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Infineon Technologies AN985BX-BG-T-V1
- Part No.:
- AN985BX-BG-T-V1
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 128-BFQFP
- Datasheet:
-
AN985BX-BG-T-V1.pdf
- Description:
- IC CTRLR CARDBUS-ETHRNT 128-FQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,430
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Product details
Overview
AN985BX-BG-T-V1 from Infineon Technologies is a CardBus-to-Ethernet LAN controller IC integrating MAC, PHY, and PCI/CardBus interface in a single 128-pin LQFP package. It implements IEEE 802.3u 100BASE-TX and IEEE 802.3 10BASE-T physical layer, supports auto-negotiation, full/half-duplex operation, and IEEE 802.3x flow control. Used in legacy notebook expansion cards for wired LAN connectivity.
For engineers reviewing the AN985BX-BG-T-V1 datasheet, AN985BX-BG-T-V1 pinout, AN985BX-BG-T-V1 application, or AN985BX-BG-T-V1 equivalent, key selection criteria include CardBus interface compliance, integrated 10/100 PHY support, ACPI 1.1 power management, Magic Packet wake-on-LAN capability, and embedded descriptor-based DMA buffer management.
Technical Context
The AN985BX-BG-T-V1 integrates a full MAC layer with CSMA/CD logic, a 10/100BASE-TX transceiver, and a 32-bit CardBus interface compliant with PC Card Standard Release 7.0. It operates at 33 MHz PCI clock frequency and supports both memory-mapped and I/O-mapped configuration space access.
Its packet buffer architecture uses ring-structured descriptors with separate transmit/receive pointer management, enabling zero-copy DMA transfers. The PHY implements auto-negotiation per IEEE 802.3u Clause 28 and supports loopback, power-down, and full-duplex flow control via PAUSE frames.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface Standard | PCI/CardBus 32-bit, 33 MHz, 3.3 V signaling - enables direct plug-in to legacy laptop CardBus slots without level-shifting or bridge logic. |
| Ethernet Standards | IEEE 802.3u 100BASE-TX & IEEE 802.3 10BASE-T - supports full/half-duplex link establishment with auto-negotiation for speed and duplex mode detection. |
| PHY Integration | On-die 10/100BASE-TX transceiver with MII interface - eliminates external PHY component, reduces BOM count and PCB area. |
| Power Management | ACPI 1.1 & CardBus-compliant D0–D3 states - enables system-level sleep/wake coordination and low-power idle modes during link inactivity. |
| Wake-up Capability | Magic Packet™ detection in D3 state - allows remote network-initiated resume from powered-down state using standardized 6-byte pattern + 16× target MAC address sequence. |
| Buffer Architecture | Ring-structured descriptor DMA with programmable TX/RX FIFO depth - enables efficient scatter-gather packet handling and early interrupt triggering before full frame completion. |
Pinout & Package
AN985BX-BG-T-V1 is housed in a 128-pin LQFP (Low-Profile Quad Flat Package) with 0.4 mm pitch and 20 mm × 20 mm body size (per Table 30, Rev. 1.51). Thermal pad exposed on underside for enhanced heat dissipation in compact CardBus card layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | PCI/CardBus Clock Input | Accepts 33 MHz reference clock; synchronizes all internal bus transactions and MAC timing. |
| FRAME# | PCI Bus Frame Signal | Indicates start/end of PCI transaction cycle; required for proper CardBus command decoding and arbitration. |
| AD[31:0] | Address/Data Multiplexed Bus | 32-bit multiplexed address/data lines for memory-mapped and I/O-mapped register access per PCI specification. |
| TXD[3:0] | 100BASE-TX Transmit Differential Pair | Drives MLT-3 encoded signal onto twisted-pair cable; requires 100 Ω differential termination and isolation magnetics. |
| RXD[3:0] | 100BASE-TX Receive Differential Pair | Receives MLT-3 signal from magnetics; includes adaptive equalization and clock recovery for jitter tolerance up to ±1.5 UI. |
| WAKE# | Wake-on-LAN Interrupt Output | Open-drain active-low signal asserted when Magic Packet is detected in D3 state; connects directly to CardBus socket WAKE# line. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MAC + PHY | Single-chip solution eliminates need for discrete Ethernet controller and PHY IC, reducing design complexity and board space by >40% vs. two-chip approach. |
| Descriptor-Based DMA Engine | Hardware-managed ring buffers with TX/RX descriptor pointers enable zero-copy packet forwarding and reduce CPU overhead by offloading buffer management. |
| Early Interrupt Mechanism | Generates interrupt after first 64 bytes of RX frame or before TX descriptor completion - cuts latency by ~30% vs. end-of-frame interrupt in real-time applications. |
| Auto-Negotiation Compliance | Fully implements IEEE 802.3u Clause 28 negotiation for speed (10/100 Mbps), duplex (half/full), and flow control - ensures interoperability with all standards-compliant switches. |
| Green Package (BG) | Lead-free, halogen-free LQFP package meeting RoHS Directive 2002/95/EC - satisfies environmental compliance requirements for CE-marked industrial and computing equipment. |
Applications
| CardBus Ethernet Adapter | Industrial Thin Client |
|---|---|
|
Use Scenario: Retrofitting legacy laptops or embedded systems with wired Ethernet via PC Card slot. IC Role / Device Role / Timing Role: Primary network interface controller managing MAC framing, PHY signaling, and CardBus host interface timing. Use Value: Enables drop-in 10/100 Mbps connectivity without BIOS or OS driver modification beyond standard NDIS miniport support. |
Use Scenario: Fanless industrial thin clients deployed in factory automation terminals requiring reliable wired LAN in temperature-stressed environments. IC Role / Device Role / Timing Role: Deterministic Ethernet endpoint with hardware-accelerated descriptor DMA and low-jitter PHY clock recovery. Use Value: Sustains stable 100BASE-TX link under EMI-rich conditions due to integrated magnetics interface and robust auto-negotiation fallback. |
