Agere Systems L56xL (Luna)

Chipset data:

Agere Systems formerly Lucent Technologies, datasheet
ISA bus controllerless (HCF) modem
Linux support
The Luna56 modems are part of the Lucent "Apollo" family of controllerless modems.
Agere/Lucent has not released an official Linux driver for the Luna56 chipsets.
However, they do supply proprietary code in kit form to the volunteer developers.

Volunteer "Linmodem" project: LTModem Drivers for Linux
  L56DLI = DSP1641B + CSP1034AH (MQFP)                    (Desktop)
  L56DL  = DSP1641C + CSP1034AH (MQFP) [+ optional PNP1A] (Desktop)
  L56LLI = DSP1641B + CSP1034AH (TQFP)                    (Laptop)
  L56LL  = DSP1641C + CSP1034AH (TQFP) [+ optional PNP1A] (Laptop)

  1034AH   Line Codec               44-pin MQFP or 48-pin TQFP
  1641B    DSP Data/Fax/TAM/PnP     144-pin TQFP
  1641C    DSP Data/Fax/TAM         126-pin TQFP
  PNP1A                             100-pin MQFP
TFQP=Thin Quad Flat Package
DSP1641B package DSP1641C package 1034AH codec package 1034AH-J codec package
Typical application
PSB225 modem with L56xL chipset
Rob Clark