ELSA Microlink ISDN/TL V34¶

This is a rather high-end ISDN terminal adapter from 1995. It combines an ISDN terminal adapter with a built-in V.34 capable analog modem, so both ISDN data calls as well as analog modem calls are possible.

Hardware¶

• the bottom circuit hoststhe pure ISDN TA
• the daughterboard contains the V.34 analog modem using a Rockwell L39W/U + RCV288DPi chipset

Mainboard¶

• Siemens PSB 2186N V1.1 ISAC-S TE
  • 7.68 MHz XTAL
• Siemens SAB 82526N HSCX-1 V2.1 High-Level Serial Communications Controller Extended HSCX.pdf
• NEC D70236AGD-16 V53A 16-bit microprocessor D70236AGD.pdf
  • 29.4912 MHz XTAL
• ST M28C64C-20K1 64K x8 EEPROM M28C64C-STMicroelectronics.pdf
• Siemens PSB 2110N ITAC V2.3 IOM-2
  • 10.75 MHz XTAL
• NEC D72002-11 Serial Communications Controller DSA2IH00126121.pdf
• Sony K1202Q

Daughterboard¶

• Rockwell L39W/U L3903-53
• Rockwell RCV288DPi R6682-24
• UMC "UM61256FS-15" 32Kx8 CMOS SRAM DSA2IH00219003.pdf
• 20.2752 MHz XTAL
• 40.320 MHz XTAL
• Siemens PSB2165N ARCOFI SP1.1
• Speaker
• EEPROM

EEPROM images¶