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Renesas 82V2048DA
- Part No.:
- 82V2048DA
- Manufacturer:
- Renesas
- Category:
- Telecom
- Package:
- 144-LQFP
- Datasheet:
-
82V2048DA.pdf
- Description:
- IC TELECOM INTERFACE 144TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,037
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Product details
Overview
IDT82V2048 from Integrated Device Technology, Inc. is an octal T1/E1 short-haul line interface unit (LIU) integrating eight independent transceiver channels for telecom access systems. It supports 100 Ω T1, 120 Ω E1 twisted-pair, and 75 Ω E1 coaxial interfaces; provides selectable single/dual rail operation; implements B8ZS/HDB3 or AMI encoding/decoding; and delivers G.703/T1.102-compliant transmit pre-equalization. It is deployed in SDH/SONET multiplexers and digital radio base stations.
For engineers reviewing the IDT82V2048 datasheet, IDT82V2048 pinout, IDT82V2048 application, or IDT82V2048 equivalent, key selection criteria include jitter attenuation path configuration (TX/RX), LOS detection compliance (ITU G.775, T1.231), G.772 non-intrusive monitoring capability, hardware vs. serial/parallel host interface mode, and dual-rail clock/data recovery support.
Technical Context
The IDT82V2048 integrates eight identical T1/E1 transceivers with independent DPLL-based clock and data recovery per channel, supporting both NRZ input (single rail) and differential positive/negative pulse input (dual rail). Each channel includes programmable transmit waveform shaping, built-in jitter attenuators meeting ITU G.823 and ETSI CTR12/13, and digital/analog LOS detection per ITU G.775.
It features a flexible control architecture: hardware mode via MODE[2:0] and TS[2:0], serial SPI-compatible interface (CS/SCLK/SDI/SDO), or Intel/Motorola-parallel bus (multiplexed/non-multiplexed, 8-bit). JTAG boundary scan (TRST/TCK/TMS/TDI/TDO) and Hitless Protection Switching (HPS) are embedded for board-level test and redundancy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 8 independent T1/E1 transceivers, each with dedicated TX/RX analog I/O and digital interface pins. |
| Data Rates | 1.544 MHz (T1) or 2.048 MHz (E1); master clock MCLK must match selected rate for full functionality. |
| Jitter Attenuation | Selectable placement in TX or RX path; meets ITU G.736/G.742/G.823, ETSI CTR12/13, and AT&T Pub 62411. |
| Line Interface | Supports 100 Ω T1, 120 Ω E1 twisted pair, and 75 Ω E1 coaxial; low-impedance drivers ensure G.703/T1.102 template compliance. |
| LOS Detection | Digital/analog hybrid detector compliant with ITU G.775, ETS 300 233, and T1.231; asserts LOSn output on signal loss or insufficient ones density. |
| G.772 Monitoring | Non-intrusive in-service monitoring of any one of channels 1–7 routed to channel 0; enables real-time diagnostics without service interruption. |
| Supply Voltage | 3.3 V core (VDDD/VDDA/VDDIO); transmitter drivers support 3.3 V or 5 V (all VDDT pins must be uniformly biased). |
Pinout & Package
Available in 144-pin Thin Quad Flat Pack (TQFP) and 160-pin Plastic Ball Grid Array (PBGA); both packages support industrial temperature range (−40°C to +85°C) and green RoHS-compliant options.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TTIPn/TRINGn (n=0–7) | Differential TX output | Bipolar tip/ring line driver outputs; high-Z when OE = low or TCLKn = low; require external transformer coupling. |
| RTIPn/RRINGn (n=0–7) | Differential RX input | Bipolar tip/ring receiver inputs; accept ±3 V peak-to-peak T1/E1 line signals; feed internal slicer and DPLL. |
| TCLKn, RCLKn (n=0–7) | Channel clock I/O | TCLKn: 1.544/2.048 MHz TX reference; RCLKn: recovered RX clock output (rising/falling edge selectable via CLKE). |
| TDn / TDPn/TDNn | TX data input | Single rail: NRZ on TDn; dual rail: positive/negative pulses on TDPn/TDNn; sampled on falling edge of TCLKn. |
| RDn / RDPn/RDNn | RX data output | Single rail: decoded NRZ on RDn; dual rail: raw RZ pulses on RDPn/RDNn; clocked by RCLKn edge per CLKE state. |
| LOSn (n=0–7) | Status output | Open-drain active-high loss-of-signal indicator per channel; meets ITU G.775 timing thresholds. |
