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Renesas 82V2108PX8
- Part No.:
- 82V2108PX8
- Manufacturer:
- Renesas
- Category:
- Telecom
- Package:
- 128-BFQFP
- Datasheet:
-
82V2108PX8.pdf
- Description:
- IC TELECOM INTERFACE 128QFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,486
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Product details
Overview
82V2108PX8 from Integrated Device Technology is an octal T1/E1/J1 framer IC designed for telecom line interface systems. It supports eight independent E1, T1, or J1 channels with full frame processing, HDLC/Bit-oriented messaging, PRBS testing, and jitter attenuation. Key confirmed parameters include 8-channel framing, 2.048 MHz (E1) / 1.544 MHz (T1/J1) line rates, 128-pin PQFP package, and compliance with ITU-T G.704, G.706, G.775, and ANSI T1.107 standards. It is deployed in multi-service access platforms and channelized edge routers.
For engineers reviewing the 82V2108PX8 datasheet, 82V2108PX8 pinout, 82V2108PX8 application, or 82V2108PX8 equivalent, this page delivers verified functional architecture, exact pin mapping for the 128-pin PQFP variant, real-world timing and alarm handling behavior, and two validated alternative framers for migration or second-sourcing in carrier-grade TDM infrastructure.
Technical Context
The 82V2108PX8 integrates eight independent framer channels with dual-mode operation-each configurable for E1 (32 time slots), T1 (24 time slots), or J1 (24 time slots). It implements full-frame synchronization search, CAS/RBS signaling extraction, and HDLC receiver/transmitter logic per channel.
Its architecture includes dedicated performance monitors, alarm detectors (AIS, RED), elastic store buffers with ±125 ppm clock tolerance, and integrated jitter attenuators meeting ITU-T G.823/G.824 transfer and tolerance requirements. All channels share a common system interface with programmable clock master/slave modes and multiplexed data buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 8 independent T1/E1/J1 framers, each fully configurable without shared resource contention |
| Line Rate Support | E1: 2.048 Mbps; T1/J1: 1.544 Mbps - hardware-synchronized to incoming line clock |
| Standards Compliance | ITU-T G.704, G.706, G.775; ANSI T1.107, T1.403, T1.408 - enables drop-in deployment in certified telco gear |
| Jitter Attenuation | Integrated RJAT/TJAT blocks meeting G.823 mask for E1 and G.824 for T1 - eliminates need for external jitter cleaners |
| HDLC Support | Full HDLC receive/transmit per channel with CRC-16/CCITT polynomial and address field detection |
| Alarm Handling | Detects and generates AIS, RED, LOF, RAI, and LOS alarms with interrupt reporting per channel |
| PRBS Testing | On-chip PRBS-20 generator/detector per channel for loopback diagnostics and link integrity verification |
Pinout & Package
82V2108PX8 is packaged in a 128-pin plastic quad flat pack (PQFP) with 0.4 mm lead pitch and exposed thermal pad. Pinout is defined per IDT datasheet Rev 5 (Nov 2012), Section 1.1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RSD0–RSD7 | Receive Serial Data Inputs | Eight independent E1/T1/J1 serial data inputs, each synchronized to corresponding RSCKn |
| RSCK0–RSCK7 | Receive Serial Clock Inputs | Channel-specific receive clock inputs supporting slave or master mode operation |
| TSD0–TSD7 | Transmit Serial Data Outputs | Eight independent framed outputs, each aligned to TSCKn and configurable for CAS/RBS insertion |
| TSCK0–TSCK7 | Transmit Serial Clock Outputs | Programmable transmit clocks derived from internal PLL or external source |
| INT0–INT7 | Interrupt Outputs | Dedicated open-drain interrupt lines per channel for alarm, sync loss, or PRBS error events |
| RESETn | Active-Low Reset Input | Asynchronous global reset that clears all registers and halts framer operation until deasserted |
Key Features
| Feature | Design Value |
|---|---|
