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Renesas 89HT0808PYAABG
- Part No.:
- 89HT0808PYAABG
- Manufacturer:
- Renesas
- Category:
- Specialized
- Package:
- 100-LFBGA
- Datasheet:
-
89HT0808PYAABG.pdf
- Description:
- IC INTFACE SPECIALIZED 100CABGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,840
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Product details
Overview
89HT0808PYAABG from Integrated Device Technology is an 8-channel PCIe® 3.0 signal retimer IC that conditions high-speed serial links at 8.0 Gbps, 5.0 Gbps, and 2.5 Gbps. It eliminates random and deterministic jitter, compensates for PCB trace/cable loss via CTLE + 5-tap DFE equalization, and supports per-lane de-emphasis up to 8 dB. It is deployed in server backplanes and long-trace PCIe slots to restore signal integrity and enable reliable Gen 3 link training.
For engineers reviewing the 89HT0808PYAABG datasheet, 89HT0808PYAABG pinout, 89HT0808PYAABG application, or 89HT0808PYAABG equivalent, key selection criteria include PCIe 3.0 compliance, per-lane configurability (1x4/1x1/2x1), L0s/L1 ASPM support, I²C master/slave interface for EEPROM-based configuration, and 9×9 mm 100-ball BGA packaging with 0.8 mm pitch.
Technical Context
The 89HT0808PYAABG implements a full SerDes retiming architecture with independent Rx equalization (CTLE + 5-tap DFE) and Tx de-emphasis per lane. Its fast-acquisition PLL enables sub-2 µs L0s exit recovery, and on-chip SERDES Rx eye generation supports real-time signal health monitoring.
It operates with a standard 100 MHz PCIe reference clock and supports both spread-spectrum (SSCLK) and non-SSCLK configurations in common-clock and separate-clock topologies. All CSR registers are accessible via I²C or IEEE 1149.1/1149.6 JTAG interfaces for debug and diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rates | 2.5 Gbps, 5.0 Gbps, and 8.0 Gbps - fully supports PCIe Gen 1/2/3 link speeds with automatic rate detection. |
| Channels | 8 differential lanes - configurable as 1×4, 1×1, or 2×1 link widths with per-lane negotiation. |
| Jitter Removal | Removes both random jitter and deterministic ISI - resets output jitter budget to meet PCIe Gen 3 mask requirements. |
| Equalization | Multi-stage Rx: programmable CTLE + 5-tap DFE - compensates up to 25 dB channel loss at 4 GHz. |
| De-emphasis | Up to 8 dB transmit de-emphasis - adjustable per lane to match specific backplane or cable insertion loss profiles. |
| Power Management | L0s and L1 ASPM support - unused SerDes lanes auto-enter low-power state; half-swing mode reduces dynamic power. |
| Clock Input | 100 MHz differential reference clock - compatible with common-clock and separate-clock PCIe topologies; SSCLK supported. |
Pinout & Package
Package: 9 mm × 9 mm, 100-ball fine-pitch BGA (0.8 mm ball pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFCLK_P/N | Differential reference clock input | Accepts 100 MHz LVDS/LVPECL clock; required for all link rates and PLL operation. |
| TX[0:7]_P/N | Differential transmit outputs | 8 Gbps SerDes outputs with programmable de-emphasis; drive PCIe-compliant AC-coupled channels. |
| RX[0:7]_P/N | Differential receive inputs | High-sensitivity inputs with CTLE+DFE equalization; recover signals degraded by >25 dB loss. |
| I2C_SDA/SCL | I²C master/slave interface | Dedicated dual-role I²C port for loading EEPROM config, updating firmware, and accessing global CSR space. |
| TCK/TMS/TDO/TDI/nTRST | IEEE 1149.1/1149.6 JTAG interface | Full boundary-scan and AC-JTAG support for production test, debug, and loopback validation. |
Key Features
| Feature | Design Value |
|---|---|
| Per-lane SerDes configuration | Independent Rx equalization, Tx de-emphasis, and drive strength settings per lane - enables mixed-loss channel environments. |
| On-chip Rx eye generation | Real-time SERDES receiver eye diagram visualization - enables in-system signal health assessment without external equipment. |
| End-to-end data path parity | Hardware-level parity protection across retimer data path - detects and reports bit errors for RAS-critical server/storage systems. |
| Automatic lane power gating | SerDes blocks for untrained or inactive lanes enter hardware-defined low-power state - reduces idle power by >40% vs. full-enable mode. |
| PCIe-compliant L0s/L1 entry/exit | Sub-2 µs L0s exit latency with fast PLL relock - meets PCIe 3.0 power management timing requirements. |
Applications
| Server Backplane Interconnect | Enterprise Storage Expansion |
|---|---|
Use Scenario: Long-reach PCIe connections between CPU IOH and remote storage blades over FR4 backplanes with >30 dB loss at 4 GHz. IC Role / Device Role / Timing Role: Signal retimer restoring jitter margin and eye opening before PCIe receiver sampling. Use Value: Enables stable x8 Gen 3 links across 20+ inch backplanes where direct connection fails link training. | Use Scenario: High-density JBOD enclosures connecting multiple SAS/SATA drives via PCIe-switched fabric with daisy-chained retimers. IC Role / Device Role / Timing Role: Lane-aggregated retimer providing clean, jitter-cleaned signals to downstream PCIe switches. Use Value: Eliminates inter-symbol interference from multi-drop cabling, improving U.2/U.3 SSD reliability and sustained write throughput. |
| Workstation GPU Expansion | Communications Baseband Shelf |
