Integrated Device Tech IDT73720
The IDT73720/A Bus Exchanger is a high speed 16-bit bus exchange device intended for inter-bus communication in interleaved memory systems and high performance multiplexed address and data busses. The Bus Exchanger is responsible for interfacing between the CPU A/D bus (CPU address/data bus) and multiple memory data busses. The 73720/A uses a three bus architecture (X, Y, Z), with control signals suitable for simple transfer between the CPU bus (X) and either memory bus (Y or Z).- Min Voltage : 4.75V
- Max Voltage : 5.25V
- Max Operating Temp : 70°C
- Min Operating Temp : 0°C
Source:
Octopart
| Part No. | IDT73720 |
|---|---|
| Datasheet | IDT73720 Download |
| Manufacturer |  Integrated Device Tech |
| Description | 16-BIT TRI-PORT BUS EXCHANGER |
| Buy | Stock & Price |
FEATURES
:● High-speed 16-bit bus exchange for interbus communication in the following environments: — Multi-way interleaving memory — Multiplexed address and data busses
● Direct interface to R3051 family RISChipSet™ — R3051™ family of integrated RISController™ CPUs — R3721 DRAM controller
● Data path for read and write operations
● Low noise 12mA TTL level outputs
● Bidirectional 3-bus architecture: X, Y, Z — One CPU bus: X — Two (interleaved or banked) memory busses:Y & Z — Each bus can be independently latched
● Byte control on all three busses
● Source terminated outputs for low noise and undershoot control
● 68-pin PLCC and 80-pin PQFP package
● High-performance CMOS technology.
DESCRIPTION
: The Bus Exchanger features independent read and write latches for each memory bus, thus supporting a variety of memory strategies. All three ports support byte enable to independently enable upper and lower bytes. FUNCTIONAL BLOCK DIAGRAM OEYL 8 LEXY Y-WRITE LATCH 16 8 8 LEYX 8 8 OEXL X0:7 X8:15 OEXU 8 8 M U 16 X OEXU OEXL OEYU OEYL OEZU OEZL 16 Z-READ LATCH 16 8 Z-WRITE LATCH 16 8 OEZU NOTE: 1.
