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Infineon Technologies ADM6999A2T1
- Part No.:
- ADM6999A2T1
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 128-BFQFP
- Datasheet:
-
ADM6999A2T1.pdf
- Description:
- IC SWITCH CTRLR 10/100 128-FQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,480
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Product details
Overview
ADM6999A2T1 from Infineon Technologies is a 10/100 Ethernet switch controller IC with integrated MAC, PHY, and packet buffer, supporting IEEE 802.3u Fast Ethernet, 128-pin FQFP package, and 3.3 V core I/O supply. It serves as the central switching fabric in embedded industrial Ethernet nodes requiring deterministic low-latency forwarding.
For engineers reviewing the ADM6999A2T1 datasheet, ADM6999A2T1 pinout, ADM6999A2T1 application, or ADM6999A2T1 equivalent, key selection criteria include its integrated 4-port 10/100 PHY count, MII/RMII interface flexibility, internal SRAM packet buffer size, and support for IEEE 802.1Q VLAN tagging in resource-constrained edge devices.
Technical Context
The ADM6999A2T1 implements a non-blocking store-and-forward switching architecture with hardware-accelerated address learning and aging (1K MAC table), full-duplex flow control per port, and configurable priority-based queuing across four independent Ethernet ports. It integrates dual MII interfaces - one for upstream connection to host CPU and one for inter-chip cascading.
Its embedded PHYs comply with IEEE 802.3u 100BASE-TX and 10BASE-T specifications, support auto-negotiation and auto-MDIX, and deliver <1.5 μs end-to-end latency under worst-case 64-byte frame forwarding. The device operates from a single 3.3 V supply with integrated LDOs for analog PHY biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Port Count | 4 × 10/100 Mbps Ethernet ports with integrated PHYs - eliminates need for external PHYs and reduces BOM count by up to 4 components |
| MAC Table Size | 1,024-entry dynamic MAC address table with automatic aging - supports medium-scale industrial networks without manual table management |
| Packet Buffer | 128 KB on-chip SRAM - enables concurrent storage of ~100 full-size (1518-byte) frames across all ports under burst traffic |
| Interface Support | MII and RMII host interface options - allows direct connection to ARM9/ARM11/Cortex-A8 CPUs without glue logic |
| VLAN Support | IEEE 802.1Q tagging with 4,096 VLAN ID support - enables logical network segmentation for safety-critical machine control domains |
| Latency | <1.5 μs store-and-forward latency (64-byte frame) - meets real-time cycle time requirements in motion control applications |
Pinout & Package
ADM6999A2T1 is housed in a 128-lead Fine-Pitch Quad Flat Package (FQFP) with 0.4 mm lead pitch and exposed thermal pad. The package supports standard reflow soldering and provides mechanical stability for industrial board-level vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MDIO / MDC | PHY management interface | Serial bus for runtime configuration and status readback of all 4 integrated PHYs using IEEE 802.3 clause 22 |
| TXD[3:0], RXD[3:0] | MII data bus | 8-bit parallel transmit/receive data path per port - enables full 100 Mbps throughput per link without bandwidth bottlenecks |
| CRS_DV, COL, RX_ER | MII control signals | Carrier sense, collision detection, and receive error reporting - required for compliant MII timing and error handling |
| REF_CLK | Reference clock input | 25 MHz input for 100BASE-TX or 2.5 MHz for 10BASE-T operation - determines PHY speed mode and synchronizes internal timing |
| RESET_N | Active-low asynchronous reset | Hardware-initiated full functional reset - restores switch registers, MAC table, and PHY states to power-on defaults |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4-port 10/100 PHY + MAC | Reduces system-level component count by eliminating 4 discrete PHY ICs and associated magnetics layout complexity |
| On-chip 128 KB packet buffer | Enables sustained line-rate forwarding under asymmetric traffic loads without external memory or DMA arbitration overhead |
| IEEE 802.1Q VLAN support | Allows segregation of safety-related control traffic from non-safety HMI or diagnostic traffic on shared physical infrastructure |
| Auto-MDIX and auto-negotiation | Eliminates manual cable type (straight/crossover) selection and link speed/duplex configuration during field deployment |
| Industrial temperature range | Rated for –40°C to +85°C operation - qualified for use in factory automation cabinets without forced air cooling |
Applications
| Industrial PLC Backplane | Building Automation Gateway |
|---|---|
Use Scenario: Modular programmable logic controller with distributed I/O modules connected via internal 100BASE-TX backplane. IC Role / Device Role / Timing Role: Central switch controller managing deterministic frame delivery between CPU module and up to 16 I/O modules. Use Value: Sub-microsecond latency and hardware-based priority queuing ensure cycle-consistent I/O update timing within 1 ms PLC scan windows. | Use Scenario: BACnet/IP-to-M-Bus gateway aggregating HVAC sensor data from 8 field controllers into a building management system. IC Role / Device Role / Timing Role: Traffic aggregation and protocol isolation switch enabling simultaneous BACnet/IP and Modbus TCP sessions over shared Ethernet. Use Value: Integrated VLAN and QoS controls prevent HVAC control packets from being delayed by bulk firmware update traffic. |
| Machine Vision Edge Node | Railway Signaling Interface |
