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Texas Instruments XIO1100ZGB
- Part No.:
- XIO1100ZGB
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 100-LFBGA
- Datasheet:
-
XIO1100ZGB.pdf
- Description:
- IC INTERFACE SPECIALIZED 100BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,543
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Product details
Overview
XIO1100ZGB from Texas Instruments is a PCI Express 1.1-compliant PHY device implementing the TI-PIPE MAC interface, supporting 2.5 Gbps serial link operation with differential TXP/TXN and RXP/RXN I/O, 100/125 MHz reference clock selection, and dual-mode (8-bit DDR / 16-bit SDR) parallel interface. It serves as the physical layer bridge between PCIe MAC logic and serial lane in embedded host controllers and add-in cards.
For engineers reviewing the XIO1100ZGB datasheet, XIO1100ZGB pinout, XIO1100ZGB application, or XIO1100ZGB equivalent, key selection criteria include TI-PIPE interface configuration (DDR_EN, CLK_SEL), power state control (POWERDOWN[1:0], P1_SLEEP), elastic buffer SKP handling, 8B/10B decode error reporting via RX_STATUS, and GGB BGA package compatibility for high-speed PCB layout.
Technical Context
The XIO1100ZGB implements a modified PIPE interface-TI-PIPE-with source-synchronous TX_CLK and RX_CLK clocks, unlike Intel's single-clock PIPE. In 16-bit mode, it operates at 125 MHz SDR; in 8-bit mode, at 250 MHz DDR, enabling flexible bandwidth-to-pin-count trade-offs.
It integrates full 8B/10B encoding/decoding, clock recovery via elastic buffer (7-symbol depth), SKP ordered-set insertion/removal for ±600 ppm clock tolerance compensation, and four-tiered error prioritization (8B/10B decode > elastic overflow > underflow > disparity). Power management supports P0, P0s, and P1 states with PHY_STATUS–based transition signaling and P1_SLEEP–enabled RX_CLK gating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCIe Compliance | PCI Express Base Specification Revision 1.1 compliant physical layer device |
| Data Rate | 2.5 Gbps per lane; supports single-lane PCIe x1 links |
| Interface Mode | Selectable 16-bit SDR @ 125 MHz or 8-bit DDR @ 250 MHz via DDR_EN pin |
| Reference Clock | 100 MHz differential (REFCLK+/REFCLK−) or 125 MHz single-ended (REFCLK+) selected by CLK_SEL |
| Elastic Buffer Depth | ≥7 symbols; compensates for ±600 ppm frequency mismatch between link endpoints |
| Power States | P0 (full operation), P0s (TX idle), P1 (both TX/RX idle); controlled by POWERDOWN[1:0] |
| Supply Voltages | VDD_IO = 1.5 V or 1.8 V (sets TI-PIPE I/O level); VDDA_15/VDDA_33 for analog PLL/core |
Pinout & Package
The XIO1100ZGB is housed in a 100-pin MicroStar BGA package (GGB footprint, 0.8 mm pitch), optimized for impedance-controlled routing of high-speed differential pairs and low-noise analog/IO supply partitioning.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /RESET (N11) | Asynchronous reset input | Active-low signal that must be held until REFCLK and power stabilize; initiates PHY initialization sequence |
| TXP/TXN (G12/G13) | Differential transmit output | 2.5 Gbps PCIe serial output pair; requires 100 Ω differential termination and controlled-impedance routing |
| RXP/RXN (C13/C12) | Differential receive input | 2.5 Gbps PCIe serial input pair; supports receiver detection and polarity inversion via RxPolarity |
| TX_CLK (M8) | Source-synchronous transmit clock input | Drives latching of TX_DATA[15:0]/TX_DATAK[1:0]; SDR or DDR behavior determined by DDR_EN at reset |
| RX_CLK (B8) | Source-synchronous receive clock output | Derived from REFCLK; clocks RX_DATA[15:0]/RX_DATAK[1:0]; remains active in P0s/P1 states |
| PHY_STATUS (N10) | Status indicator output | Pulsed for one RX_CLK cycle to confirm power state transitions or receiver detection completion |
| POWERDOWN[1:0] (L9, M9) | Power state control inputs | Encodes P0 (00), P0s (01), or P1 (10); determines clock gating, PLL enable, and RX_CLK behavior |
Key Features
| Feature | Design Value |
|---|---|
| TI-PIPE Interface Flexibility | Configurable 8-bit DDR or 16-bit SDR mode enables layout- and timing-optimized integration with diverse MAC implementations |
