ELSA Microlink ISDNTL V34 » History » Revision 4
Revision 3 (laforge, 12/10/2022 05:02 PM) → Revision 4/9 (laforge, 12/10/2022 05:04 PM)
h1. 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)| h2. 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 h3. 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_ attachment:HSCX.pdf * NEC D70236AGD-16 _V53A 16-bit microprocessor_ attachment:D70236AGD.pdf ** 29.4912 MHz XTAL * ST M28C64C-20K1 _64K x8 EEPROM_ attachment:M28C64C-STMicroelectronics.pdf * Siemens PSB 2110N ITAC V2.3 IOM-2 ** 10.75 MHz XTAL * NEC D72002-11 _Serial Communications Controller_ attachment:DSA2IH00126121.pdf * Sony K1202Q * AT29C020 Flash EEPROM ** dump: attachment:elsa_ml_isdn_tl_v34.bin h3. Daughterboard * Rockwell L39W/U L3903-53 * Rockwell RCV288DPi R6682-24 * UMC "UM61256FS-15" 32Kx8 CMOS SRAM attachment:DSA2IH00219003.pdf * 20.2752 MHz XTAL * 40.320 MHz XTAL * Siemens PSB2165N ARCOFI SP1.1 * Speaker * IS27C010 EEPROM ** image of v1.23: attachment:elsa_ml_336_pcqv_v1_23.bin h2. EEPROM images
