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Texas Instruments TL16PNP100APT
- Part No.:
- TL16PNP100APT
- Manufacturer:
- Texas Instruments
- Category:
- Microprocessors
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TL16PNP100APT.pdf
- Description:
- MICROPROCESSOR CIRCUIT
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Product details
Overview
TL16PNP100APT 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 address decoding with programmable 1–16-byte I/O block sizes, mapping interrupts to IRQ3–IRQ7 and IRQ9, and interfacing directly with ST93C56/66 EEPROMs without external buffering.
For engineers reviewing the TL16PNP100APT datasheet, TL16PNP100APT pinout, TL16PNP100APT application, or TL16PNP100APT equivalent, this device serves as a legacy ISA bus PnP configuration controller-requiring attention to EEPROM resource structure layout, 10-bit I/O address decode limitations, interrupt routing register programming, and compatibility with Windows 95 PnP BIOS initialization sequences.
Technical Context
The TL16PNP100APT implements a hardware-based PnP autoconfiguration engine compliant with the ISA PnP specification, executing serial isolation, CSN assignment, and resource-data readout from an external ST93C56/66 EEPROM. It supports exactly two logical devices, each with independent I/O base address (0×60/0×61), interrupt level (0×70), and interrupt type (0×71) configuration registers.
It provides no DMA support (registers 0×74/0×75 return fixed value 4), disables its EEPROM interface after configuration to allow shared access, and generates SCLK at 0.68 MHz by dividing a 22-MHz input clock. Its 10-bit address decoder operates on A9–A0 with block-size-dependent address bit masking (e.g., 16-byte mode uses A9–A4).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Standalone ISA bus Plug-and-Play (PnP) configuration controller for expansion cards |
| Logical Devices | Two independent I/O logical devices; no DMA support implemented |
| I/O Address Decode | 10-bit (A9–A0); programmable block size: 1, 2, 4, 8, or 16 bytes |
| Interrupt Outputs | Six active-high outputs: IRQ3, IRQ4, IRQ5, IRQ6, IRQ7, IRQ9 |
| 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 at 0°C to 70°C ambient temperature |
| Input Clock | 22 MHz external CLK; internally divided to generate 0.68 MHz SCLK for EEPROM |
Pinout & Package
TL16PNP100APT is available in a 44-pin Plastic Leaded Chip Carrier (PLCC, FN package) and a 48-pin Thin Quad Flat Package (TQFP, PT package). Pin functions are identical across packages except for NC (no internal connection) terminals and minor pin relocations; both packages support full functional operation on ISA bus systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A11 | ISA address inputs | 12-bit address bus; only A0–A9 used during PnP configuration and I/O decode |
| 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 for configuration register access and status/data exchange with CPU |
| IOR / IOW | ISA control inputs | Direct connection to ISA bus read/write strobes; no buffering required |
| INTR0 / INTR1 | Logical device interrupt inputs | Active-high signals routed to IRQx outputs based on 0×70 register setting |
| EEPROM | EEPROM interface enable | 3-state bidirectional signal; low = TL16PNP100APT accessing EEPROM; high = idle/shared mode |
| SCLK / SCS / SIO | Serial EEPROM interface | 3-state outputs/inputs synchronized to internal 0.68 MHz clock for ST93C56/66 communication |
| RESET | Asynchronous reset input | High-active; clears CSN, resets configuration registers to power-up values, enters wait-for-key state |
Key Features
| Feature | Design Value |
|---|---|
| Plug-and-Play Compliance | Fully implements ISA PnP autoconfiguration sequence: isolation, CSN assignment, resource-data read, and register-based activation |
| Dual Logical Device Support | Independent configuration registers per device (I/O base, IRQ level/type), enabling two distinct I/O peripherals on one card |
| Programmable I/O Block Size | Configurable 1–16 byte decode window per logical device via EEPROM bits [15:13] and [11:9] |
