W83791SD - Brand New Winbond Electronics IC Chips
In Stock:18654 ,Ready for Immediate Shipping
New
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In Stock:
18654,
Ready for Immediate Shipping
Brand:Winbond Electronics
Category:IC Chips
Chipdatas Part No.:CD91-W83791SD
Manufacturer Part No.:W83791SD
Datecode:09+
Package:QFP-48
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Description
The W83791SD is an advanced version of Winbond's popular VL-IDE interface chip, the W83759. It retains all the features and compatibility of the W83759 while incorporating new features to meet Enhanced IDE, SFF-8011, ATA-2, and Fast-ATA specifications. This chip is designed for IDE hard disk operation and is compatible with the VESA VL-Bus 2.0 specification for PC local bus devices.
Specifications and features
- Pin-to-pin backward compatible with W83759 VL-IDE Interface chip
- VESA VL-Bus Rev 2.0 compatible, connects directly to local bus and four IDE drives
- Direct interface to various ANSI ATA/ATA-2/FAST ATA/IDE-2/Enhanced IDE drives
- Supports 32 and 16-bit data transfer
- Fully software programmable for command active/recovery time and address setup, data hold time
- Built-in VL-Bus to 16-bit IO data buffer for special applications
- Fully supports Enhanced IDE features, including Fast PIO, Mode 3/4, IORDY flow control, prefetch control
- Supports dual channels to allow up to four drives or non-disk devices (ATAPI CD-ROM and tape drives)
- Pipeline pre-fetched reads and posted writes for concurrent disk and host operations
- Independent access timing for all drives (primary/secondary and master/slave)
- All Enhanced IDE new features may be disabled/enabled via driver or power-on setting by per drive selectability
- ATA/Mode 0-4 PIO speed may be set as default timing of each drive via power-on jumper setting
- Supports slave DMA mode protocol (reserved)
- Supports auto power-down, standby, suspend APM power management state for green PCs
- Primary and secondary channel can be independently enabled/disabled by software or jumper setting
- Supports drivers for DOS, Windows, OS/2, UNIX, and Netware
- Packaged in 100-pin QFP
Application Scenarios
The W83791SD chip is commonly used in electronic devices that require support for IDE hard disk operation. It can be used in various applications, including PCs, servers, and other devices that require IDE connectivity for storage devices.
Comparison
Advantages- Compatibility with W83759 VL-IDE Interface chip
- Supports various ANSI ATA/ATA-2/FAST ATA/IDE-2/Enhanced IDE drives
- Flexible software programmability
- Supports dual channels for multiple drives or non-disk devices
- Fully supports Enhanced IDE features
- Supports auto power-down, standby, and suspend APM power management state
- Supports drivers for multiple operating systems
Disadvantages- Reserved slave DMA mode protocol
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Datasheet
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Shopping guide
Delivery period:
- - Will ship out in 2-3 days
- - DHL Express: 3-7 business days
- - DHL eCommerce: 12-22 business days
- - FedEx International Priority: 3-7 business days
- - EMS: 10-15 business days
Shipping fee:
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Shipping option:
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How to Buy:
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Additional Information
- Datasheet: Download W83791SD
- Chipdatas Part: CD91-W83791SD
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/14 03:59 +0800
Refund
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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