| MODE[2:0], CS, SCLK, SDI, SDO | Control interface | Select hardware/serial/parallel mode; serial interface uses SPI-like timing; parallel supports Intel/Motorola bus protocols. |
| TRST, TCK, TMS, TDI, TDO | JTAG boundary scan | IEEE 1149.1-compliant test interface; enables PCB-level interconnect verification and in-system programming support. |
Key Features
| Feature | Design Value |
|---|---|
| Octal T1/E1 integration | Single-chip solution replaces eight discrete LIUs; reduces BOM count, PCB area, and power by >40% vs. multi-chip alternatives. |
| Selectable jitter attenuator path | Configurable per-system need: TX-path placement cleans outgoing signal for repeater cascading; RX-path placement improves downstream timing margin. |
| G.772 non-intrusive monitoring | Enables live traffic analysis on any monitored channel (1–7) using channel 0's receive path-no service disruption or added latency. |
| Hitless Protection Switching (HPS) | 1:1 protection without mechanical relays; maintains bit continuity during failover-critical for SONET/SDH transport layers requiring <50 ms switchover. |
| 3.3 V core with 5 V tolerant I/O | VDDIO and all digital I/O pins tolerate 5 V; simplifies interface to legacy 5 V controllers while minimizing core power consumption (~1.2 W typical). |
| Hardware + software control modes | Hardware mode enables boot-time operation without host CPU; serial/parallel host modes allow dynamic reconfiguration via register writes. |
Applications
| Central Office Digital Cross-Connect | Wireless Base Station Backhaul |
|---|---|
Use Scenario: Aggregating eight E1 links from remote DSLAMs into a TDM switch fabric. IC Role / Device Role / Timing Role: Line interface unit performing clock/data recovery, B8ZS decoding, and jitter attenuation before switching matrix ingress. Use Value: Meets ITU G.742 jitter transfer specs; enables deterministic delay alignment across all eight E1 paths for synchronous TDM switching. |
Use Scenario: Connecting microwave radio units to a central BTS controller over 100 Ω T1 lines. IC Role / Device Role / Timing Role: Short-haul physical layer transceiver handling T1 framing, LOS detection, and transmit template shaping for RF link stability. Use Value: Built-in G.703-compliant waveform shaper eliminates external equalization components; reduces bill-of-materials and layout complexity. |
| SDH/SONET Add-Drop Multiplexer | Digital PBX Trunk Interface |
Use Scenario: Terminating eight E1 tributaries into a STM-1 add-drop multiplexer for metro ring networks. IC Role / Device Role / Timing Role: T1/E1 LIU providing SONET-optimized jitter attenuation (ITU G.783 mapping jitter compliance) and G.772 monitoring for maintenance. Use Value: Jitter attenuator meets G.783 phase noise mask; ensures clean 155.52 MHz STS-3 payload clock derivation downstream. |
Use Scenario: Interfacing legacy PBX systems to modern IP-PBX gateways via T1 trunk lines. IC Role / Device Role / Timing Role: Dual-rail mode transceiver enabling direct connection to legacy T1 line cards with separate pulse polarity signaling. Use Value: Dual-rail RDPn/RDNn outputs eliminate need for external polarity logic; simplifies interface to PBX-side framer ASICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar T1/E1 line interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TLK2201B | Single-channel, 10/100 Mbps Ethernet PHY with integrated T1/E1 line driver; no jitter attenuator or G.772 monitoring. | Targeted at packet-based backhaul; lacks octal integration and telecom-specific LOS/jitter specs. | Choose for Ethernet-over-T1 bridging where LIU functionality is secondary to MAC/PHY integration. |
| Maxim MAX3273 | Quad T1/E1 LIU; supports only single-rail mode; no dual-rail or G.772 monitoring; smaller 100-pin TQFP package. | Lower channel count and reduced feature set; suitable for cost-sensitive, space-constrained edge demarcation devices. | Choose when four channels suffice and advanced monitoring/jitter control is not required. |
Compared with TLK2201B and MAX3273, the IDT82V2048 uniquely delivers octal integration, selectable TX/RX jitter attenuation, G.772 monitoring, and Hitless Protection Switching-making it optimal for carrier-grade TDM infrastructure where channel density, service continuity, and in-service diagnostics are mandatory.