| Shared EEPROM Interface | 3-state SIO/SCS/SCLK and open-drain EEPROM terminal allow post-configuration access by another on-board controller |
| Direct ISA Bus Integration | No external buffers needed for D0–D7, IOR, IOW, IRQx, or A0–A11; fully compatible with standard ISA/AT timing |
Applications
| ISA Expansion Card Configuration | Legacy PC Peripheral Enablement |
|---|---|
Use Scenario: Adding new I/O functionality (e.g., serial/parallel ports, data acquisition) to ISA-based industrial PCs or embedded AT systems. IC Role / Device Role / Timing Role: TL16PNP100APT acts as the PnP configuration manager-reading resource descriptors from EEPROM, assigning I/O addresses and IRQs, and enabling logical devices onto the ISA bus. Use Value: Eliminates manual jumper/DIP-switch configuration; enables automatic resource allocation by Windows 95/98 PnP BIOS during boot. |
Use Scenario: Upgrading legacy test equipment or medical devices with Windows-compatible plug-and-play capability without redesigning core logic. IC Role / Device Role / Timing Role: TL16PNP100APT serves as a drop-in PnP wrapper-translating static hardware resources into dynamic PnP-compliant descriptors readable by host BIOS. Use Value: Achieves Windows 95 logo compliance using external OR-gate logic for 16-bit address decode extension while retaining existing 10-bit peripheral design. |
| EEPROM-Based Resource Management | Multi-Device ISA Board Control |
Use Scenario: Storing and retrieving configurable I/O port ranges, interrupt assignments, and device capabilities in field-upgradable expansion cards. IC Role / Device Role / Timing Role: TL16PNP100APT functions as EEPROM master during power-up-sequentially reading 32+ bytes of resource data (I/O descriptors, IRQ settings) before releasing bus control. Use Value: Enables OEMs to program unique resource configurations per board variant using standard EEPROM programmers-no firmware changes required. |
Use Scenario: Managing two independent peripherals (e.g., dual UARTs or a UART + GPIO controller) on a single ISA add-in card. IC Role / Device Role / Timing Role: TL16PNP100APT provides separate CS0/CS1 enables and INTR0/INTR1 inputs-allowing independent addressing, interrupt routing, and activation of each peripheral. Use Value: Reduces component count vs. discrete configuration logic; ensures deterministic arbitration-free I/O access for co-located devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PnP configuration controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL16C752BPT | UART with integrated PnP controller; dual-channel, 16C752 core; includes FIFO and modem control logic | Designed for serial port applications only; not a general-purpose PnP wrapper for arbitrary peripherals | Select when adding PnP-compliant RS-232/422 functionality-not for generic I/O device enablement |
| PC87306VLA | Super I/O controller with PnP logic, integrated keyboard controller, RTC, and floppy disk interface; 100-pin LQFP | Monolithic solution for full motherboard I/O; not pin-compatible and requires different EEPROM structure | Choose for new designs needing integrated legacy I/O-not as a replacement for discrete PnP enablement on expansion cards |
Compared with TL16PNP100APT, TL16C752BPT embeds PnP within a UART function and lacks standalone I/O device flexibility, while PC87306VLA integrates PnP into a full Super I/O but requires system-level redesign-neither offers direct functional or pin-for-pin equivalence for ISA expansion card autoconfiguration.
Availability
TL16PNP100APT is available at Aetrix Electronics and suitable for industrial PC upgrades, legacy test equipment modernization, ISA-based embedded controllers, and Windows 95/98 PnP compliance retrofits requiring stable component supply and long-term obsolescence management.
Supply support for TL16PNP100APT 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 technologies with broad industrial, automotive, and computing product lines.
The TL16PNP100APT belongs to TI's legacy ISA interface and PnP controller family, designed specifically to enable Windows-compatible autoconfiguration for add-in cards in PC/AT architecture systems during the mid-1990s transition to plug-and-play computing.