| SKP Ordered-Set Handling | Real-time elastic buffer adjustment via COM/SKP symbol detection prevents overflow/underflow across ±600 ppm clock mismatches |
| Priority-Based Error Reporting | RX_STATUS[2:0] encodes 8B/10B decode, elastic overflow/underflow, and disparity errors with strict priority ordering for debug clarity |
| Low-Power State Coordination | P1_SLEEP input allows optional RX_CLK shutdown in P1 state, reducing dynamic power without compromising wake latency |
| Receiver Detection Logic | Hardware-accelerated link partner presence check via TXDETECTRX/LOOPBACK, returning status on RX_STATUS[2:0] |
Applications
| PCIe Add-In Card PHY | Embedded Host Controller Interface |
|---|---|
Use Scenario: High-speed peripheral connectivity in industrial PCIe add-in cards (e.g., data acquisition, FPGA co-processing). IC Role / Device Role / Timing Role: PCIe PHY bridging FPGA-based MAC to external PCIe slot; provides 2.5 Gbps lane with TI-PIPE timing handshake. Use Value: Enables drop-in replacement of legacy PHYs with identical GGB footprint and TI-PIPE register mapping, preserving board layout and firmware timing margins. |
Use Scenario: On-board PCIe root complex in telecom baseband processors or network appliances requiring internal expansion lanes. IC Role / Device Role / Timing Role: Physical layer transceiver interfacing SoC MAC to internal PCIe switch or endpoint; manages L0/L0s/L1 state transitions per LTSSM. Use Value: Supports P0s/P1 power gating coordinated with MAC, reducing idle power by >40% while maintaining sub-64 µs L1 exit latency. |
| PCIe-to-PCI Bridge Reference Design | Test Equipment Serial Link Interface |
Use Scenario: Reference implementation for PCIe-to-PCI/PCI-X bridges where PHY-level signal integrity and compliance testing are critical. IC Role / Device Role / Timing Role: PHY providing electrical compliance (Electrical Idle, SKP generation) and loopback test mode for validation of MAC-to-lane handoff. Use Value: Built-in loopback (TX_DET_LOOPBACK) and electrical idle (TX_ELECIDLE) support eliminates need for external test fixtures during bring-up. |
Use Scenario: High-fidelity protocol analysis and bit-error-rate testing in PCIe protocol analyzers and compliance testers. IC Role / Device Role / Timing Role: PHY generating and receiving deterministic 2.5 Gbps streams with precise 8B/10B decode visibility via RX_STATUS and EDB injection. Use Value: Real-time error injection (8B/10B decode, elastic buffer faults) and SKP monitoring enable repeatable stress testing of upper-layer protocol stacks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe PHY applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT8N34S01B | PCIe 2.0-compliant (5.0 Gbps), integrated PLL, no TI-PIPE interface; uses standard PIPE v2.0 | Requires MAC redesign for PIPE v2.0 timing and register map; supports higher bandwidth but lacks P1_SLEEP control | Choose when upgrading to PCIe 2.0 and migrating to industry-standard PIPE; not pin- or firmware-compatible |
| Pericom PI3EQX1002 | PCIe 1.1 redriver (not PHY), no MAC interface, no 8B/10B logic, no TI-PIPE or power state control | Used only for signal boosting over long traces; cannot replace XIO1100ZGB in MAC-to-lane bridging role | Choose only for passive channel loss compensation; not a functional alternative for PHY-integrated designs |
Compared with IDT8N34S01B and PI3EQX1002, the XIO1100ZGB uniquely delivers TI-PIPE–based MAC integration, configurable DDR/SDR interface, and fine-grained P0s/P1 power control-making it irreplaceable in legacy PCIe 1.1 systems requiring TI-specific PHY behavior and GGB package constraints.
Availability
XIO1100ZGB is available at Aetrix Electronics and suitable for PCIe add-in card development, embedded host controller integration, and test equipment design requiring stable component supply and long-term industrial lifecycle support.
Supply support for XIO1100ZGB 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
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity technologies, with leadership in high-speed interface IP and automotive/industrial-grade reliability.
