Renesas 72V73260DAG

Overview

72V73260DAG from Integrated Device Technology is a 3.3 V, 16,384 × 16,384 non-blocking time slot interchange (TSI) digital switch optimized for TDM voice and data applications. It supports 32 serial input/output streams at 32.768 Mb/s, offers per-channel variable or constant delay modes, and integrates JTAG test access and automatic ST-BUS®/GCI interface detection.

For engineers reviewing the 72V73260DAG datasheet, 72V73260DAG pinout, 72V73260DAG application, or 72V73260DAG equivalent, this device serves as a high-density TSI core in carrier-grade telephony systems, PCM multiplexers, and TDM cross-connect platforms requiring precise frame-aligned switching with sub-microsecond latency control and microprocessor-configurable path mapping.

Technical Context

The 72V73260DAG implements dual-path memory architecture: Data Memory stores incoming RX stream data synchronized to the 8 kHz F32i frame pulse, while Connection Memory holds per-output channel routing and mode configuration (Variable Delay, Constant Delay, Processor Mode, or high-Z). Its MOD1–MOD0 bits in Connection Memory directly select throughput behavior-enabling deterministic one-frame+channel delay (Constant) or minimal three-time-slot latency (Variable).

Frame alignment is actively managed via dedicated hardware: the Frame Evaluation (FE) input compares against F32i to measure inter-stream skew, and Frame Offset Registers (FOR0–FOR7) allow per-RX-stream programmable delay offsets up to +7.5 C32i clock cycles in 0.5-cycle resolution. Automatic ST-BUS®/GCI bus detection configures serial I/O timing polarity without external mode pins.

Key Specifications

Pinout & Package

72V73260DAG is packaged in a 144-pin Plastic Ball Grid Array (PBGA), 13 mm × 13 mm, 1.0 mm pitch (order code BB144-1). Pinout conforms to IDT's standard PBGA layout with dedicated RX/TX serial banks, 16-bit microprocessor bus (A0–A15, D0–D15), control signals (CS, R/W, DS, ODE, RESET), and JTAG port.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V73250DAG, the 72V73260DAG doubles serial I/O count and switch fabric size while retaining identical delay modes and microprocessor interface; versus PM73120, it trades protocol acceleration for smaller footprint and simpler integration in dedicated TSI-only designs.

Availability

72V73260DAG is available at Aetrix Electronics and suitable for PCM multiplexers, TDM cross-connect systems, voice gateways, and carrier-grade media gateways requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for telecom infrastructure programs.

Supply support for 72V73260DAG 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) is a fabless semiconductor company specializing in timing, RF, memory interface, and real-time interconnect solutions for communications, computing, and industrial markets.

The 72V73260DAG belongs to IDT's Time Slot Interchange (TSI) product line, engineered specifically for high-density, low-latency TDM switching in carrier-class telephony equipment where deterministic frame-aligned routing and robust manufacturability are essential.

FAQ

What is the maximum serial data rate supported by the 72V73260DAG?

The 72V73260DAG supports a maximum serial data rate of 32.768 Mb/s on each of its 32 RX and 32 TX streams. This rate corresponds to 512 time slots per 125 µs frame at 64 kbit/s per channel, enabling full E1/T1 aggregation and grooming. The C32i master clock must be precisely 32.768 MHz to maintain bit-synchronous operation across all streams.

How does the 72V73260DAG handle frame synchronization for ST-BUS® and GCI interfaces?

The 72V73260DAG automatically detects whether the incoming F32i frame pulse conforms to ST-BUS® (falling-edge aligned) or GCI (rising-edge aligned) specifications. Based on this detection, it configures internal serial I/O timing: ST-BUS® mode clocks data out on the falling edge and in on the next rising edge; GCI mode uses the opposite edge relationship. No external configuration is required.

Can the 72V73260DAG operate in both Variable and Constant Delay Modes simultaneously?

Yes - the 72V73260DAG supports per-channel delay mode selection via MOD1–MOD0 bits in Connection Memory. Each of the 16,384 output channels can be independently configured for Variable Delay (MOD=00), Constant Delay (MOD=01), Processor Mode (MOD=10), or high-impedance (MOD=11). This allows mixed-mode operation within a single device, such as low-latency voice paths alongside frame-integrity–critical signaling channels.

What is the purpose of the Frame Evaluation (FE) input on the 72V73260DAG?

The Frame Evaluation (FE) input on the 72V73260DAG is used to measure skew between the F32i frame pulse and an external system reference signal. When enabled via the Control Register, the device performs hardware-based comparison and stores the measured offset (up to 13 bits) in the Frame Alignment Register. This enables closed-loop calibration of input stream delays to ensure precise inter-stream alignment before switching.

Does the 72V73260DAG support JTAG boundary-scan testing?

Yes - the 72V73260DAG includes a fully compliant IEEE-1149.1 JTAG Test Access Port with TCK, TMS, TDI, TDO, and TRST pins. This enables boundary-scan testing of PCB interconnects, in-system programming of configuration registers, and visibility into internal scan chains during manufacturing and field diagnostics - critical for high-reliability telecom hardware validation.