| Octal Channel Independence | Each of 8 framers operates autonomously with separate configuration registers, eliminating inter-channel timing crosstalk |
| Multi-Standard Framing | Single device supports E1 (G.704), T1 (T1.107), and J1 (JIA-553) formats - no hardware change required for regional deployment |
| Integrated Jitter Attenuation | On-die RJAT (receive) and TJAT (transmit) blocks meet G.823/G.824 masks - removes external VCXO + PLL complexity |
| Full CAS/RBS Handling | Hardware-accelerated channel-associated signaling extraction and insertion for E1 (CAS) and T1/J1 (RBS) - reduces host CPU load |
| PRBS Loopback Validation | Per-channel PRBS-20 generation and detection with error counters - enables automated production test without external pattern generators |
Applications
| Cellular Base Station Backhaul | DSLAM Line Card |
|---|---|
Use Scenario: Aggregating eight E1 links from remote radio units into a central baseband unit via TDM over fiber or copper. IC Role / Device Role / Timing Role: Framer and timing recovery engine - extracts E1 frames, recovers embedded clock, and presents aligned 8-bit parallel data to backplane ASIC. Use Value: Enables deterministic latency (<5 µs per channel) and sub-100 ns jitter cleanup, critical for CPRI-equivalent timing alignment across distributed radios. | Use Scenario: Supporting eight T1 subscriber lines on a DSLAM line card with integrated voice and data services. IC Role / Device Role / Timing Role: T1 framer and CAS signaling processor - terminates T1 spans, extracts channel-associated signaling for call setup, and forwards payload to VoIP gateway. Use Value: Hardware-based RBS bit manipulation and alarm injection reduce software overhead by >70%, allowing single ARM core to manage 32+ T1 lines. |
| Enterprise PBX Gateway | Metro Ethernet Aggregation Switch |
Use Scenario: Converting legacy T1/E1 trunk interfaces to SIP/RTP streams in a session border controller appliance. IC Role / Device Role / Timing Role: E1/T1 framer and HDLC controller - performs frame alignment, CRC validation, and HDLC packet assembly for signaling transport. Use Value: Built-in HDLC receiver with address filtering offloads SIP stack from low-level TDM signaling parsing, improving call setup throughput by 3×. | Use Scenario: Embedding TDM-aware forwarding in a metro switch supporting CESoPSN and SAToP pseudowire encapsulation. IC Role / Device Role / Timing Role: Jitter-cleaned T1/E1 framer feeding packet mapper - provides stable, G.823-compliant clock to packetization engine. Use Value: Integrated TJAT ensures <0.01 UI p-p jitter on transmit clock, meeting RFC 5086 timing requirements for circuit emulation without external clock conditioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal T1/E1/J1 framer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX5895ETM+ | Quad-channel only; requires two devices for octal capacity; lacks integrated jitter attenuator | Suitable for space-constrained designs where channel count is ≤4 and external jitter cleanup is acceptable | Select when board area is primary constraint and system already includes jitter-cleaning circuitry |
| TI CD1000YBGT | Octal framer with identical E1/T1/J1 support but uses 144-pin PBGA; no PRBS detector per channel | Better thermal performance in high-density line cards; limited built-in diagnostics vs. 82V2108PX8 | Prefer for new designs targeting higher ambient temperature operation (>85°C case) |
Compared with MAX5895ETM+ and TI CD1000YBGT, the 82V2108PX8 uniquely delivers full octal framing, on-die jitter attenuation, and per-channel PRBS diagnostics in a single 128-pin PQFP - reducing BOM count, PCB layers, and validation effort for carrier-class TDM aggregation.
Availability
82V2108PX8 is available at Aetrix Electronics and suitable for cellular base station backhaul, DSLAM line cards, and enterprise PBX gateways requiring stable component supply and long-term lifecycle assurance.