Availability
IDT82V2048 is available at Aetrix Electronics and suitable for SDH/SONET multiplexers, digital radio base stations, and central office cross-connect systems requiring stable component supply, long-term lifecycle support, and industrial temperature operation.
Supply support for IDT82V2048 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 IDT82V2048 belongs to IDT's telecom line interface product line, designed specifically for carrier-class TDM infrastructure requiring multi-channel integration, stringent jitter performance, and in-service monitoring capabilities.
FAQ
What is the primary function of the IDT82V2048 in a T1/E1 system?
The IDT82V2048 serves as an octal line interface unit (LIU), providing complete physical layer transceiver functionality for eight independent T1 or E1 channels. It performs clock and data recovery, line encoding/decoding (AMI/B8ZS/HDB3), transmit waveform shaping, jitter attenuation, and LOS detection-all within a single IC. Its role is to bridge the digital system side (NRZ or dual-rail data) with the analog line side (bipolar T1/E1 signals), ensuring signal integrity and standards compliance.
Does the IDT82V2048 support both T1 and E1 standards simultaneously across different channels?
No-the IDT82V2048 operates in global T1 or E1 mode, not per-channel. Mode selection is configured either via hardware pins (TS[2:0]) or software register (TS), applying uniformly to all eight channels. The device cannot run four channels in T1 mode and four in E1 mode concurrently; all channels must use the same line rate (1.544 MHz or 2.048 MHz) and corresponding encoding rules (B8ZS for T1, HDB3 for E1).
How does the G.772 non-intrusive monitoring work on the IDT82V2048?
The IDT82V2048 implements G.772 monitoring by internally routing the analog line signals (RTIPn/RRINGn or TTIPn/TRINGn) from any selected channel (1–7) to the dedicated monitoring channel (channel 0) without interrupting live traffic. Configuration is done via MC[3:0] pins in hardware mode or register writes in host mode. The monitored signal appears on RDP0/RDN0 (for receive monitoring) or TTIP0/TRING0 (when remote loopback is enabled), enabling real-time in-service testing and diagnostics.
What are the power supply requirements for the IDT82V2048's transmitter drivers?
The IDT82V2048 requires uniform biasing of all eight VDDT pins: either all connected to 3.3 V or all to 5 V. Mixing voltages is prohibited. For T1 operation, 5 V is mandatory on VDDT pins to meet G.703 amplitude and template requirements; E1 operation supports either 3.3 V or 5 V. Core supplies (VDDD, VDDA, VDDIO) operate strictly at 3.3 V, and all digital I/O pins are 5 V tolerant.
Can the IDT82V2048 perform clock recovery in dual-rail mode?
Yes-the IDT82V2048 supports clock recovery in dual-rail mode, where RDPn and RDNn carry positive/negative pulse data and RCLKn outputs the recovered clock derived from the XOR of those signals. This mode is distinct from "data recovery only" (raw RZ slicing without clock recovery), which outputs unsynchronized RZ pulses on RDPn/RDNn. Clock recovery in dual-rail mode is enabled by default and configurable via register settings or hardware pins.
82V2048DA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 144-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Line Interface Unit (LIU)
- Interface:
- LIU
- Number of Circuits:
- -
- Voltage - Supply:
- 3.13V ~ 3.47V
- Current - Supply:
- 55mA
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-TQFP (20x20)
82V2048DA FAQ
1.How can I place an order for 82V2048DA through Aetrix?
Please submit a Request for Quotation (RFQ) for 82V2048DA 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 82V2048DA reliable?
The price and inventory of 82V2048DA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 82V2048DA is usually 5 days.
3.What payment methods are accepted for 82V2048DA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 82V2048DA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 82V2048DA?
82V2048DA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 82V2048DA 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 82V2048DA?
For technical support, including 82V2048DA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 82V2048DA requirements.
6.How does Aetrix verify that 82V2048DA is sourced from the original manufacturer or authorized distributors?
All 82V2048DA 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 82V2048DA meets industry standards.
7.What is the process for return or replacement of 82V2048DA?
All 82V2048DA units undergo pre-shipment inspection (PSI). If there is an issue with 82V2048DA, 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 82V2048DA part is unused and in its original packaging.
Return procedure for 82V2048DA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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