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Renesas 7290820PQFG
- Part No.:
- 7290820PQFG
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 100-BQFP
- Datasheet:
-
7290820PQFG.pdf
- Description:
- IC MULTIPLEXER 1 X 16:16 100PQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,406
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Product details
Overview
IDT7290820PQFG from Integrated Device Technology, Inc. is a 5V, 2,048 × 2,048 non-blocking time slot interchange (TSI) digital switch optimized for ST-BUS®/GCI and wide frame pulse (WFP) telecommunication interfaces. It supports serial data rates of 2.048 Mb/s, 4.096 Mb/s, or 8.192 Mb/s with per-channel variable/constant throughput delay, IEEE-1149.1 JTAG test port, and 16 RX/TX serial streams - deployed in PCM channel switching for TDM-based voice and data concentrators.
For engineers reviewing the IDT7290820PQFG datasheet, IDT7290820PQFG pinout, IDT7290820PQFG application, or IDT7290820PQFG equivalent, key selection concerns include ST-BUS®/GCI auto-detection, per-stream frame offset calibration, microprocessor interface mode (Intel/Motorola multiplexed/non-multiplexed), 5V tolerance on all I/O pins, and PQFP-100 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The IDT7290820PQFG implements a dual-mode serial interface: ST-BUS®/GCI (with automatic polarity/frame format detection via F0i/FE/HCLK) and WFP mode (enabled by WFPS=HIGH, requiring 4.096 MHz HCLK). Its internal architecture includes parallelized serial-to-parallel converters, 8KHz frame-aligned data memory (up to 2,048 bytes), and connection memory with per-channel control bits (PC, V/C, LPBK, OE, CCO).
Switching is governed by connection memory mapping: in Connection Mode, source addresses (SAB/CAB) route input time-slots to outputs; in Processor Mode, microprocessor-written data is output directly on TX streams. Throughput delay is configurable per channel - variable delay (min. 3 time-slots) preserves voice latency, while constant delay (1-frame minimum) maintains frame integrity for concatenated data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Capacity | 2,048 × 2,048 channels @ 8.192 Mb/s; scales to 1,024 × 1,024 @ 4.096 Mb/s or 512 × 512 @ 2.048 Mb/s - defines maximum non-blocking TDM channel routing density. |
| Serial Data Rate | 2.048 / 4.096 / 8.192 Mb/s - selectable via DR0/DR1 bits; determines frame size (32/64/128 channels per 125 µs frame) and required CLK frequency (4.096 / 8.192 / 16.384 MHz). |
| Interface Compatibility | ST-BUS®/GCI auto-detection and WFP mode - eliminates external frame sync logic; FE/HCLK pin serves dual role as frame evaluator or 4.096 MHz clock input. |
| Microprocessor Interface | Intel/Motorola multiplexed or non-multiplexed bus support - configured via IM pin; AD0–AD7/D8–D15, A0–A7, CS, DS/RD, R/W/WR, AS/ALE, DTA enable glueless CPU integration. |
| JTAG Support | IEEE-1149.1 compliant test port (TCK, TMS, TDI, TDO, TRST) - enables boundary scan testing and in-system programming without dedicated debug hardware. |
| Operating Voltage | +5.0 V ±5% - powers all logic and I/O; all digital I/O pins are 5V tolerant, simplifying level-shifting in mixed-voltage systems. |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade telecom infrastructure including remote DSLAMs and base station controllers. |
Pinout & Package
Package: 100-pin Plastic Quad Flatpack (PQFP), 0.65 mm pitch, 14 mm × 20 mm footprint (order code PQF), lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RX0–RX15 | Serial input streams | 16 bidirectional-capable inputs accepting 2.048/4.096/8.192 Mb/s ST-BUS®/GCI or WFP-formatted data; 5V tolerant. |
| TX0–TX15 | Serial output streams | 16 three-state outputs; per-channel high-impedance control via ODE pin or OSB bit; output drivers enabled only when ODE=HIGH or OSB=HIGH. |
| F0i | Frame synchronization input | Accepts 8 kHz frame pulse; auto-detects ST-BUS® (falling-edge aligned) or GCI (rising-edge aligned) format when WFPS=LOW. |
| FE/HCLK | Frame evaluation or clock input | In ST-BUS®/GCI mode: measures input frame offset vs. F0i; in WFP mode: provides 4.096 MHz HCLK for frame alignment. |
| CLK | Master serial clock | Input clock at 4.096/8.192/16.384 MHz - must be exactly 2× selected serial data rate; drives all serial shift registers and timing units. |
| CCO | Connection control output | Serial output carrying CCO bits from connection memory - synchronous with TX streams; bit rate matches current serial data rate (4.096/8.192/16.384 Mb/s). |
| DTA | Data transfer acknowledge | Active-LOW open-drain signal indicating completion of microprocessor bus cycle; transitions HIGH then high-Z to enable fast bus turnaround. |
| ODE | Output drive enable | Global control for TX0–TX15 drivers: LOW forces all outputs into high-impedance state regardless of per-channel OE bits - critical for hot-swap and system-level power management. |
