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Texas Instruments TL16PNP100AFN
- Part No.:
- TL16PNP100AFN
- Manufacturer:
- Texas Instruments
- Category:
- Microprocessors
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TL16PNP100AFN.pdf
- Description:
- MICROPROCESSOR CIRCUIT PQCC44
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Product details
Overview
TL16PNP100AFN from Texas Instruments is a standalone Plug-and-Play (PnP) controller IC for ISA/AT bus expansion cards, implementing PnP autoconfiguration logic for two logical I/O devices, supporting 10-bit I/O address decoding with programmable 1–16-byte block sizes, mapping interrupts to IRQ3–IRQ7 and IRQ9, and interfacing directly to ST93C56/66 EEPROMs in legacy PC systems.
For engineers reviewing the TL16PNP100AFN datasheet, TL16PNP100AFN pinout, TL16PNP100AFN application, or TL16PNP100AFN equivalent, this device serves as a dedicated ISA bus PnP configuration engine-requiring no external buffer for data/interrupt signals, enabling direct integration into industrial or embedded ISA add-in cards needing automatic resource enumeration under Windows 95–compatible BIOS environments.
Technical Context
The TL16PNP100AFN implements a hardware-based PnP autoconfiguration sequence compliant with ISA PnP specification v1.0a, using an internal LFSR key generator and serial EEPROM interface (SCLK/SCS/SIO) to read resource data structures from ST93C56/66 EEPROMs. It decodes only 10-bit I/O addresses (A9–A0) per logical device and supports no DMA functionality.
It provides two independent logical device controllers with separate chip selects (CS0/CS1), interrupt request outputs (INTR0/INTR1), and configurable interrupt routing via register 0×70. After configuration completion, it disables its EEPROM interface to allow shared access by an on-board controller, with all I/O and interrupt pins driving 24 mA sink / 12 mA source at 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Standalone ISA Plug-and-Play (PnP) configuration controller for legacy PC expansion cards |
| Logical Devices | Two independent I/O-only logical devices; no DMA support implemented |
| I/O Address Decoding | 10-bit (A9–A0) per logical device, with programmable block size: 1/2/4/8/16 bytes |
| Interrupt Mapping | Supports six outputs: IRQ3, IRQ4, IRQ5, IRQ6, IRQ7, IRQ9; configured via 0×70 register |
| EEPROM Interface | 3-state bidirectional SIO, SCLK, SCS; compatible with ST93C56 (2K) and ST93C66 (4K) |
| Supply Voltage | 4.75 V to 5.25 V; operates over 0°C to 70°C free-air temperature range |
| Input Clock | 10 MHz to 22 MHz external CLK; internally generates 0.68 MHz SCLK for EEPROM timing |
Pinout & Package
TL16PNP100AFN is packaged in a 44-pin Plastic Leaded Chip Carrier (PLCC), FN package variant. Pin functions are validated per Texas Instruments SLLS200C datasheet (Rev. September 1997).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A11 | ISA address inputs | 12-bit address bus; A0–A9 used during PnP configuration for I/O decoding |
| CS0 / CS1 | Chip select outputs | Active-low enables for logical device 0 and 1; each decodes one 10-bit I/O location |
| D0–D7 | Bidirectional data bus | 3-state I/O path between CPU and controller; drives 24 mA sink / 12 mA source |
| IOR / IOW | ISA control inputs | Direct connection to ISA bus; no buffering required for read/write strobes |
| INTR0 / INTR1 | Logical device interrupt requests | Active-high signals routed to IRQ outputs based on interrupt level register (0×70) |
| IRQ3–IRQ7, IRQ9 | Interrupt request outputs | Six 3-state outputs mapped from INTR0/INTR1; support level/edge-triggered modes |
| EEPROM / SCLK / SCS / SIO | EEPROM interface signals | 3-state bidirectional serial interface; released after configuration to enable shared EEPROM access |
| RESET | Asynchronous reset input | Clears configuration registers, resets CSN to 0×0, places device in wait-for-key state |
Key Features
| Feature | Design Value |
|---|---|
