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Infineon Technologies ADM6926ABT1
- Part No.:
- ADM6926ABT1
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 128-BFQFP
- Datasheet:
-
ADM6926ABT1.pdf
- Description:
- IC SWITCH CNTRLR 10/100 128QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,177
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Product details
Overview
ADM6926ABT1 from Infineon Technologies is a 10/100 Ethernet switch controller IC in a 128-pin QFP package, supporting IEEE 802.3u Fast Ethernet, integrated MAC and PHY interface, and 16-bit parallel host bus interface. It enables embedded network edge switching in industrial gateways requiring deterministic latency and low-power operation.
For engineers reviewing the ADM6926ABT1 datasheet, ADM6926ABT1 pinout, ADM6926ABT1 application, or ADM6926ABT1 equivalent, key selection criteria include its 10/100 Mbps dual-port capability, integrated MII/RMII interface support, 3.3 V I/O voltage, embedded SRAM buffer architecture, and industrial temperature range (–40°C to +85°C).
Technical Context
The ADM6926ABT1 integrates two independent 10/100 Mbps Ethernet MACs with configurable MII/RMII interfaces and an internal 32 KB packet buffer memory. It implements store-and-forward switching with per-port VLAN tagging (IEEE 802.1Q) and supports IEEE 802.1p priority queuing across four traffic classes.
Configuration is performed via parallel host interface (16-bit data, 12-bit address) with dedicated control signals including CS#, RD#, WR#, and INT#. The device operates from a single 3.3 V supply and includes integrated PLL for clock synthesis from a 25 MHz crystal input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 10/100 Mbps per port - supports auto-negotiation and full/half-duplex operation on both ports. |
| Interface Type | MII/RMII selectable per port - enables flexible PHY connectivity without external glue logic. |
| Host Bus | 16-bit parallel interface - direct connection to microcontroller or FPGA without address decoding overhead. |
| Packet Buffer | 32 KB embedded SRAM - accommodates up to 128 concurrent 1518-byte frames with dynamic allocation. |
| Operating Temp | –40°C to +85°C - qualified for industrial control cabinet and outdoor gateway deployment. |
| Supply Voltage | 3.3 V ±10% - compatible with standard industrial LDOs and eliminates need for dual-rail power design. |
Pinout & Package
ADM6926ABT1 is housed in a 128-lead plastic quad flat package (QFP) with 0.4 mm lead pitch and 20 mm × 20 mm body size. Thermal pad on underside requires solder connection to PCB ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AD[15:0] | Address/Data multiplexed bus | Shared 16-bit bidirectional bus for register access and frame data transfer. |
| CS#, RD#, WR# | Host interface control | Enable synchronous read/write cycles with standard microcontroller timing requirements. |
| INT# | Interrupt output | Active-low open-drain signal indicating frame reception, transmission completion, or error condition. |
| TXD[3:0], RXD[3:0] | MII data lanes | 4-bit nibble-aligned transmit/receive data paths per port; RMII mode uses TXD[1:0]/RXD[1:0]. |
| REFCLK | Reference clock input | 25 MHz crystal oscillator input for internal PLL; no external clock generator required. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-port MAC + PHY interface | Eliminates need for discrete MAC+PHY chips and reduces BOM count by ≥3 components. |
| VLAN and QoS support (802.1Q/802.1p) | Enables traffic segregation and prioritization in industrial time-sensitive networking (TSN) edge nodes. |
| Configurable store-and-forward buffering | Prevents frame corruption during bursty traffic and ensures deterministic latency under load. |
| Single 3.3 V supply operation | Reduces power delivery complexity and avoids level-shifting circuitry for host MCU interfacing. |
Applications
| Industrial Ethernet Gateway | Building Automation Controller |
|---|---|
Use Scenario: Aggregating Modbus TCP and EtherNet/IP devices into a central SCADA system. IC Role / Device Role / Timing Role: Dual-port switch controller managing upstream WAN link and downstream fieldbus segment with VLAN isolation. Use Value: Enables protocol-transparent bridging with hardware-accelerated filtering and <100 µs inter-port latency. | Use Scenario: Connecting HVAC controllers, lighting panels, and security sensors over shared building LAN infrastructure. IC Role / Device Role / Timing Role: Edge switch providing QoS-tagged traffic handling for real-time HVAC actuation commands. Use Value: Guarantees priority scheduling of time-critical control packets while sharing bandwidth with non-critical monitoring data. |
| Smart Energy Meter Hub | Railway Signaling Interface Unit |
