HSZ Consulting Ltd

Micro-electronic specialists in mixed-signal design & high speed communications


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Andre Szczepanek

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Andre Szczepanek

After graduating with a 1st class honours degree in Electronics from UMIST in 1980, I joined Texas Instruments MOS design Centre in Bedford, UK. After digital design of a 99000 peripheral IC, I joined the TI-IBM Token-Ring development program in 1982 at its inception.  In co-ordination with IBM I developed the Token-Ring protocol State Machines and logic for the TI MAC chip (part of a 5-chip chipset), which I presented at ISSCC.

I then became the principal architect of TI’s networking products developing 2nd generation 2-chip Token-Ring chipsets, a combined Token-Ring and Ethernet chipset, a packet co-processor, TI’s ThunderLAN PCI Ethernet controller, and ThunderSWITCH Ethernet switch chips. I was elected a Texas Instruments Fellow in 1998.

From 1999 to 2009, I was the L2 communications and network IP expert within the TI ASIC division. This involved standards participation and custom IP design. I architected and implemented a number of  802.3ap Backplane Ethernet L2 IP modules to support TI SERDES in customer designs :  BASER-FEC, Backplane AN, & Backplane txeq training.

In 2010, I co-founded Inphi’s UK Design Centre. Between 2010 and 2017 I was the digital lead of seven significant 100Gb/s, NRZ CMOS gearbox/CDR products for Inphi, all of which are now in successful volume production. I also co-ordinated 25Gbps NRZ Serdes electrical interface standardisation activities for Inphi, initially at the OIF (CEI-25G-VSR), and then at P802.3 (CAUI-4).

I am a member of the IEEE, and have at various times attended  the  IEEE802.5 (Token-Ring), 802.1 (Bridging), 802.3 (Ethernet), and 802.12 (VG-AnyLAN) working groups, and the Optical Internetworking Forum (SPI-4/5, CEI-10/25G-VSR). I am currently the PAM4 electrical annex editor for P802.3bs (200/400GAUI-C2C & C2M).

I have been Granted 27 US Patents (15 as sole inventor, & 9 as first named inventor), I have 6 patents pending.


Patents and Papers

Technical Ladder Awards


Digital Consultant

Phone: +44-1604-289303


TMS380 (Eagle) 2nd generation Token-Ring MAC chip