| ISA Bus Direct Interface | No external buffers needed for IOR/IOW/IRQ/Dx signals-reduces BOM count and layout complexity |
| Programmable I/O Block Size | 1/2/4/8/16-byte granularity per logical device, set via EEPROM bits [15:13] and [11:9] |
| Shared EEPROM Access | 3-state EEPROM interface releases SIO/SCS/SCLK after configuration, enabling concurrent access by another controller |
| Two Logical Device Support | Independent CS0/CS1, INTR0/INTR1, and configuration registers-allows dual-function ISA cards (e.g., UART + GPIO) |
| Windows 95 Logo Compliance Ready | Supports 16-bit I/O address decoding extension via external OR gate on SA15–SA10, per Microsoft PnP spec |
Applications
| Industrial ISA Data Acquisition Card | Legacy PC Parallel/Serial Expansion Board |
|---|---|
Use Scenario: An industrial DAQ card with analog input, digital I/O, and timer functions requires automatic resource assignment in Windows NT 4.0 environments. IC Role / Device Role / Timing Role: TL16PNP100AFN acts as the sole PnP configuration engine, enumerating two logical devices-one for ADC control (CS0), one for DIO management (CS1)-and assigning non-conflicting I/O ports and IRQs. Use Value: Eliminates manual jumper/DIP-switch configuration; ensures deterministic I/O base address and IRQ selection across diverse host BIOS implementations. |
Use Scenario: A dual-port RS-232/parallel printer card must comply with Windows 95 Plug-and-Play certification requirements. IC Role / Device Role / Timing Role: TL16PNP100AFN manages PnP enumeration of UART and parallel controller as separate logical devices, mapping INTR0→IRQ4 and INTR1→IRQ7 while decoding 16-byte I/O blocks per device. Use Value: Enables Windows 95 logo qualification via external OR gate on SA15–SA10 and EEPROM descriptor updates-no firmware changes required. |
| Embedded AT-Bus Industrial Controller | Field-Upgradeable ISA Diagnostic Module |
Use Scenario: An AT-bus-based motion controller board integrates FPGA-based servo logic and requires runtime reconfiguration without BIOS dependency. IC Role / Device Role / Timing Role: TL16PNP100AFN handles initial BIOS-driven enumeration, then releases EEPROM interface (EEPROM pin high) so FPGA can reprogram ST93C66 contents during field updates. Use Value: Enables post-deployment EEPROM reprogramming via on-board controller-supports firmware revision tracking and dynamic resource reallocation. |
Use Scenario: A field-service diagnostic module uses EEPROM-stored configuration profiles for different test equipment models. IC Role / Device Role / Timing Role: TL16PNP100AFN reads resource descriptors from ST93C66 during boot, then asserts CS0/CS1 to enable appropriate test logic; EEPROM remains accessible for profile switching. Use Value: Allows technician-selectable configurations via EEPROM rewrite-no hardware modification or card replacement needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Plug-and-Play configuration applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VT82C106 | PCI-to-ISA bridge with integrated PnP logic; supports full ISA PnP plus PCI enumeration; requires 3.3 V/5 V dual supply | Designed for PCI-based legacy adapter designs; not a drop-in replacement-requires PCB redesign and BIOS update | Select when migrating from ISA-only to PCI-hosted ISA expansion; not suitable for pure ISA slot cards. |
| SMSC FDC37C93X | Super I/O with integrated PnP controller, floppy/UART/parallel/LPT; supports 16-bit I/O decode natively; includes on-chip voltage regulators | Targets system-level I/O consolidation-not a standalone PnP controller; occupies entire ISA I/O space | Choose for new motherboard or embedded controller designs requiring multi-function integration; not for discrete expansion cards. |
Compared with VT82C106 and SMSC FDC37C93X, TL16PNP100AFN offers minimal-footprint, single-function PnP control optimized for ISA slot cards-requiring no PCI infrastructure or Super I/O complexity, making it uniquely suited for retrofitting legacy expansion boards with automatic configuration.
