DS320PR1601: REDRIVER

Hi Shekha,

See the figure on page 22 of the DS320PR1601 datasheet.

Each PD pin sets control for a bank of 8 lanes (4 from Side A and 4 from Side B) to provide flexibility for x4 and x8 bifurcation:

• PD_15-12: channels x15-12, both Side A and B

• PD_11-8: channels x11-8, both Side A and B

• PD_7-4: channels x7-4, both Side A and B

• PD_3-0: channels x3-0, both Side A and B

For x2 see https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1328505/faq-ds320pr1601-receiver-detect-reset-for-x2-ssd-hot-plug-applications/

It is possible to control the PD pins on a per channel basis with RX detect reset. Let me know if you have further questions.

Best,

Nick