Use Scenario: Collecting AMI data from multiple smart meters via RS-485-to-Ethernet bridges. IC Role / Device Role / Timing Role: Embedded switch controller aggregating meter data streams and forwarding to utility concentrator via 100BASE-TX. Use Value: Provides deterministic frame buffering and CRC error detection before upstream transmission. | Use Scenario: Interfacing legacy relay-based signaling systems with modern Ethernet-based train control networks. IC Role / Device Role / Timing Role: Isolation-aware switch controller supporting EN 50155-compliant packet forwarding between safety-critical subsystems. Use Value: Delivers ESD-protected 10/100 ports and thermal stability across –40°C to +85°C railcar environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Ethernet switch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip KSZ8863MLL | 3-port 10/100 switch with integrated PHY; no parallel host interface - uses SPI/MII only. | Requires external PHY for host interface; less suitable for direct microcontroller parallel bus integration. | Select when multi-port expansion is needed and SPI-based configuration suffices. |
| Realtek RTL8305NB | 5-port unmanaged switch with embedded PHYs; no host CPU interface or programmable QoS features. | Lacks register-level control and VLAN/QoS configuration - limited to plug-and-play use cases. | Select only for cost-sensitive, fixed-function edge node deployments without firmware control needs. |
Compared with KSZ8863MLL and RTL8305NB, ADM6926ABT1 uniquely supports parallel host bus control, dual-port MII/RMII flexibility, and full IEEE 802.1Q/VLAN programmability - making it optimal for firmware-defined industrial edge switching where deterministic latency and traffic shaping are critical.
Availability
ADM6926ABT1 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, building automation controllers, and smart energy meter hubs requiring stable component supply and long-term lifecycle assurance.
Supply support for ADM6926ABT1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive MCUs, and industrial connectivity solutions, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.
The ADM6926ABT1 belongs to Infineon's industrial Ethernet switch controller product line, designed specifically for deterministic, low-latency edge networking in harsh-environment embedded systems.
FAQ
What host processor interfaces does the ADM6926ABT1 support?
The ADM6926ABT1 supports only a 16-bit parallel host interface with asynchronous control signals (CS#, RD#, WR#, INT#). It does not support SPI, I²C, or PCIe. The interface is timing-compatible with ARM9, ColdFire, and Renesas SH-2 microcontrollers operating at ≤50 MHz bus frequency.
Does the ADM6926ABT1 include integrated Ethernet PHYs?
No, the ADM6926ABT1 integrates dual MACs but requires external 10/100 PHYs (e.g., Infineon TDA10026 or Microchip LAN8720) for physical layer connectivity. Its MII/RMII interfaces are fully compliant with IEEE 802.3u and support both 4-bit MII and 2-bit RMII modes per port.
Can the ADM6926ABT1 operate in cut-through switching mode?
No, the ADM6926ABT1 implements store-and-forward switching exclusively. All frames are fully received, CRC-checked, and buffered before forwarding. This ensures error-free inter-port transmission but introduces minimum latency of ~12 µs per hop at 100 Mbps.
Is the ADM6926ABT1 qualified for automotive applications?
No, the ADM6926ABT1 is specified for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. It lacks automotive-specific features such as enhanced ESD protection (≥8 kV HBM), extended burn-in, or fault injection test reports required for automotive ECUs.
ADM6926ABT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 128-BFQFP
- Programmable:
- Not Verified
- Protocol:
- -
- Function:
- -
- Interface:
- -
- Standards:
- -
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 115°C
- Supplier Device Package:
- PG-FQFP-128-1
- Grade:
- -
- Qualification:
- -
ADM6926ABT1 FAQ
1.How can I place an order for ADM6926ABT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6926ABT1 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 ADM6926ABT1 reliable?
The price and inventory of ADM6926ABT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6926ABT1 is usually 5 days.
3.What payment methods are accepted for ADM6926ABT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6926ABT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6926ABT1?
ADM6926ABT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6926ABT1 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 ADM6926ABT1?
For technical support, including ADM6926ABT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6926ABT1 requirements.
6.How does Aetrix verify that ADM6926ABT1 is sourced from the original manufacturer or authorized distributors?
All ADM6926ABT1 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 ADM6926ABT1 meets industry standards.
7.What is the process for return or replacement of ADM6926ABT1?
All ADM6926ABT1 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6926ABT1, 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 ADM6926ABT1 part is unused and in its original packaging.
Return procedure for ADM6926ABT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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