TL16PNP200A STANDALONE PLUG-AND-PLAY (PnP) CONTROLLER

SLLS274A- APRIL1997 - REVISED MAY 1997

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features

• PnP Card Autoconfiguration Sequence Compliant
• Satisfies All Requirements for Qualifying for the Windows 95^TM Logo
• Supports up to Five Logical Devices
• 24-Bit Memory Address Decoding and 16-Bit I/O Address Decoding With Programmable (1, 2, 4, 8, 16, 32, 64) I/O Block Size
• Device Interrupt Mapping to Any of the 11 Interrupt Request (IRQ) Signals on Industry Standard Architecture (ISA) Bus
• Direct Memory Access (DMA) Support for Two Logical Devices with Configurable DMA Channel Connection
• Configurable OEN\ Signals That Can Be Used to Enabled Logical Device Transceivers
• Simple 3-Terminal Interface to Serial EEPROM 2K/4K ST93C56/66 or Equivalent for Resource Data Storage and Power-Up Defaults, As Well As General Board-Specific Data
• Default Configuration Loading and Activation Upon Power-up for Non-PnP Systems
• Two Modes of Operation That Satisfy a Wide Range of Applications
• Direct Connection to ISA/AT Bus Without Need for Buffers
• 5-V Power Supply Operation
• Available in 80-pin PQFP

  Windows 95 is a trademark of Microsoft Corporation .

description

The TL16PNP200A is an Industry Standard Architecture (ISA) plug-and-play (PnP) controller that provides autoconfiguration capability to ISA cards according to the ISA PnP 1.0a specification. It interfaces to a serial EEPROM, where card resource requirements and power-up defaults are stored. On power up, the controller loads the default configuration from the EEPROM making it ready for operation (non-PnP systems) or to be configured by the PnP configuration process (PnP-capable systems). During configuration mode, the PnP autoconfiguration process reads the card resource requirements, configures the card by writing to the TL16PNP200A configuration registers, activates the device, and removes it from the configuration mode. Thereafter, the TL16PNP200A routes all ISA transactions between the card and the ISA bus. The TL16PNP200A operates in one of two modes. In mode 0, the device supports two logical devices with memory, I/O, interrupt, and DMA resources for each device. In mode 1, the device supports five logical devices with I/O and interrupt resources for all logical devices and DMA resources for two of the five logical devices; there is no memory support in mode 1. The TL16PNP200A provides interface signals to allow on-board logic access to the serial EEPROM.

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(c) Copyright 1998 Texas Instruments Incorporated. All rights reserved.
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