FAQ
What is the primary function of the TL16PNP100APT in an ISA expansion card?
The TL16PNP100APT serves as a dedicated Plug-and-Play configuration controller that executes the ISA PnP autoconfiguration sequence-performing serial isolation, card-select number (CSN) assignment, reading resource data from an ST93C56/66 EEPROM, and programming I/O base addresses and interrupt levels for up to two logical devices. It enables automatic BIOS-driven resource allocation without manual DIP switches or jumpers, making it essential for Windows 95–compliant ISA cards.
Does the TL16PNP100APT support DMA functionality?
No, the TL16PNP100APT does not support DMA. Its PnP logical device configuration registers 0×74 and 0×75 are read-only and return a fixed value of 4, explicitly indicating "DMA not supported." The device is designed exclusively for I/O-mapped peripheral enablement and lacks DMA channel selection, request, or acknowledge logic-making it suitable only for non-DMA ISA peripherals like UARTs, parallel ports, or GPIO expanders.
How does the TL16PNP100APT interface with the ST93C56/66 EEPROM?
The TL16PNP100APT interfaces with the ST93C56/66 EEPROM via three 3-state signals-SCLK (0.68 MHz serial clock), SCS (chip select), and SIO (bidirectional data)-plus the open-drain EEPROM terminal that controls bus ownership. During configuration, TL16PNP100APT asserts EEPROM low to gain exclusive access; upon completion, it releases EEPROM (pulling it high), placing SCLK/SCS/SIO in high-impedance states so another controller can use the same EEPROM-enabling shared resource storage on multi-controller boards.
Can the TL16PNP100APT decode 16-bit I/O addresses for Windows 95 logo compliance?
The TL16PNP100APT natively decodes only 10-bit I/O addresses (A9–A0). To meet Windows 95 logo requirements for 16-bit decode, external logic (e.g., an OR gate monitoring SA15–SA10 and SAEN) must be added to the board. The EEPROM I/O descriptor must then be programmed to declare full 16-bit decode capability (bit 0 = 1), while ensuring upper address bits remain constant-so the TL16PNP100APT's native 10-bit window maps correctly within the extended range defined by the gate.
What are the key timing constraints for TL16PNP100APT's ISA bus interface?
The TL16PNP100APT requires minimum IOW pulse width of 2 clock periods and IOR pulse width of 3 clock periods (with CLK = 22 MHz), plus strict setup/hold times: 15 ns data setup before IOW↑, 5 ns data hold after IOW↑, and 20 ns address hold after IOR↑. Propagation delays include ≤500 ns from SCLK high to output valid (tpd2) and ≤15 ns from INTR↑ to IRQ↑ (td7). These ensure reliable handshake with standard ISA bus cycles without added wait states.
TL16PNP100APT Specifications
- Product attributes
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- Manufacturer:
- Texas Instruments
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- *
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- Bulk
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- Active
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TL16PNP100APT FAQ
1.How can I place an order for TL16PNP100APT through Aetrix?
Please submit a Request for Quotation (RFQ) for TL16PNP100APT 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 TL16PNP100APT reliable?
The price and inventory of TL16PNP100APT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL16PNP100APT is usually 5 days.
3.What payment methods are accepted for TL16PNP100APT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL16PNP100APT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL16PNP100APT?
TL16PNP100APT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL16PNP100APT 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 TL16PNP100APT?
For technical support, including TL16PNP100APT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL16PNP100APT requirements.
6.How does Aetrix verify that TL16PNP100APT is sourced from the original manufacturer or authorized distributors?
All TL16PNP100APT 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 TL16PNP100APT meets industry standards.
7.What is the process for return or replacement of TL16PNP100APT?
All TL16PNP100APT units undergo pre-shipment inspection (PSI). If there is an issue with TL16PNP100APT, 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 TL16PNP100APT part is unused and in its original packaging.
Return procedure for TL16PNP100APT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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