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Home > Services > Application Note

Fintek F81216 I/O chip Serial Port fix package

Internal No. A17011
Subject Fintek F81216 I/O chip Serial Port fix package
Description Fintek Super I/O chip --- F81216 have a Windows issue and Linux issue that fix it by driver and OEM BIOS. 1. Windows issue:  It will show “COM port detected a receive Over Run Error” anymore when you use multi COM port run loopback test at the same time by test software. 2. Linux issue:  It will fail when you run loopback test after S3/S4 wakeup.  The transmission will occur package loss under high speed.
Products APC-18W7 / APC-18W7 / APC-18W9 / APC-18W9 / APC-2132 / ARC-1033 / ARC-10W33 / ARC-1209 / ARC-1209-B ...
Release Date 2021/03/05
Category I/O Interface
Content

If the customers need to perform the serial port high speed transmission, please refer to the following. If you want to know more details, please contact your Sales or FAE.
 

  1. Fix Windows issue:
  • Install the super I/O patch driver, it can solve multi-Serial port testing at the same time without “COM port detected a receive Over Run Error” anymore.
 
  1. Fix Linux issue:
  • Submit a OEM BIOS request for support non-IRQ share:
  1. Set F81216 as ISA IRQ share mode (IRQ.5) & edge trigger mode (at APIC&IO-4D0) for Linux usage.
  2. Set F81216 UART IRQ as non-share for Linux OS.
  • If you encountered the failure results after you flashed the above BIOS, please contact your Sales & FAE and share the Linux OS type with kernel version, we will provide the patch driver.
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