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laforge, 12/10/2022 05:04 PM
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.
Supply Voltage | 9V AC |
Power Consumption | ? |
RS232 Connector | DB25 |
Line Connector | RJ-11 (unusual for ISDN) |
Hardware¶
The hardware design is a two-layer circhit board design:- 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
- AT29C020 Flash EEPROM
- dump: elsa_ml_isdn_tl_v34.bin
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
- IS27C010 EEPROM
- image of v1.23: elsa_ml_336_pcqv_v1_23.bin
EEPROM images¶
Updated by laforge over 1 year ago · 5 revisions