Description:

82353 Advanced Data Path Device (ADP):

Note: There are 2 of these per-system and are only used in DT mode.

The 82353 is a highly integrated data path device. It is used in conjunction with the 82359 DRAM controller to implement a high performance dual ported memory controller. Each 82353 is 16-bit slice. Multiple 82353s can be used for those systems which have 32 or 64 bit data busses. The memory interface of the 82353 is very flexible in that it can interface to either 16-, 32-, or 64-bit memory array to a 16-bit Host and System Bus. When using two 82353s in parallel, the resultant 128-bit memory bus allows for i486 bursts to complete in 0 wait state. Other features include an integrated posted write latch, internal parity generation/checking logic, and integrated byte assembly/disassembly logic.

Features:

• Dual Port Architecture Allows Host to Access Memory without incurring EISA Arbitration
• Provides Optimal i486 Burst Performance
• High Performance, Flexible Memory Support:
  • Designed as a 16-Bit Slice which Interfaces 16, 32, or 64-Bit Memory Structures to a 16-Bit Host and System Bus. Two 82353s Used In Parallel Interface to 32, 64, or 128-Bit Wide Memory Structures to a 32-Bit Host and System Bus
• Integrated Posted Write Latches on Both the Host and System Ports
• Integrated Swap Butters and Latches for Byte Assembly/Disassembly on the System Bus
• Selectable Parity Generation/Checking for Both Host and System Ports
• 164-Pin POFP Package