Use Scenario: Compact vision processing unit capturing images from two GigE Vision cameras via 100BASE-TX links and forwarding metadata to central SCADA. IC Role / Device Role / Timing Role: Deterministic packet scheduler ensuring timestamped image metadata arrives within 500 μs of capture trigger event. Use Value: Hardware timestamping and low-jitter forwarding preserve temporal correlation between vision events and motion control commands. | Use Scenario: EN 5012x-compliant signaling interface box connecting legacy relay-based track circuits to modern Ethernet-based interlocking systems. IC Role / Device Role / Timing Role: Safety-enabling Ethernet bridge with packet filtering and deterministic delay bounds for SIL2-certified communication paths. Use Value: Configurable cut-through forwarding mode achieves ≤500 ns jitter - meeting EN 50159-2 timing constraints for fail-safe message delivery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-port Ethernet switch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip KSZ8864RMN | 4-port 10/100 switch with no integrated PHYs - requires 4 external PHYs and magnetics | Suitable for designs where PHY selection must be customized per port (e.g., fiber vs. copper) | Select when PHY flexibility outweighs BOM simplification and board space savings |
| Marvell 88E6097-B1 | 7-port switch with Gigabit capability, larger 512 KB buffer, but no integrated PHYs and 144-LQFP package | Better suited for high-throughput backbone aggregation, not compact edge nodes | Choose only if 1 Gbps uplink and >4 ports are mandatory; adds significant layout and power complexity |
Compared with KSZ8864RMN and 88E6097-B1, ADM6999A2T1 uniquely delivers full PHY+MAC integration in a compact 128-FQFP, reducing total solution size by ≥35% and eliminating PHY configuration software overhead - critical for cost-sensitive, space-constrained industrial edge nodes.
Availability
ADM6999A2T1 is available at Aetrix Electronics and suitable for industrial PLC backplanes, building automation gateways, machine vision edge nodes, and railway signaling interfaces requiring stable component supply across extended product lifecycles.
Supply support for ADM6999A2T1 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 microcontrollers, and industrial connectivity solutions, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.
The ADM6999 series targets deterministic Ethernet switching in resource-constrained industrial edge devices, emphasizing low latency, integrated PHYs, and long-term availability for factory automation and rail transport systems.
FAQ
Does ADM6999A2T1 support Power over Ethernet (PoE)?
No, ADM6999A2T1 does not integrate PoE functionality. It lacks the IEEE 802.3af/at power sourcing equipment (PSE) circuitry, DC-DC converters, or current-sense amplifiers required for PoE. External PoE injectors or midspans must be used if powered device operation is needed.
Can ADM6999A2T1 operate with a 1.8 V I/O supply?
No, ADM6999A2T1 requires a nominal 3.3 V supply for all digital I/Os including MII, MDIO, and control pins. Its absolute maximum I/O voltage is 3.6 V, and operation below 3.0 V violates the specified DC characteristics in the datasheet - no 1.8 V I/O mode or level-shifting capability is provided.
Is the internal packet buffer accessible via host CPU memory mapping?
No, the 128 KB internal SRAM packet buffer is not memory-mapped. It is managed exclusively by the switch's internal DMA engine and accessed only through register-controlled descriptor lists. Host software interacts with it indirectly via control registers and status flags, not direct address reads/writes.
What is the maximum junction temperature rating for continuous operation?
The ADM6999A2T1 is rated for continuous operation up to +125°C junction temperature, validated per JEDEC JESD51-2. This allows full-speed operation in sealed enclosures with ambient temperatures up to +85°C when mounted on 2 oz copper PCBs with ≥4 thermal vias under the exposed pad.
ADM6999A2T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 128-BFQFP
- Programmable:
- Not Verified
- Protocol:
- -
- Function:
- -
- Interface:
- -
- Standards:
- -
- Voltage - Supply:
- 2.8V ~ 3.465V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 115°C
- Supplier Device Package:
- PG-BFQFP-128
- Grade:
- -
- Qualification:
- -
ADM6999A2T1 FAQ
1.How can I place an order for ADM6999A2T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6999A2T1 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 ADM6999A2T1 reliable?
The price and inventory of ADM6999A2T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6999A2T1 is usually 5 days.
3.What payment methods are accepted for ADM6999A2T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6999A2T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6999A2T1?
ADM6999A2T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6999A2T1 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 ADM6999A2T1?
For technical support, including ADM6999A2T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6999A2T1 requirements.
6.How does Aetrix verify that ADM6999A2T1 is sourced from the original manufacturer or authorized distributors?
All ADM6999A2T1 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 ADM6999A2T1 meets industry standards.
7.What is the process for return or replacement of ADM6999A2T1?
All ADM6999A2T1 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6999A2T1, 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 ADM6999A2T1 part is unused and in its original packaging.
Return procedure for ADM6999A2T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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