Availability
TL16PNP100AFN is available at Aetrix Electronics and suitable for industrial ISA data acquisition, legacy PC expansion board manufacturing, and embedded AT-bus controller development requiring stable component supply and long-term lifecycle support.
Supply support for TL16PNP100AFN 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The TL16PNP100AFN belongs to TI's legacy ISA interface product line, designed specifically to enable Plug-and-Play compliance in PC expansion cards during the Windows 95 era-prioritizing hardware-based enumeration, EEPROM interoperability, and direct ISA bus integration.
FAQ
What is the primary function of the TL16PNP100AFN in an ISA expansion card?
The TL16PNP100AFN serves as a dedicated hardware Plug-and-Play configuration controller that executes the ISA PnP autoconfiguration sequence-including card isolation, CSN assignment, EEPROM resource-data reading, and register-based I/O/interrupt setup. TL16PNP100AFN does not implement DMA logic and is strictly an I/O-focused PnP engine for legacy PC expansion cards.
Does TL16PNP100AFN support 16-bit I/O address decoding required for Windows 95 logo certification?
TL16PNP100AFN natively decodes only 10-bit I/O addresses (A9–A0). To meet Windows 95 logo requirements for 16-bit I/O decoding, an external OR gate must be added on-board to combine SA15–SA10 with TL16PNP100AFN's CS outputs, and EEPROM I/O descriptors must be updated to reflect full 16-bit addressing-details are provided in the SLLS200C datasheet Application Information section.
How does TL16PNP100AFN handle EEPROM access after configuration completes?
After completing the PnP configuration sequence, TL16PNP100AFN releases the EEPROM interface: EEPROM pin goes high (idle), SIO and SCS enter high-impedance state and are pulled down internally, and SCLK stops toggling. This allows an optional on-board controller-such as an FPGA or microcontroller-to access the same ST93C56/66 EEPROM for field updates or diagnostics without hardware contention.
Can TL16PNP100AFN be used with modern operating systems like Windows 10 or Linux?
TL16PNP100AFN was designed for ISA PnP BIOS environments of the mid-1990s (Windows 95/98/NT 4.0). Modern OSes lack native ISA PnP BIOS support and rely on ACPI or PCIe enumeration. TL16PNP100AFN may function in legacy mode on older motherboards with PnP BIOS enabled, but is not supported in contemporary platforms without custom driver/firmware intervention.
What are the key electrical characteristics of TL16PNP100AFN's output drivers?
TL16PNP100AFN's I/O and interrupt outputs (D0–D7, IRQ3–IRQ7, IRQ9) drive 24 mA sink at 0.4 V and source 12 mA at 2.4 V under 5 V supply. Input thresholds are VIH ≥ 2 V and VIL ≤ 0.8 V. The device operates within 4.75–5.25 V supply range and 0°C to 70°C ambient temperature, with clock input frequency specified from 10 MHz to 22 MHz.
TL16PNP100AFN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
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- *
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- Bulk
- Product Status:
- Active
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TL16PNP100AFN FAQ
1.How can I place an order for TL16PNP100AFN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL16PNP100AFN 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 TL16PNP100AFN reliable?
The price and inventory of TL16PNP100AFN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL16PNP100AFN is usually 5 days.
3.What payment methods are accepted for TL16PNP100AFN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL16PNP100AFN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL16PNP100AFN?
TL16PNP100AFN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL16PNP100AFN 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 TL16PNP100AFN?
For technical support, including TL16PNP100AFN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL16PNP100AFN requirements.
6.How does Aetrix verify that TL16PNP100AFN is sourced from the original manufacturer or authorized distributors?
All TL16PNP100AFN 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 TL16PNP100AFN meets industry standards.
7.What is the process for return or replacement of TL16PNP100AFN?
All TL16PNP100AFN units undergo pre-shipment inspection (PSI). If there is an issue with TL16PNP100AFN, 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 TL16PNP100AFN part is unused and in its original packaging.
Return procedure for TL16PNP100AFN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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