Renesas 72V70210DAG

Overview

72V70210DAG from Integrated Device Technology (IDT) is a 3.3 V, 1,024 × 1,024 non-blocking time slot interchange (TSI) digital switch IC for TDM voice and data applications. It supports 32 serial input/output streams at 2.048 Mb/s, offers per-channel variable or constant throughput delay modes, and features automatic ST-BUS®/GCI stream identification and JTAG test access.

For engineers reviewing the 72V70210DAG datasheet, 72V70210DAG pinout, 72V70210DAG application, or 72V70210DAG equivalent, key selection criteria include frame integrity support in constant-delay mode, low-latency switching in variable-delay mode, 5V-tolerant I/O with 3.3 V core operation, and direct microprocessor interface with one-cycle memory access.

Technical Context

The 72V70210DAG implements a dual-mode TSI architecture: Variable Delay Mode achieves minimum 3-time-slot latency for voice paths, while Constant Delay Mode guarantees fixed 1-frame (125 µs) throughput with up to 94-time-slot delay depending on channel mapping. Frame alignment evaluation via FE input enables per-stream input offset compensation up to +4.5 CLK cycles (±½-cycle resolution).

Its microprocessor interface uses a 12-bit address bus (A0–A11) and 16-bit bidirectional data bus (D0–D15), mapping directly to Data Memory, Connection Memory, and Control/Frame Alignment registers. Serial interface timing adapts automatically to ST-BUS® (falling-edge frame sync) or GCI (rising-edge frame sync) protocols using the F0i and FE pins.

Key Specifications

Pinout & Package

72V70210DAG is packaged in a 144-pin Thin Quad Flatpack (TQFP), order code DA144-1, with 0.50 mm pitch and 20 mm × 20 mm footprint. All I/O pins are 5 V tolerant except TMS, TDI, and TRST.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar time slot interchange applications.

Compared with IDT72V70208DAG and CY22394FXC, the 72V70210DAG delivers full telecom-scale non-blocking switching, hardware-accelerated frame alignment, and dual delay mode flexibility - making it the only option qualified for carrier-class E1 line cards and DCS nodes requiring deterministic latency or jitter control.

Availability

72V70210DAG is available at Aetrix Electronics and suitable for telecom infrastructure, industrial TDM backhaul, and multi-service access platforms requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 72V70210DAG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Integrated Device Technology (IDT) was a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions before its acquisition by Renesas in 2019.

The 72V70210DAG belongs to IDT's TSI Switch family, designed specifically for carrier-grade TDM switching in E1/T1 line cards, digital cross-connect systems, and voice/data convergence platforms.

FAQ

What is the maximum frame delay offset supported by the 72V70210DAG?

The 72V70210DAG supports per-stream input frame offset programming up to +4.5 clock cycles (CLK = 4.096 MHz), with ½-cycle resolution. This is implemented via the Frame Input Offset Registers (FOR0–FOR7), where each OFn[2:0] triplet defines the delay for RXn relative to F0i. The feature compensates for inter-stream skew in distributed backplane architectures without requiring external delay lines.

Does the 72V70210DAG support both ST-BUS® and GCI protocols simultaneously?

Yes - the 72V70210DAG automatically detects and adapts to either ST-BUS® or GCI framing on each RX stream independently, based on the edge relationship between F0i and FE inputs. It does not require mode configuration; detection occurs at power-up and persists unless reset. Both protocols operate at 2.048 Mb/s with identical data handling in Connection Memory.

How does the 72V70210DAG handle output driver control?

The 72V70210DAG provides hierarchical output control: the ODE pin acts as global enable for TX0–TX31, while individual OE bits in Connection Memory provide per-channel enable/disable. When ODE is LOW, all TX outputs go high-impedance regardless of OE bits. When ODE is HIGH, each TX output follows its corresponding OE bit. This allows safe power-up sequencing and selective channel muting.

Can the 72V70210DAG perform internal loopback on a per-channel basis?

Yes - setting the LPBK bit to '1' in any Connection Memory location routes TXn,m data internally to RXn,m, enabling per-channel diagnostic validation without external loopback hardware. For correct operation, associated frame delay offset registers (FORn) must be set to zero to avoid misalignment during loopback testing.

What microprocessor interface timing does the 72V70210DAG require?

The 72V70210DAG uses a standard asynchronous SRAM-like interface: CS, DS, and R/W control read/write cycles; address setup time is 15 ns, data hold time is 5 ns, and cycle time is 35 ns minimum. All accesses complete in one bus cycle - no wait states required - allowing direct connection to ARM9, MIPS, or SH-4 microprocessors without glue logic.