Use Scenario: External GPU enclosure connected via active copper cable (>2 m) to workstation motherboard, suffering amplitude loss and jitter accumulation. IC Role / Device Role / Timing Role: Point-to-point retimer placed at cable receiver end to regenerate PCIe 3.0 x16 signal before GPU PCIe controller. Use Value: Restores 8.0 Gbps eye height/width to specification, enabling full bandwidth utilization and eliminating frame drops. | Use Scenario: Modular baseband processing shelf with hot-pluggable compute modules requiring PCIe Gen 3 connectivity over midplane connectors with aging contact resistance. IC Role / Device Role / Timing Role: Retimer with hot-plug-aware link training and error logging for field-deployable carrier-grade systems. Use Value: Maintains link stability during module insertion/removal and provides RAS telemetry via physical-layer error counters and EEPROM checksum protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe retimer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 89HT0816P | 16-channel version in same 9×9 mm 144-ball BGA package; identical architecture and feature set. | Targets higher lane-count systems (e.g., dual-CPU servers, multi-switch fabrics) requiring ≥16 lanes. | Select when scaling beyond 8 lanes while retaining identical register map, firmware, and layout compatibility. |
| PI7C9X2G608GP | 8-lane PCIe 3.0 switch + integrated retimer; includes internal packet routing logic and 2 KB buffer per port. | Used where switching + signal conditioning is required in one device (e.g., PCIe root complex expansion). | Choose when topology requires fan-out or traffic steering - not a drop-in replacement due to different pinout, power, and configuration model. |
Compared with 89HT0808PYAABG, the 89HT0816P scales lane count without changing design integration effort, while the PI7C9X2G608GP adds switching functionality at the cost of increased complexity, larger footprint, and non-retimer-specific configuration overhead.
Availability
89HT0808PYAABG is available at Aetrix Electronics and suitable for server backplane interconnect, enterprise storage expansion, and workstation GPU extension requiring stable component supply and long-term industrial availability.
Supply support for 89HT0808PYAABG 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), now part of Renesas Electronics, designs high-performance timing, memory interface, and signal integrity solutions for datacenter and communications infrastructure.
The 89HT0808PYAABG belongs to IDT's PCIe retimer product line, engineered specifically to solve signal degradation in Gen 3 server and storage interconnects with minimal latency and deterministic jitter cleanup.
FAQ
What PCIe generations does the 89HT0808PYAABG support?
The 89HT0808PYAABG supports PCIe Base Specification 3.0, 2.1, and 1.1 - operating natively at 8.0 Gbps (Gen 3), 5.0 Gbps (Gen 2), and 2.5 Gbps (Gen 1). It performs automatic rate detection and adapts equalization and de-emphasis settings per negotiated speed without firmware update.
Does the 89HT0808PYAABG require external configuration memory?
Yes, the 89HT0808PYAABG relies on external SPI or I²C EEPROM for initial configuration loading. Its dedicated I²C master interface automatically reads device setup parameters at power-up, including lane mapping, equalization presets, and power modes - no host processor intervention is needed for basic operation.
Can the 89HT0808PYAABG operate with non-spread-spectrum clocks?
Yes, the 89HT0808PYAABG supports both spread-spectrum (SSCLK) and non-SSCLK reference clocks. It works in common-clock and separate-clock PCIe topologies, and its PLL architecture maintains lock stability under ±0.5% frequency deviation - meeting PCIe 3.0 clock tolerance requirements without modification.
How does the 89HT0808PYAABG handle hot-plug events?
The 89HT0808PYAABG implements full PCIe-compliant hot-plug detection and recovery: it monitors presence detect (PERST# and WAKE#), performs autonomous link retraining upon insertion, logs physical-layer errors, and supports warm reset signaling. Its RAS features include error counters and EEPROM checksum verification to ensure configuration integrity after plug cycles.
Is JTAG access required to configure the 89HT0808PYAABG?
No, JTAG access is optional. The 89HT0808PYAABG is fully configurable via its dual-role I²C interface - used for EEPROM loading, runtime CSR read/write, and firmware updates. JTAG (IEEE 1149.1/1149.6) is provided for production test, boundary-scan validation, and advanced debug but is not needed for normal system operation or field updates.
89HT0808PYAABG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 100-LFBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- Signal Retimer
- Interface:
- I2C
- Voltage - Supply:
- -
- Supplier Device Package:
- 100-CABGA (9x9)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
89HT0808PYAABG FAQ
1.How can I place an order for 89HT0808PYAABG through Aetrix?
Please submit a Request for Quotation (RFQ) for 89HT0808PYAABG 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 89HT0808PYAABG reliable?
The price and inventory of 89HT0808PYAABG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 89HT0808PYAABG is usually 5 days.
3.What payment methods are accepted for 89HT0808PYAABG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 89HT0808PYAABG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 89HT0808PYAABG?
89HT0808PYAABG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 89HT0808PYAABG 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 89HT0808PYAABG?
For technical support, including 89HT0808PYAABG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 89HT0808PYAABG requirements.
6.How does Aetrix verify that 89HT0808PYAABG is sourced from the original manufacturer or authorized distributors?
All 89HT0808PYAABG 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 89HT0808PYAABG meets industry standards.
7.What is the process for return or replacement of 89HT0808PYAABG?
All 89HT0808PYAABG units undergo pre-shipment inspection (PSI). If there is an issue with 89HT0808PYAABG, 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 89HT0808PYAABG part is unused and in its original packaging.
Return procedure for 89HT0808PYAABG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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