The XIO1100ZGB belongs to TI's PCI Express PHY product line, designed specifically to simplify PCIe 1.1 adoption in resource-constrained embedded systems through TI-PIPE interoperability, low-power state management, and GGB package optimization for thermal and signal integrity.
FAQ
What is the primary function of the XIO1100ZGB in a PCIe system?
The XIO1100ZGB serves as a PCI Express 1.1-compliant physical layer transceiver, bridging the MAC layer to the serial link using the TI-PIPE interface. It handles 2.5 Gbps differential signaling (TXP/TXN, RXP/RXN), 8B/10B encoding/decoding, clock recovery, elastic buffering, and power state coordination. Its role is strictly PHY-level signal conversion and link-layer timing-XIO1100ZGB does not implement link training or transaction layer functions.
How does the XIO1100ZGB support both 8-bit DDR and 16-bit SDR TI-PIPE modes?
The XIO1100ZGB selects interface mode via the DDR_EN pin at reset: low enables 16-bit SDR at 125 MHz (TX_DATA[15:0] latched on TX_CLK rising edge); high enables 8-bit DDR at 250 MHz (TX_DATA[7:0] latched on both TX_CLK edges). RX_CLK and RX_DATA[15:0] follow the same mode. This dual-mode capability allows designers to optimize pin count versus timing margin-XIO1100ZGB maintains full protocol compliance in either configuration.
What power states does the XIO1100ZGB support, and how are they controlled?
The XIO1100ZGB supports three power states: P0 (full operation), P0s (TX idle), and P1 (TX/RX idle), selected by POWERDOWN[1:0] (L9/M9). Transitions are acknowledged via PHY_STATUS pulses. P1_SLEEP (M10) optionally disables RX_CLK in P1 to reduce power further. All states maintain REFCLK dependency and require MAC coordination-XIO1100ZGB enforces strict LTSSM alignment without autonomous state changes.
How does the XIO1100ZGB handle clock tolerance between PCIe link partners?
The XIO1100ZGB uses a 7-symbol-deep elastic buffer to absorb ±600 ppm clock frequency differences. It monitors incoming data for SKP ordered-sets (COM + three SKP symbols) and dynamically inserts or removes SKP symbols to prevent buffer overflow/underflow. RX_STATUS[2:0] reports "Add SKP" (001b) or "Remove SKP" (010b) in the same RX_CLK cycle as the COM symbol-XIO1100ZGB performs this compensation transparently without MAC intervention.
Can the XIO1100ZGB be used in PCIe 2.0 or later systems?
No-the XIO1100ZGB is specified exclusively for PCI Express Base Specification Revision 1.1 (2.5 Gbps). It lacks PCIe 2.0 features including 5.0 Gbps operation, enhanced equalization, and PIPE v2.0 compliance. Attempting to use XIO1100ZGB in a PCIe 2.0 link will result in negotiation failure or unstable operation. For higher-speed applications, TI's newer PCIe 2.0/3.0 PHYs or third-party alternatives must be selected instead of XIO1100ZGB.
XIO1100ZGB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 100-LFBGA
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- TI-PIPE
- Voltage - Supply:
- 1.35V ~ 1.65V, 3V ~ 3.6V
- Supplier Device Package:
- 100-BGA MICROSTAR (12.1x12.1)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
XIO1100ZGB FAQ
1.How can I place an order for XIO1100ZGB through Aetrix?
Please submit a Request for Quotation (RFQ) for XIO1100ZGB 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 XIO1100ZGB reliable?
The price and inventory of XIO1100ZGB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XIO1100ZGB is usually 5 days.
3.What payment methods are accepted for XIO1100ZGB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XIO1100ZGB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XIO1100ZGB?
XIO1100ZGB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XIO1100ZGB 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 XIO1100ZGB?
For technical support, including XIO1100ZGB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XIO1100ZGB requirements.
6.How does Aetrix verify that XIO1100ZGB is sourced from the original manufacturer or authorized distributors?
All XIO1100ZGB 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 XIO1100ZGB meets industry standards.
7.What is the process for return or replacement of XIO1100ZGB?
All XIO1100ZGB units undergo pre-shipment inspection (PSI). If there is an issue with XIO1100ZGB, 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 XIO1100ZGB part is unused and in its original packaging.
Return procedure for XIO1100ZGB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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