ST70134 - ST70135A ASCOT ADSL MODEM CHIP SET FOR CPE is an ADSL modem chip set produced by STMicroelectronics. It supports ANSI T1.413 ISSUE 1 & ISSUE 2, G.992.1 (FULL RATE) & G.992.2 (G. LITE) protocols, with data rates up to 8Mbps. It supports 255/128 carriers, has low power technology, a single power supply voltage of 3.3V, and a working temperature range of 0 to +70°C.
The ASCOT ADSL modem chip set combines the ST70134 analog front‑end IC and the ST70135A discrete multi‑tone modem IC to deliver a complete ATM‑based ADSL solution for customer‑premises equipment. It complies with ANSI T1.413, G.992.1 and G.992.2, supports data rates up to 8 Mbps downstream and 1 Mbps upstream, and includes built‑in ATM transport, Reed‑Solomon error correction, and trellis coding.
The document details the mechanical package outlines (TQFP64 for ST70134 and PQFP144 for ST70135A), power consumption (0.4 W typical, 0.1 W in power‑down), operating temperature range (0 °C to +70 °C), and performance tables for ANSI and ETSI loop conditions. It also describes the provided C++ driver, microcontroller interface, and software architecture for integration into real‑time operating systems.
| Downstream data rate | up to 8 Mbps |
|---|---|
| Upstream data rate | up to 1 Mbps |
| Power consumption | Low power technology: 1.3 W total |
| Operating temperature range | 0 °C to +70 °C |
| Package type (ST70134) | TQFP64 |
| Package type (ST70135A) | PQFP144 |
It supports up to 8 Mbps downstream and up to 1 Mbps upstream.
ST70134 is offered in a TQFP64 package and ST70135A in a PQFP144 package.
The chip set operates from 0 °C to +70 °C.
The chip set uses low‑power technology with a total consumption of about 1.3 W.