| IM | CPU interface mode select | Configures microport: LOW = Motorola non-multiplexed (A0–A7 + AD0–AD7/D8–D15); HIGH = multiplexed (AD0–AD7 shared with address). |
| RESET | Asynchronous device reset | Active-LOW Schmitt-trigger input; clears internal registers, counters, and sets TX outputs to high-Z - requires ≥100 ns pulse width for reliable initialization. |
Key Features
| Feature | Design Value |
|---|---|
| Per-stream frame offset calibration | Compensates for inter-stream skew up to +4.5 CLK periods (±0.5 CLK resolution) using FOR registers - essential for multi-chip TSI cascades with unequal PCB trace lengths. |
| Programmable per-channel throughput delay | V/C bit selects variable delay (min. 3 time-slots, optimal for voice) or constant delay (1-frame fixed, preserves frame alignment for data) - configurable independently per output channel. |
| Automatic ST-BUS®/GCI identification | Detects frame sync polarity and format on F0i without software intervention - reduces boot-time configuration overhead and eliminates external format-select jumpers. |
| Memory block programming | Loads identical upper 5 bits (BPD0–BPD4) into all connection memory locations in two frames - accelerates initialization of broadcast or multicast routing tables. |
| Internal per-channel loopback | LPBK bit routes TXn,Chm → RXn,Chm internally - enables real-time diagnostics without external cabling; requires zero frame offset for accurate timing alignment. |
Applications
| PCM Voice Concentrator | TDM Data Multiplexer |
|---|---|
Use Scenario: Aggregating 2,048 E1/T1 voice channels from remote access nodes into centralized switching fabric. IC Role / Device Role / Timing Role: Time-slot interchange switch performing non-blocking cross-connect between 16 RX and 16 TX ST-BUS® streams; maintains 125 µs frame boundaries and 8 kHz sample alignment. Use Value: Enables per-channel variable delay mode to minimize end-to-end voice latency (<100 µs), while supporting simultaneous 2.048 Mb/s and 4.096 Mb/s links via independent stream configuration. |
Use Scenario: Consolidating multiple 64 Kbit/s data channels (e.g., SCADA telemetry, POS transactions) onto high-speed backplane links. IC Role / Device Role / Timing Role: Digital switch operating in constant delay mode to preserve frame integrity across concatenated N×64 Kbit/s payloads; uses CCO pin to embed control metadata per time-slot. Use Value: Guarantees deterministic 1-frame (125 µs) throughput delay across all channels - prevents buffer overflow in downstream packetizers and ensures strict jitter compliance. |
| Multi-Standard Baseband Controller | Telecom Line Card Test Platform |
Use Scenario: Supporting mixed-mode operation in 3G/4G base station line cards handling both voice (GSM A-interface) and data (Iub/Iur) traffic. IC Role / Device Role / Timing Role: Configurable TSI switch adapting to ST-BUS® (GSM) and GCI (UMTS) frame formats via auto-detection; interfaces to dual-core DSP via multiplexed Motorola bus (IM=HIGH). Use Value: Eliminates need for separate format-specific switches; single hardware design supports legacy and next-gen air interfaces through register reconfiguration. |
Use Scenario: Automated functional test of TDM line cards using boundary-scan and real-time signal injection. IC Role / Device Role / Timing Role: JTAG-enabled TSI providing IEEE-1149.1 test access while simultaneously generating programmable test patterns on TX streams and validating RX responses via internal loopback. Use Value: Reduces test setup complexity by integrating pattern generation, response capture, and scan diagnostics in one IC - cuts test cycle time by >40% versus external signal sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar time slot interchange applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Renasas IDT7290810PQFG | Same 100-pin PQFP package and core architecture, but limited to 1,024 × 1,024 capacity at 4.096 Mb/s; lacks WFP mode and CCO output. | Suitable only for mid-scale voice concentrators without wide-frame or embedded control requirements. | Select when full 2,048 × 2,048 capacity, WFP support, or CCO metadata channel are unnecessary - reduces cost and power. |
| NXP TDA8035HN/C1 | 8-bit microcontroller with integrated TSI engine (512 × 512), no JTAG, single 2.048 Mb/s ST-BUS® interface, no per-channel delay control. | Targeted at low-cost, single-stream subscriber line interface cards (SLIC) with minimal routing flexibility. | Choose only for cost-sensitive, low-channel-count applications where programmability and multi-standard support are secondary to BOM reduction. |
Compared with IDT7290820PQFG, the IDT7290810PQFG offers reduced scale and feature set at lower cost, while the TDA8035HN/C1 integrates TSI into a microcontroller but sacrifices configurability, JTAG, and high-density switching - making IDT7290820PQFG the sole option for scalable, standards-flexible, and test-ready telecom switching.
