GBCR

Introduction

The GigaBit Cable Receiver (GBCR) ASIC is designed as an equalizer chip to compensate the ITk pixel data transmission loss in the high frequency range after the twinax Type-1 data E-links at 1.28Gb/s.

There are ~4500 GBCR chips in the ITk Pixel system.

The TWiki page for GBCR: GBCR

The software link: GBCR3_SLAC

The GBCR Testing Github: GBCR-Testing

Performed QC Tests

1. EQ Amplitude Factors Test
2. Disable RX Channel Function Test
3. Retiming Mode Function Test
4. Retiming Mode & Voted Mode Correlation Test
5. RX 5 Channel Retiming Mode Test

Experiment Tips:

1. Be careful when plugging or unplugging MMCX cables. Try to hold the connector part firmly, otherwise the pins can easily become loose or detached.

2. When placing the ASIC, align the circular marking on the chip with the PIN1 position on the receiver board.

Recent Tasks