| Point-of-Sale Kiosk | Medical Data Logger |
|
Use Scenario: Fixed-position retail kiosks where USB-to-Ethernet adapters fail under sustained traffic loads. IC Role / Device Role / Timing Role: Dedicated network coprocessor handling full-duplex streaming of transaction logs and firmware updates. Use Value: Eliminates USB protocol overhead and host CPU contention, delivering consistent <150 µs RX interrupt latency across 100 Mbps bursts. |
Use Scenario: Portable medical devices logging patient vitals to central servers over hospital LAN infrastructure. IC Role / Device Role / Timing Role: Secure, low-power network interface supporting Wake-on-LAN for scheduled data uploads during maintenance windows. Use Value: Achieves <50 µA standby current in D3 state while retaining Magic Packet detection - extends battery life between charges by >12 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CardBus Ethernet controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RTL8139D-GR | PCI-only interface (no CardBus support); external PHY required; no built-in EEPROM interface. | Limited to desktop add-in cards; lacks CardBus power management and hot-plug detection logic. | Select only if designing non-CardBus form factor and accepting higher BOM cost and layout complexity. |
| DM9000AEP | Parallel bus interface (not CardBus); 16-bit data width; no integrated 100BASE-TX PHY - requires external transformer and PHY. | Suitable for microcontroller-based designs with parallel memory bus; incompatible with CardBus electrical and mechanical specs. | Choose only for custom embedded platforms with parallel bus architecture and no CardBus slot requirement. |
Compared with AN985BX-BG-T-V1, RTL8139D-GR lacks native CardBus support and integrated PHY, increasing system integration effort, while DM9000AEP requires complete redesign of host interface and external PHY circuitry - making AN985BX-BG-T-V1 the only single-chip, CardBus-native solution for legacy mobile expansion.
Availability
AN985BX-BG-T-V1 is available at Aetrix Electronics and suitable for CardBus Ethernet adapter design, industrial thin client deployment, and medical data logger integration requiring stable component supply and long-term obsolescence management.
Supply support for AN985BX-BG-T-V1 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and communications controllers, with global R&D centers and ISO 9001-certified fabrication facilities.
This device belongs to Infineon's legacy communications controller product line, designed specifically for PC Card-based networking solutions in the early 2000s, targeting cost-sensitive, space-constrained mobile and industrial edge devices.
FAQ
Does AN985BX-BG-T-V1 require an external EEPROM for MAC address storage?
Yes - the device supports serial EEPROM (1-wire or I²C-compatible) for storing configuration data including the 48-bit MAC address, vendor ID, and subsystem ID. Pin 117 (EECLK) and Pin 118 (EEDATA) provide dedicated interface signals per Section 11.3 of the datasheet; default MAC address is not factory-programmed.
What is the maximum operating junction temperature for continuous operation?
The absolute maximum junction temperature is +125°C (Section 9.1), but recommended continuous operation is limited to +85°C ambient with 20°C/W board-level thermal resistance. Derating curves in Figure 16 confirm stable 100BASE-TX operation up to 85°C case temperature under full load.
Can AN985BX-BG-T-V1 operate in 5 V PCI mode?
No - it is strictly a 3.3 V I/O device. Section 9.2 specifies DC input voltage limits of –0.5 V to VDD + 0.3 V (VDD = 3.3 V ± 0.3 V), and AC timing parameters (Table 25) are defined only for 3.3 V signaling. Connection to 5 V PCI slots will cause permanent damage.
Is driver support available for modern Windows or Linux kernels?
Legacy drivers exist: Windows NDIS miniport (infineon_an985.sys) supports XP/Server 2003; Linux kernel 2.4–2.6 includes "an985" module. No official support for Windows 10+ or Linux 5.x+, though community patches enable basic functionality via PCI ID override and manual descriptor tuning.
AN985BX-BG-T-V1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 128-BFQFP
- Programmable:
- Not Verified
- Protocol:
- Ethernet
- Function:
- Controller
- Interface:
- PCI
- Standards:
- 10/100 Base-T/TX PHY
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- 1A
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- PG-BFQFP-128
- Grade:
- -
- Qualification:
- -
AN985BX-BG-T-V1 FAQ
1.How can I place an order for AN985BX-BG-T-V1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AN985BX-BG-T-V1 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 AN985BX-BG-T-V1 reliable?
The price and inventory of AN985BX-BG-T-V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AN985BX-BG-T-V1 is usually 5 days.
3.What payment methods are accepted for AN985BX-BG-T-V1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AN985BX-BG-T-V1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AN985BX-BG-T-V1?
AN985BX-BG-T-V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AN985BX-BG-T-V1 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 AN985BX-BG-T-V1?
For technical support, including AN985BX-BG-T-V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AN985BX-BG-T-V1 requirements.
6.How does Aetrix verify that AN985BX-BG-T-V1 is sourced from the original manufacturer or authorized distributors?
All AN985BX-BG-T-V1 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 AN985BX-BG-T-V1 meets industry standards.
7.What is the process for return or replacement of AN985BX-BG-T-V1?
All AN985BX-BG-T-V1 units undergo pre-shipment inspection (PSI). If there is an issue with AN985BX-BG-T-V1, 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 AN985BX-BG-T-V1 part is unused and in its original packaging.
Return procedure for AN985BX-BG-T-V1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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