Availability
IDT7290820PQFG is available at Aetrix Electronics and suitable for PCM voice concentrators, TDM data multiplexers, multi-standard baseband controllers, and telecom line card test platforms requiring stable component supply across extended product lifecycles.
Supply support for IDT7290820PQFG 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, Inc. (IDT) was a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions before its acquisition by Renesas Electronics in 2019.
The IDT7290820 belongs to IDT's legacy TSI digital switch family, designed specifically for carrier-grade TDM infrastructure requiring non-blocking, low-latency, and multi-standard frame alignment in voice/data convergence systems.
FAQ
What is the maximum serial data rate supported by the IDT7290820PQFG?
The IDT7290820PQFG supports a maximum serial data rate of 8.192 Mb/s, enabling 2,048 × 2,048 non-blocking channel switching in 128-channel-per-frame mode. At this rate, the required master clock (CLK) is 16.384 MHz, and the device operates with 16 RX and 16 TX streams. Lower rates - 4.096 Mb/s (1,024 × 1,024) and 2.048 Mb/s (512 × 512) - are also fully supported and selected via DR0/DR1 bits in the IMS register.
Does the IDT7290820PQFG support both ST-BUS® and GCI frame formats?
Yes, the IDT7290820PQFG automatically identifies and adapts to both ST-BUS® and GCI frame formats when the WFPS pin is LOW. It detects frame sync polarity by evaluating the rising or falling edge of the F0i input relative to the master clock (CLK), eliminating manual configuration. This capability is intrinsic to the IDT7290820PQFG's timing unit and requires no firmware intervention.
How does the IDT7290820PQFG handle frame alignment skew across multiple input streams?
The IDT7290820PQFG compensates for inter-stream frame skew using its frame input offset (FOR) registers. Each RX stream has an individually programmable offset value (±0.5 CLK resolution, up to +4.5 CLK periods), measured via the FE/HCLK pin in ST-BUS®/GCI mode. This allows precise alignment of asynchronous backplane inputs - a critical function for large-scale TSI systems where trace-length mismatches cause timing drift.
Can the IDT7290820PQFG operate with a Motorola non-multiplexed microprocessor bus?
Yes, the IDT7290820PQFG supports Motorola non-multiplexed bus operation when the IM pin is held LOW. In this mode, it uses separate A0–A7 address lines and AD0–AD7/D8–D15 data buses with control signals CS, DS, R/W, and DTA - requiring no address/data multiplexing logic. The IDT7290820PQFG's internal interface resolves signal naming differences (e.g., DS vs. RD), enabling direct connection to MC68K-family processors.
What is the purpose of the CCO pin on the IDT7290820PQFG?
The CCO (Connection Control Output) pin on the IDT7290820PQFG serially outputs the CCO bit from each location of the connection memory - one bit per time-slot, synchronized with the active TX streams. At 2.048 Mb/s, it delivers 512 bits/frame; at 4.096/8.192 Mb/s, it delivers 1,024/2,048 bits/frame. This enables embedded control signaling (e.g., channel status, encryption flags) alongside payload data without consuming additional time-slots.
7290820PQFG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 7200
- Package/Case:
- 100-BQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 1 x 16:16
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-PQFP (20x14)
7290820PQFG FAQ
1.How can I place an order for 7290820PQFG through Aetrix?
Please submit a Request for Quotation (RFQ) for 7290820PQFG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 7290820PQFG reliable?
The price and inventory of 7290820PQFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7290820PQFG is usually 5 days.
3.What payment methods are accepted for 7290820PQFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7290820PQFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7290820PQFG?
7290820PQFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7290820PQFG order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 7290820PQFG?
For technical support, including 7290820PQFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7290820PQFG requirements.
6.How does Aetrix verify that 7290820PQFG is sourced from the original manufacturer or authorized distributors?
All 7290820PQFG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 7290820PQFG meets industry standards.
7.What is the process for return or replacement of 7290820PQFG?
All 7290820PQFG units undergo pre-shipment inspection (PSI). If there is an issue with 7290820PQFG, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 7290820PQFG part is unused and in its original packaging.
Return procedure for 7290820PQFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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