8 (FP4 x 8-bit matrix multiplier) tt_um_PWM_Controller (PWM Controller) tt_um_couchand_cora16 (CORA-16) tt_um_frq_divider (clk frequency divider controled by rom) tt_um_wokwi_390913889347409921 (Notre Dame Dorms LED) tt_um_timer_counter_UGM (4-Digit Scanning Digital Timer Counter) tt_um_koconnor_kstep (kstep) tt_um_lancemitrex (DIP Switch to HEX 7-segment Display) tt_um_PWM_Sine_UART (PWM_Sinewave_UART) tt_um_nicklausthompson_twi_monitor (TWI Monitor) tt_um_wokwi_395615790979120129 (Cambio de 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