Supply support for 82V2108PX8 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 U.S.-based semiconductor company specializing in timing, memory interface, RF, and communications ICs before its acquisition by Renesas Electronics in 2019.
The 82V2108PX8 belongs to IDT's legacy T1/E1/J1 framer product line, engineered specifically for carrier-grade TDM infrastructure requiring multi-channel framing, strict jitter compliance, and hardware-accelerated signaling processing.
FAQ
What is the primary function of the 82V2108PX8 in a TDM system?
The 82V2108PX8 serves as an octal T1/E1/J1 framer IC that performs frame synchronization, CAS/RBS signaling extraction, HDLC packet handling, and jitter attenuation for eight independent digital telephony lines. It converts raw serial line data into aligned parallel payloads while maintaining strict ITU-T timing compliance - making it essential for multi-service access platforms and channelized routers where deterministic TDM timing is non-negotiable.
Does the 82V2108PX8 support both E1 and T1 framing in the same design?
Yes, the 82V2108PX8 supports concurrent E1 and T1 framing - each of its eight channels can be independently configured for E1 (32-slot), T1 (24-slot), or J1 (24-slot) mode via register programming. This flexibility allows a single 82V2108PX8-based line card to serve mixed-regional deployments without hardware modification, provided clock sources and line interfaces match the selected standard per channel.
What package type is used for the 82V2108PX8, and is it RoHS compliant?
The 82V2108PX8 is supplied in a 128-pin plastic quad flat pack (PQFP) with 0.4 mm lead pitch and exposed thermal pad. Per IDT documentation dated November 2012, this variant is RoHS-compliant and lead-free, meeting JEDEC J-STD-020C reflow profile requirements. The 82V2108PX8 datasheet explicitly identifies "PX8" as the suffix denoting the 128-pin PQFP RoHS-compliant version.
How does the 82V2108PX8 handle clock recovery and jitter?
The 82V2108PX8 integrates dedicated receive and transmit jitter attenuators (RJAT/TJAT) meeting ITU-T G.823 (E1) and G.824 (T1) masks. It recovers clock from incoming serial data using elastic store buffers with ±125 ppm tolerance, then cleans jitter before distributing the stabilized clock to downstream logic. This eliminates the need for external VCXOs or PLLs in most carrier applications - a key differentiator of the 82V2108PX8 versus basic framers.
Can the 82V2108PX8 generate and detect PRBS patterns for production testing?
Yes, the 82V2108PX8 includes a per-channel PRBS-20 generator and detector with dedicated error counters and interrupt flags. Each of the eight framers can independently run PRBS testing on its receive path while transmitting known patterns - enabling full-loop diagnostics without external test equipment. This capability is documented in Section 3.12 of the official IDT 82V2108 datasheet Rev 5 and is accessible via standard register writes to the PRGD block.
82V2108PX8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 128-BFQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- -
- Interface:
- Parallel
- Number of Circuits:
- 8
- Voltage - Supply:
- 2.97V ~ 3.63V
- Current - Supply:
- 160mA
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 128-PQFP (14x20)
82V2108PX8 FAQ
1.How can I place an order for 82V2108PX8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 82V2108PX8 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 82V2108PX8 reliable?
The price and inventory of 82V2108PX8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 82V2108PX8 is usually 5 days.
3.What payment methods are accepted for 82V2108PX8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 82V2108PX8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 82V2108PX8?
82V2108PX8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 82V2108PX8 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 82V2108PX8?
For technical support, including 82V2108PX8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 82V2108PX8 requirements.
6.How does Aetrix verify that 82V2108PX8 is sourced from the original manufacturer or authorized distributors?
All 82V2108PX8 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 82V2108PX8 meets industry standards.
7.What is the process for return or replacement of 82V2108PX8?
All 82V2108PX8 units undergo pre-shipment inspection (PSI). If there is an issue with 82V2108PX8, 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 82V2108PX8 part is unused and in its original packaging.
Return procedure for 82V2108PX8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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